./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 338b6951ab628b0237aa41c64d1786e44f90130a76a8fd0978f750b3fe39d026 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:22:02,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:22:02,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:22:02,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:22:02,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:22:02,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:22:02,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:22:02,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:22:02,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:22:02,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:22:02,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:22:02,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:22:02,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:22:02,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:22:02,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:22:02,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:22:02,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:22:02,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:22:02,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:22:02,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:22:02,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:22:02,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:22:02,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:22:02,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:22:02,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:22:02,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:22:02,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:22:02,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:22:02,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:22:02,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:22:02,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:22:02,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:22:02,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:22:02,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:22:02,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:22:02,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:22:02,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:22:02,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:22:02,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:22:02,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:22:02,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:22:02,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-11-25 18:22:02,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:22:02,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:22:02,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:22:02,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:22:02,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:22:02,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:22:02,446 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:22:02,446 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:22:02,446 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:22:02,447 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:22:02,448 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:22:02,448 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:22:02,449 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:22:02,449 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:22:02,449 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:22:02,449 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:22:02,450 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:22:02,450 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:22:02,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 18:22:02,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 18:22:02,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:22:02,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:22:02,452 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:22:02,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:22:02,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:22:02,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:22:02,454 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 18:22:02,455 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 18:22:02,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:22:02,455 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:22:02,456 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:22:02,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:22:02,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:22:02,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:22:02,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:22:02,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:22:02,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:22:02,457 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:22:02,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:22:02,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:22:02,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:22:02,458 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 338b6951ab628b0237aa41c64d1786e44f90130a76a8fd0978f750b3fe39d026 [2021-11-25 18:22:02,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:22:02,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:22:02,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:22:02,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:22:02,804 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:22:02,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/forester-heap/dll-queue-2.i [2021-11-25 18:22:02,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/data/77a09107a/d6556d61de9043ecb37937c5f0b90eda/FLAG6d74368ad [2021-11-25 18:22:03,438 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:22:03,439 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i [2021-11-25 18:22:03,455 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/data/77a09107a/d6556d61de9043ecb37937c5f0b90eda/FLAG6d74368ad [2021-11-25 18:22:03,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/data/77a09107a/d6556d61de9043ecb37937c5f0b90eda [2021-11-25 18:22:03,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:22:03,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:22:03,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:22:03,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:22:03,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:22:03,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:03" (1/1) ... [2021-11-25 18:22:03,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c33e7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:03, skipping insertion in model container [2021-11-25 18:22:03,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:03" (1/1) ... [2021-11-25 18:22:03,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:22:03,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:22:04,216 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22460,22473] [2021-11-25 18:22:04,221 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22531,22544] [2021-11-25 18:22:04,223 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22605,22618] [2021-11-25 18:22:04,226 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22697,22710] [2021-11-25 18:22:04,227 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22774,22787] [2021-11-25 18:22:04,228 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22869,22882] [2021-11-25 18:22:04,231 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22946,22959] [2021-11-25 18:22:04,232 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23029,23042] [2021-11-25 18:22:04,237 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23124,23137] [2021-11-25 18:22:04,238 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23201,23214] [2021-11-25 18:22:04,240 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23284,23297] [2021-11-25 18:22:04,242 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23373,23386] [2021-11-25 18:22:04,244 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23459,23472] [2021-11-25 18:22:04,248 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23604,23617] [2021-11-25 18:22:04,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:22:04,270 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:22:04,318 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22460,22473] [2021-11-25 18:22:04,325 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22531,22544] [2021-11-25 18:22:04,326 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22605,22618] [2021-11-25 18:22:04,327 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22697,22710] [2021-11-25 18:22:04,328 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22774,22787] [2021-11-25 18:22:04,329 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22869,22882] [2021-11-25 18:22:04,329 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22946,22959] [2021-11-25 18:22:04,337 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23029,23042] [2021-11-25 18:22:04,338 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23124,23137] [2021-11-25 18:22:04,338 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23201,23214] [2021-11-25 18:22:04,339 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23284,23297] [2021-11-25 18:22:04,339 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23373,23386] [2021-11-25 18:22:04,340 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23459,23472] [2021-11-25 18:22:04,341 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23604,23617] [2021-11-25 18:22:04,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:22:04,375 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:22:04,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04 WrapperNode [2021-11-25 18:22:04,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:22:04,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:22:04,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:22:04,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:22:04,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (1/1) ... [2021-11-25 18:22:04,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (1/1) ... [2021-11-25 18:22:04,432 INFO L137 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 226 [2021-11-25 18:22:04,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:22:04,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:22:04,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:22:04,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:22:04,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (1/1) ... [2021-11-25 18:22:04,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (1/1) ... [2021-11-25 18:22:04,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (1/1) ... [2021-11-25 18:22:04,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (1/1) ... [2021-11-25 18:22:04,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (1/1) ... [2021-11-25 18:22:04,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (1/1) ... [2021-11-25 18:22:04,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (1/1) ... [2021-11-25 18:22:04,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:22:04,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:22:04,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:22:04,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:22:04,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (1/1) ... [2021-11-25 18:22:04,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:22:04,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:04,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:22:04,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:22:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:22:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:22:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:22:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:22:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:22:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:22:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:22:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:22:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:22:04,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:22:04,670 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:22:04,672 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:22:05,253 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:22:05,335 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:22:05,336 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-25 18:22:05,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:05 BoogieIcfgContainer [2021-11-25 18:22:05,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:22:05,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:22:05,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:22:05,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:22:05,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:22:03" (1/3) ... [2021-11-25 18:22:05,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be8b2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:05, skipping insertion in model container [2021-11-25 18:22:05,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:04" (2/3) ... [2021-11-25 18:22:05,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be8b2b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:05, skipping insertion in model container [2021-11-25 18:22:05,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:05" (3/3) ... [2021-11-25 18:22:05,378 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2021-11-25 18:22:05,384 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:22:05,385 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-11-25 18:22:05,438 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:22:05,447 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:22:05,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-11-25 18:22:05,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 89 states have (on average 2.460674157303371) internal successors, (219), 165 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-25 18:22:05,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:05,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-25 18:22:05,478 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:05,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash 14667, now seen corresponding path program 1 times [2021-11-25 18:22:05,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:05,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357527247] [2021-11-25 18:22:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:05,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:05,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:05,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357527247] [2021-11-25 18:22:05,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357527247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:05,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:05,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:22:05,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941600997] [2021-11-25 18:22:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:05,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:05,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:05,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:05,710 INFO L87 Difference]: Start difference. First operand has 166 states, 89 states have (on average 2.460674157303371) internal successors, (219), 165 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:05,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:05,930 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2021-11-25 18:22:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2021-11-25 18:22:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:05,951 INFO L225 Difference]: With dead ends: 161 [2021-11-25 18:22:05,951 INFO L226 Difference]: Without dead ends: 159 [2021-11-25 18:22:05,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:05,959 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 154 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:05,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 93 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:22:05,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-25 18:22:06,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2021-11-25 18:22:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 91 states have (on average 1.835164835164835) internal successors, (167), 155 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2021-11-25 18:22:06,023 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 2 [2021-11-25 18:22:06,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:06,024 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2021-11-25 18:22:06,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:06,024 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2021-11-25 18:22:06,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-25 18:22:06,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:06,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-25 18:22:06,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:22:06,026 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:06,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:06,027 INFO L85 PathProgramCache]: Analyzing trace with hash 14668, now seen corresponding path program 1 times [2021-11-25 18:22:06,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:06,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637298787] [2021-11-25 18:22:06,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:06,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:06,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:06,128 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:06,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637298787] [2021-11-25 18:22:06,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637298787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:06,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:06,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:22:06,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560164087] [2021-11-25 18:22:06,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:06,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:06,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:06,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:06,133 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:06,294 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2021-11-25 18:22:06,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:06,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2021-11-25 18:22:06,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:06,297 INFO L225 Difference]: With dead ends: 147 [2021-11-25 18:22:06,297 INFO L226 Difference]: Without dead ends: 147 [2021-11-25 18:22:06,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:06,299 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 141 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:06,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 98 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:06,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-25 18:22:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2021-11-25 18:22:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 91 states have (on average 1.7032967032967032) internal successors, (155), 144 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:06,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2021-11-25 18:22:06,317 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 2 [2021-11-25 18:22:06,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:06,317 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2021-11-25 18:22:06,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2021-11-25 18:22:06,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:22:06,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:06,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:06,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:22:06,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1012821487, now seen corresponding path program 1 times [2021-11-25 18:22:06,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272455263] [2021-11-25 18:22:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:06,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:06,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:06,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272455263] [2021-11-25 18:22:06,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272455263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:06,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:06,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:06,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395531080] [2021-11-25 18:22:06,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:06,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:22:06,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:06,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:22:06,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:22:06,455 INFO L87 Difference]: Start difference. First operand 145 states and 155 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:06,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:06,593 INFO L93 Difference]: Finished difference Result 152 states and 161 transitions. [2021-11-25 18:22:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:06,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 18:22:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:06,595 INFO L225 Difference]: With dead ends: 152 [2021-11-25 18:22:06,595 INFO L226 Difference]: Without dead ends: 152 [2021-11-25 18:22:06,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:06,597 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 247 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:06,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 97 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-25 18:22:06,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 145. [2021-11-25 18:22:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 97 states have (on average 1.6391752577319587) internal successors, (159), 144 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2021-11-25 18:22:06,610 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 7 [2021-11-25 18:22:06,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:06,611 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2021-11-25 18:22:06,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2021-11-25 18:22:06,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:22:06,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:06,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:06,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:22:06,613 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:06,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:06,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1012821486, now seen corresponding path program 1 times [2021-11-25 18:22:06,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:06,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686355122] [2021-11-25 18:22:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:06,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:06,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:06,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686355122] [2021-11-25 18:22:06,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686355122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:06,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:06,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:22:06,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863451591] [2021-11-25 18:22:06,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:06,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:22:06,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:06,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:22:06,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:22:06,752 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:07,065 INFO L93 Difference]: Finished difference Result 235 states and 250 transitions. [2021-11-25 18:22:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:22:07,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 18:22:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:07,068 INFO L225 Difference]: With dead ends: 235 [2021-11-25 18:22:07,068 INFO L226 Difference]: Without dead ends: 235 [2021-11-25 18:22:07,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:22:07,070 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 310 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:07,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 202 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:22:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-25 18:22:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 151. [2021-11-25 18:22:07,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 103 states have (on average 1.6213592233009708) internal successors, (167), 150 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2021-11-25 18:22:07,083 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 7 [2021-11-25 18:22:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:07,084 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2021-11-25 18:22:07,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2021-11-25 18:22:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:22:07,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:07,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:07,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:22:07,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:07,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:07,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1332694170, now seen corresponding path program 1 times [2021-11-25 18:22:07,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:07,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951524929] [2021-11-25 18:22:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:07,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:07,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:07,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951524929] [2021-11-25 18:22:07,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951524929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:07,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:07,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:22:07,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83868389] [2021-11-25 18:22:07,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:07,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:07,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:07,136 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-11-25 18:22:07,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:07,189 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2021-11-25 18:22:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:07,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 [2021-11-25 18:22:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:07,191 INFO L225 Difference]: With dead ends: 141 [2021-11-25 18:22:07,191 INFO L226 Difference]: Without dead ends: 141 [2021-11-25 18:22:07,192 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:22:07,193 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 119 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:07,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 114 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:22:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-25 18:22:07,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-25 18:22:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 98 states have (on average 1.5918367346938775) internal successors, (156), 140 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 156 transitions. [2021-11-25 18:22:07,202 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 156 transitions. Word has length 8 [2021-11-25 18:22:07,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:07,203 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 156 transitions. [2021-11-25 18:22:07,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-11-25 18:22:07,203 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 156 transitions. [2021-11-25 18:22:07,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:22:07,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:07,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:07,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:22:07,205 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:07,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:07,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1636537440, now seen corresponding path program 1 times [2021-11-25 18:22:07,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:07,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243599001] [2021-11-25 18:22:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:07,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:07,353 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:07,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243599001] [2021-11-25 18:22:07,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243599001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:07,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:07,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:22:07,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803798998] [2021-11-25 18:22:07,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:07,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:07,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:07,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:07,356 INFO L87 Difference]: Start difference. First operand 141 states and 156 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:07,529 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2021-11-25 18:22:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:07,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-25 18:22:07,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:07,530 INFO L225 Difference]: With dead ends: 140 [2021-11-25 18:22:07,531 INFO L226 Difference]: Without dead ends: 140 [2021-11-25 18:22:07,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:22:07,532 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 5 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:07,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 357 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-25 18:22:07,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-25 18:22:07,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 98 states have (on average 1.5714285714285714) internal successors, (154), 139 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2021-11-25 18:22:07,539 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 9 [2021-11-25 18:22:07,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:07,539 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2021-11-25 18:22:07,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2021-11-25 18:22:07,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:22:07,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:07,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:07,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:22:07,541 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:07,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:07,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1636537439, now seen corresponding path program 1 times [2021-11-25 18:22:07,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:07,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401180144] [2021-11-25 18:22:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:07,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:07,635 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:07,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401180144] [2021-11-25 18:22:07,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401180144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:07,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:07,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:22:07,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713910669] [2021-11-25 18:22:07,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:07,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:07,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:07,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:07,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:07,638 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:07,795 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2021-11-25 18:22:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:07,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-25 18:22:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:07,797 INFO L225 Difference]: With dead ends: 139 [2021-11-25 18:22:07,797 INFO L226 Difference]: Without dead ends: 139 [2021-11-25 18:22:07,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:22:07,799 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 4 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:07,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 357 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:07,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-25 18:22:07,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-11-25 18:22:07,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 98 states have (on average 1.5510204081632653) internal successors, (152), 138 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2021-11-25 18:22:07,806 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 9 [2021-11-25 18:22:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:07,807 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2021-11-25 18:22:07,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2021-11-25 18:22:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:22:07,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:07,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:07,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:22:07,813 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:07,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash 754854527, now seen corresponding path program 1 times [2021-11-25 18:22:07,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:07,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797241255] [2021-11-25 18:22:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:07,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:07,978 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:07,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797241255] [2021-11-25 18:22:07,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797241255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:07,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:07,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:22:07,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081194408] [2021-11-25 18:22:07,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:07,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:22:07,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:07,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:22:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:22:07,981 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:08,240 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2021-11-25 18:22:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:22:08,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 18:22:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:08,242 INFO L225 Difference]: With dead ends: 142 [2021-11-25 18:22:08,242 INFO L226 Difference]: Without dead ends: 142 [2021-11-25 18:22:08,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:22:08,243 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 224 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:08,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 303 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:22:08,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-25 18:22:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2021-11-25 18:22:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 137 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2021-11-25 18:22:08,248 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 11 [2021-11-25 18:22:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:08,249 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2021-11-25 18:22:08,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2021-11-25 18:22:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:22:08,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:08,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:08,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:22:08,250 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:08,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash 754854528, now seen corresponding path program 1 times [2021-11-25 18:22:08,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:08,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126881803] [2021-11-25 18:22:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:08,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:08,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:08,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126881803] [2021-11-25 18:22:08,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126881803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:08,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:08,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:22:08,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290020718] [2021-11-25 18:22:08,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:08,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:22:08,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:08,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:22:08,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:22:08,469 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:08,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:08,989 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2021-11-25 18:22:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 18:22:08,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 18:22:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:08,991 INFO L225 Difference]: With dead ends: 203 [2021-11-25 18:22:08,991 INFO L226 Difference]: Without dead ends: 203 [2021-11-25 18:22:08,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:22:08,992 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 292 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:08,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 500 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:22:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-25 18:22:08,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 125. [2021-11-25 18:22:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 124 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2021-11-25 18:22:08,997 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 11 [2021-11-25 18:22:08,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:08,997 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2021-11-25 18:22:08,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2021-11-25 18:22:08,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 18:22:08,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:08,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:08,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:22:08,999 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:08,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash 42463835, now seen corresponding path program 1 times [2021-11-25 18:22:09,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:09,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275277418] [2021-11-25 18:22:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:09,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:09,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:09,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275277418] [2021-11-25 18:22:09,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275277418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:09,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:09,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:09,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282733861] [2021-11-25 18:22:09,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:09,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:09,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:09,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:09,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:09,056 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) 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) [2021-11-25 18:22:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:09,112 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2021-11-25 18:22:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:09,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) 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 [2021-11-25 18:22:09,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:09,115 INFO L225 Difference]: With dead ends: 173 [2021-11-25 18:22:09,115 INFO L226 Difference]: Without dead ends: 173 [2021-11-25 18:22:09,115 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:22:09,116 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 39 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:09,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 206 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:09,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-25 18:22:09,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2021-11-25 18:22:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 105 states have (on average 1.438095238095238) internal successors, (151), 137 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2021-11-25 18:22:09,128 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 14 [2021-11-25 18:22:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:09,128 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2021-11-25 18:22:09,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) 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) [2021-11-25 18:22:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2021-11-25 18:22:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:22:09,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:09,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:09,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:22:09,131 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:09,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2115560054, now seen corresponding path program 1 times [2021-11-25 18:22:09,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:09,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874136235] [2021-11-25 18:22:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:09,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:09,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:09,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874136235] [2021-11-25 18:22:09,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874136235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:09,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:09,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:22:09,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842775023] [2021-11-25 18:22:09,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:09,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:09,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:09,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:09,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:09,213 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:09,341 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2021-11-25 18:22:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:22:09,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 [2021-11-25 18:22:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:09,343 INFO L225 Difference]: With dead ends: 143 [2021-11-25 18:22:09,343 INFO L226 Difference]: Without dead ends: 143 [2021-11-25 18:22:09,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:22:09,344 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 5 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:09,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 396 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-25 18:22:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-11-25 18:22:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 108 states have (on average 1.4259259259259258) internal successors, (154), 140 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2021-11-25 18:22:09,350 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 17 [2021-11-25 18:22:09,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:09,350 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2021-11-25 18:22:09,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:09,350 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2021-11-25 18:22:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:22:09,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:09,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:09,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:22:09,352 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:09,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:09,353 INFO L85 PathProgramCache]: Analyzing trace with hash 658823248, now seen corresponding path program 1 times [2021-11-25 18:22:09,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:09,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570520578] [2021-11-25 18:22:09,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:09,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:09,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:09,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570520578] [2021-11-25 18:22:09,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570520578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:09,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:09,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:22:09,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336373963] [2021-11-25 18:22:09,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:09,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:22:09,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:09,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:22:09,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:22:09,467 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:09,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:09,777 INFO L93 Difference]: Finished difference Result 220 states and 237 transitions. [2021-11-25 18:22:09,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:22:09,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 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 [2021-11-25 18:22:09,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:09,779 INFO L225 Difference]: With dead ends: 220 [2021-11-25 18:22:09,779 INFO L226 Difference]: Without dead ends: 220 [2021-11-25 18:22:09,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:22:09,780 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 287 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:09,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 444 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:22:09,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-25 18:22:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 145. [2021-11-25 18:22:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 112 states have (on average 1.4107142857142858) internal successors, (158), 144 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 158 transitions. [2021-11-25 18:22:09,786 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 158 transitions. Word has length 17 [2021-11-25 18:22:09,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:09,786 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 158 transitions. [2021-11-25 18:22:09,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 158 transitions. [2021-11-25 18:22:09,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 18:22:09,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:09,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:09,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 18:22:09,790 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:09,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:09,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1158449302, now seen corresponding path program 1 times [2021-11-25 18:22:09,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:09,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065494570] [2021-11-25 18:22:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:09,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:09,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:09,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065494570] [2021-11-25 18:22:09,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065494570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:09,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:09,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:09,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475989714] [2021-11-25 18:22:09,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:09,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:09,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:09,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:09,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:09,880 INFO L87 Difference]: Start difference. First operand 145 states and 158 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:09,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:09,982 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2021-11-25 18:22:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:22:09,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 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 [2021-11-25 18:22:09,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:09,983 INFO L225 Difference]: With dead ends: 145 [2021-11-25 18:22:09,983 INFO L226 Difference]: Without dead ends: 145 [2021-11-25 18:22:09,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:09,984 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 117 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:09,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 261 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:22:09,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-25 18:22:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-25 18:22:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 144 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2021-11-25 18:22:09,988 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 18 [2021-11-25 18:22:09,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:09,989 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2021-11-25 18:22:09,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2021-11-25 18:22:09,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:22:09,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:09,990 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:09,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 18:22:09,991 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:09,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:09,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1300477052, now seen corresponding path program 1 times [2021-11-25 18:22:09,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:09,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005515340] [2021-11-25 18:22:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:09,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:10,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:10,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:10,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005515340] [2021-11-25 18:22:10,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005515340] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:22:10,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701353078] [2021-11-25 18:22:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:10,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:10,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:10,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:22:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:10,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 18:22:10,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:10,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:22:10,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:22:10,407 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:22:10,408 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:10,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:10,425 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:10,488 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:22:10,489 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:10,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:10,496 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:10,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:22:10,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:22:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:10,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:10,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701353078] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:10,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1998586326] [2021-11-25 18:22:10,856 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-25 18:22:10,856 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:22:10,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:22:10,867 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:22:10,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:22:10,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:10,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:10,940 INFO L388 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 [2021-11-25 18:22:10,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:10,983 INFO L388 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 30 treesize of output 21 [2021-11-25 18:22:10,994 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:11,002 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:11,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:11,029 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:11,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:11,043 INFO L388 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 34 treesize of output 21 [2021-11-25 18:22:11,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:11,055 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:11,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:11,099 INFO L388 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 28 treesize of output 30 [2021-11-25 18:22:11,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:11,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:11,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:11,122 INFO L388 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 36 treesize of output 23 [2021-11-25 18:22:11,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:11,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:11,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:11,139 INFO L388 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 36 treesize of output 23 [2021-11-25 18:22:11,817 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:22:13,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1998586326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:13,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:22:13,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 13 [2021-11-25 18:22:13,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104577284] [2021-11-25 18:22:13,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:13,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:22:13,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:22:13,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:22:13,475 INFO L87 Difference]: Start difference. First operand 145 states and 157 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:14,014 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2021-11-25 18:22:14,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:22:14,015 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-25 18:22:14,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:14,016 INFO L225 Difference]: With dead ends: 157 [2021-11-25 18:22:14,016 INFO L226 Difference]: Without dead ends: 157 [2021-11-25 18:22:14,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:22:14,017 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 22 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:14,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 249 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:22:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-25 18:22:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2021-11-25 18:22:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 118 states have (on average 1.3898305084745763) internal successors, (164), 150 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2021-11-25 18:22:14,022 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 21 [2021-11-25 18:22:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:14,022 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2021-11-25 18:22:14,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2021-11-25 18:22:14,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:22:14,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:14,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:14,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:14,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 18:22:14,224 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:14,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1300475953, now seen corresponding path program 1 times [2021-11-25 18:22:14,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:14,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497459572] [2021-11-25 18:22:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:14,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:14,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:14,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497459572] [2021-11-25 18:22:14,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497459572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:22:14,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838112378] [2021-11-25 18:22:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:14,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:14,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:14,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:14,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:22:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:14,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:22:14,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:14,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:22:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:14,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:14,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838112378] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:14,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1879914616] [2021-11-25 18:22:14,519 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-25 18:22:14,519 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:22:14,520 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:22:14,520 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:22:14,520 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:22:14,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,543 INFO L388 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 [2021-11-25 18:22:14,559 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:14,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,570 INFO L388 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 30 treesize of output 21 [2021-11-25 18:22:14,577 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:14,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,596 INFO L388 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 34 treesize of output 21 [2021-11-25 18:22:14,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,606 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:14,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,616 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:14,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,643 INFO L388 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 28 treesize of output 30 [2021-11-25 18:22:14,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,656 INFO L388 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 36 treesize of output 23 [2021-11-25 18:22:14,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:14,672 INFO L388 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 36 treesize of output 23 [2021-11-25 18:22:15,140 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:22:16,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1879914616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:16,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:22:16,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [3, 3, 3] total 14 [2021-11-25 18:22:16,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147159554] [2021-11-25 18:22:16,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:16,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:22:16,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:16,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:22:16,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:22:16,564 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:17,088 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2021-11-25 18:22:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:22:17,089 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-25 18:22:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:17,089 INFO L225 Difference]: With dead ends: 152 [2021-11-25 18:22:17,089 INFO L226 Difference]: Without dead ends: 137 [2021-11-25 18:22:17,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:22:17,091 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 22 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:17,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 294 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:22:17,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-25 18:22:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-25 18:22:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 136 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2021-11-25 18:22:17,107 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 21 [2021-11-25 18:22:17,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:17,108 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2021-11-25 18:22:17,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:17,108 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2021-11-25 18:22:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-25 18:22:17,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:17,108 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:17,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:17,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:17,334 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:17,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash -516802388, now seen corresponding path program 1 times [2021-11-25 18:22:17,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:17,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173643496] [2021-11-25 18:22:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:17,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:17,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:17,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:17,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173643496] [2021-11-25 18:22:17,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173643496] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:22:17,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873148883] [2021-11-25 18:22:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:17,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:17,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:17,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:17,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:22:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:17,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 18:22:17,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:17,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:22:17,725 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:22:17,726 INFO L388 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 11 treesize of output 11 [2021-11-25 18:22:17,772 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:17,859 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:22:17,859 INFO L388 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 [2021-11-25 18:22:17,921 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:22:17,922 INFO L388 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 30 treesize of output 28 [2021-11-25 18:22:17,957 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:22:17,957 INFO L388 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 [2021-11-25 18:22:18,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-25 18:22:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:18,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:18,137 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_494 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_494) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-11-25 18:22:18,152 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_494 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_494) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-11-25 18:22:18,167 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_494 (Array Int Int))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_492))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_494)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-11-25 18:22:18,175 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_494 (Array Int Int))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_492))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_494)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-11-25 18:22:18,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:22:18,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 30 [2021-11-25 18:22:18,193 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:22:18,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 128 [2021-11-25 18:22:18,204 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:22:18,204 INFO L388 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 112 treesize of output 111 [2021-11-25 18:22:18,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 98 [2021-11-25 18:22:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:18,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873148883] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:18,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [360743746] [2021-11-25 18:22:18,460 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-25 18:22:18,461 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:22:18,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:22:18,462 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:22:18,462 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:22:18,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,497 INFO L388 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 [2021-11-25 18:22:18,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,516 INFO L388 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 30 treesize of output 21 [2021-11-25 18:22:18,526 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:18,533 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:18,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,554 INFO L388 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 34 treesize of output 21 [2021-11-25 18:22:18,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,564 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:18,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,576 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:18,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,624 INFO L388 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 36 treesize of output 23 [2021-11-25 18:22:18,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,633 INFO L388 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 28 treesize of output 30 [2021-11-25 18:22:18,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,647 INFO L388 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 36 treesize of output 23 [2021-11-25 18:22:18,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,692 INFO L388 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 29 treesize of output 35 [2021-11-25 18:22:18,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,730 INFO L388 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 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-25 18:22:18,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,742 INFO L388 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 28 treesize of output 23 [2021-11-25 18:22:18,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:22:18,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:18,827 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-25 18:22:18,827 INFO L388 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 1 case distinctions, treesize of input 172 treesize of output 125 [2021-11-25 18:22:18,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,845 INFO L388 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 94 [2021-11-25 18:22:18,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,859 INFO L388 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 0 case distinctions, treesize of input 63 treesize of output 33 [2021-11-25 18:22:18,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,927 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-25 18:22:18,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2021-11-25 18:22:18,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:18,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:18,957 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:22:18,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 107 [2021-11-25 18:22:18,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:18,986 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:22:18,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 76 [2021-11-25 18:22:19,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:19,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:19,047 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 18:22:19,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 150 treesize of output 110 [2021-11-25 18:22:19,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,075 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-25 18:22:19,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 67 [2021-11-25 18:22:19,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,108 INFO L388 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 0 case distinctions, treesize of input 47 treesize of output 52 [2021-11-25 18:22:19,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2021-11-25 18:22:19,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-25 18:22:19,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,304 INFO L388 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 0 case distinctions, treesize of input 58 treesize of output 55 [2021-11-25 18:22:19,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,319 INFO L388 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 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-25 18:22:19,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:19,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:19,400 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-11-25 18:22:19,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 192 treesize of output 151 [2021-11-25 18:22:19,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 114 [2021-11-25 18:22:19,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 55 [2021-11-25 18:22:19,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:19,583 INFO L354 Elim1Store]: treesize reduction 192, result has 16.5 percent of original size [2021-11-25 18:22:19,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 320 treesize of output 200 [2021-11-25 18:22:19,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,619 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 18:22:19,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 96 [2021-11-25 18:22:19,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:22:19,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,702 INFO L354 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2021-11-25 18:22:19,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 56 [2021-11-25 18:22:19,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:19,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:19,735 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 18:22:19,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 150 treesize of output 110 [2021-11-25 18:22:19,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:19,762 INFO L354 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2021-11-25 18:22:19,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 79 [2021-11-25 18:22:19,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:22:19,919 INFO L388 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 [2021-11-25 18:22:19,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:22:19,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:22:19,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:22:20,028 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-25 18:22:20,028 INFO L388 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 157 treesize of output 135 [2021-11-25 18:22:20,047 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:22:20,049 INFO L388 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 99 treesize of output 69 [2021-11-25 18:22:20,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2021-11-25 18:22:20,490 INFO L354 Elim1Store]: treesize reduction 80, result has 38.5 percent of original size [2021-11-25 18:22:20,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 203 treesize of output 203 [2021-11-25 18:22:20,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:20,554 INFO L354 Elim1Store]: treesize reduction 64, result has 32.6 percent of original size [2021-11-25 18:22:20,555 INFO L388 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 203 treesize of output 191 [2021-11-25 18:22:20,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:22:20,759 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:22:22,691 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5320#(and (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (<= 0 |ULTIMATE.start_main_~item~0#1.offset|) (<= (+ |ULTIMATE.start_main_~head~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~head~0#1.base|)) (= |ULTIMATE.start_main_~status~0#1| 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~head~0#1.base|) 1) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) 0) (= |#NULL.base| 0))' at error location [2021-11-25 18:22:22,691 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:22:22,691 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:22:22,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 25 [2021-11-25 18:22:22,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834089300] [2021-11-25 18:22:22,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:22:22,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-25 18:22:22,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:22,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-25 18:22:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1251, Unknown=4, NotChecked=300, Total=1722 [2021-11-25 18:22:22,694 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 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) [2021-11-25 18:22:23,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:23,690 INFO L93 Difference]: Finished difference Result 266 states and 293 transitions. [2021-11-25 18:22:23,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 18:22:23,693 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 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) Word has length 27 [2021-11-25 18:22:23,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:23,695 INFO L225 Difference]: With dead ends: 266 [2021-11-25 18:22:23,695 INFO L226 Difference]: Without dead ends: 266 [2021-11-25 18:22:23,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 4 IntricatePredicates, 2 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=320, Invalid=2142, Unknown=4, NotChecked=396, Total=2862 [2021-11-25 18:22:23,697 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 602 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1069 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:23,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 1066 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 855 Invalid, 0 Unknown, 1069 Unchecked, 0.5s Time] [2021-11-25 18:22:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-25 18:22:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 147. [2021-11-25 18:22:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 114 states have (on average 1.4035087719298245) internal successors, (160), 146 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 160 transitions. [2021-11-25 18:22:23,704 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 160 transitions. Word has length 27 [2021-11-25 18:22:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:23,704 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 160 transitions. [2021-11-25 18:22:23,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 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) [2021-11-25 18:22:23,705 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 160 transitions. [2021-11-25 18:22:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 18:22:23,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:23,707 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:23,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:23,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 18:22:23,907 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:23,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:23,908 INFO L85 PathProgramCache]: Analyzing trace with hash -984090019, now seen corresponding path program 1 times [2021-11-25 18:22:23,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:23,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100692969] [2021-11-25 18:22:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:23,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:23,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:23,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100692969] [2021-11-25 18:22:23,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100692969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:23,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:23,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:22:23,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963241866] [2021-11-25 18:22:23,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:23,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:22:23,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:22:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:22:23,980 INFO L87 Difference]: Start difference. First operand 147 states and 160 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:24,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:24,030 INFO L93 Difference]: Finished difference Result 202 states and 219 transitions. [2021-11-25 18:22:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:22:24,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-25 18:22:24,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:24,032 INFO L225 Difference]: With dead ends: 202 [2021-11-25 18:22:24,033 INFO L226 Difference]: Without dead ends: 202 [2021-11-25 18:22:24,033 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:22:24,034 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 49 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:24,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 204 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:22:24,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-25 18:22:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 165. [2021-11-25 18:22:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 132 states have (on average 1.356060606060606) internal successors, (179), 164 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:24,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2021-11-25 18:22:24,043 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 28 [2021-11-25 18:22:24,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:24,043 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2021-11-25 18:22:24,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:24,043 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2021-11-25 18:22:24,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 18:22:24,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:24,047 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:24,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 18:22:24,047 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:24,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:24,048 INFO L85 PathProgramCache]: Analyzing trace with hash -711321867, now seen corresponding path program 1 times [2021-11-25 18:22:24,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:24,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266448321] [2021-11-25 18:22:24,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:24,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:24,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:24,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266448321] [2021-11-25 18:22:24,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266448321] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:22:24,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779922606] [2021-11-25 18:22:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:24,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:24,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:24,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:24,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:22:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:24,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 18:22:24,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:24,634 INFO L388 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 14 [2021-11-25 18:22:24,664 INFO L388 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 14 [2021-11-25 18:22:24,727 INFO L388 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 14 [2021-11-25 18:22:24,757 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:22:24,758 INFO L388 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 11 treesize of output 11 [2021-11-25 18:22:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:24,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:24,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779922606] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:24,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1725481618] [2021-11-25 18:22:24,998 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-25 18:22:25,002 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:22:25,002 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:22:25,002 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:22:25,003 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:22:25,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,027 INFO L388 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 [2021-11-25 18:22:25,042 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:25,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,051 INFO L388 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 30 treesize of output 21 [2021-11-25 18:22:25,058 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:25,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,076 INFO L388 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 34 treesize of output 21 [2021-11-25 18:22:25,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,086 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:25,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,097 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:25,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,120 INFO L388 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 36 treesize of output 23 [2021-11-25 18:22:25,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,128 INFO L388 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 28 treesize of output 30 [2021-11-25 18:22:25,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,142 INFO L388 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 36 treesize of output 23 [2021-11-25 18:22:25,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,176 INFO L388 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 29 treesize of output 35 [2021-11-25 18:22:25,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,207 INFO L388 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 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-25 18:22:25,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:22:25,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,233 INFO L388 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 28 treesize of output 23 [2021-11-25 18:22:25,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:25,293 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-25 18:22:25,293 INFO L388 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 1 case distinctions, treesize of input 172 treesize of output 125 [2021-11-25 18:22:25,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,308 INFO L388 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 0 case distinctions, treesize of input 63 treesize of output 33 [2021-11-25 18:22:25,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,320 INFO L388 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 63 [2021-11-25 18:22:25,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:25,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:25,380 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:22:25,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 107 [2021-11-25 18:22:25,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,401 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 18:22:25,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 64 [2021-11-25 18:22:25,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,425 INFO L388 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 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:22:25,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,465 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:22:25,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,485 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:22:25,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,498 INFO L388 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 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-25 18:22:25,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2021-11-25 18:22:25,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,634 INFO L388 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 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-25 18:22:25,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,650 INFO L388 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 0 case distinctions, treesize of input 48 treesize of output 45 [2021-11-25 18:22:25,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-25 18:22:25,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:25,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:25,738 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-11-25 18:22:25,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 192 treesize of output 151 [2021-11-25 18:22:25,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 114 [2021-11-25 18:22:25,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 45 [2021-11-25 18:22:25,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:25,890 INFO L354 Elim1Store]: treesize reduction 192, result has 16.5 percent of original size [2021-11-25 18:22:25,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 320 treesize of output 200 [2021-11-25 18:22:25,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:22:25,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:25,969 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-11-25 18:22:25,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 120 [2021-11-25 18:22:26,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,069 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-25 18:22:26,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 300 treesize of output 181 [2021-11-25 18:22:26,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 81 [2021-11-25 18:22:26,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2021-11-25 18:22:26,494 INFO L354 Elim1Store]: treesize reduction 292, result has 12.8 percent of original size [2021-11-25 18:22:26,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 622 treesize of output 617 [2021-11-25 18:22:26,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,836 INFO L354 Elim1Store]: treesize reduction 92, result has 22.7 percent of original size [2021-11-25 18:22:26,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 700 treesize of output 562 [2021-11-25 18:22:26,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,899 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-11-25 18:22:26,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 616 treesize of output 596 [2021-11-25 18:22:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:26,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:26,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,000 INFO L354 Elim1Store]: treesize reduction 136, result has 12.3 percent of original size [2021-11-25 18:22:27,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 612 treesize of output 608 [2021-11-25 18:22:27,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,309 INFO L354 Elim1Store]: treesize reduction 100, result has 20.6 percent of original size [2021-11-25 18:22:27,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 709 treesize of output 591 [2021-11-25 18:22:27,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,353 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-25 18:22:27,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 9 case distinctions, treesize of input 613 treesize of output 569 [2021-11-25 18:22:27,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,490 INFO L354 Elim1Store]: treesize reduction 292, result has 15.9 percent of original size [2021-11-25 18:22:27,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 25 case distinctions, treesize of input 638 treesize of output 625 [2021-11-25 18:22:27,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:27,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:27,990 INFO L354 Elim1Store]: treesize reduction 348, result has 17.9 percent of original size [2021-11-25 18:22:27,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 28 case distinctions, treesize of input 1266 treesize of output 717 [2021-11-25 18:22:28,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:28,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:28,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:28,210 INFO L354 Elim1Store]: treesize reduction 516, result has 18.4 percent of original size [2021-11-25 18:22:28,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 1184 treesize of output 994 [2021-11-25 18:22:28,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:28,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:28,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:28,336 INFO L354 Elim1Store]: treesize reduction 350, result has 14.6 percent of original size [2021-11-25 18:22:28,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 962 treesize of output 940 [2021-11-25 18:22:41,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:41,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:41,467 INFO L354 Elim1Store]: treesize reduction 270, result has 3.9 percent of original size [2021-11-25 18:22:41,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 1754 treesize of output 1076 [2021-11-25 18:22:41,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:41,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:41,584 INFO L354 Elim1Store]: treesize reduction 438, result has 4.2 percent of original size [2021-11-25 18:22:41,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 1730 treesize of output 1466 [2021-11-25 18:22:41,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:41,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:41,650 INFO L354 Elim1Store]: treesize reduction 86, result has 19.6 percent of original size [2021-11-25 18:22:41,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 case distinctions, treesize of input 1701 treesize of output 1643 [2021-11-25 18:22:41,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:22:41,818 INFO L388 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 [2021-11-25 18:22:41,836 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:41,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:22:41,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:22:41,904 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-25 18:22:41,904 INFO L388 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 138 treesize of output 96 [2021-11-25 18:22:41,933 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-25 18:22:41,933 INFO L388 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 1 case distinctions, treesize of input 104 treesize of output 94 [2021-11-25 18:22:41,943 INFO L388 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 27 treesize of output 1 [2021-11-25 18:22:42,237 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-25 18:22:42,237 INFO L388 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 82 [2021-11-25 18:22:42,273 INFO L354 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2021-11-25 18:22:42,273 INFO L388 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 134 treesize of output 115 [2021-11-25 18:22:42,432 INFO L388 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 15 treesize of output 1 [2021-11-25 18:22:42,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:42,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:42,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:42,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:42,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:42,499 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:22:42,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 68 [2021-11-25 18:22:42,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:42,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:42,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:42,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:42,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:42,512 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:22:42,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 110 treesize of output 100 [2021-11-25 18:22:42,533 INFO L388 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 [2021-11-25 18:22:42,596 INFO L388 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 [2021-11-25 18:22:42,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:22:42,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:22:42,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:22:42,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:22:42,656 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-11-25 18:22:42,657 INFO L388 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 114 treesize of output 84 [2021-11-25 18:22:42,678 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-11-25 18:22:42,678 INFO L388 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 104 treesize of output 94 [2021-11-25 18:22:42,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2021-11-25 18:22:42,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:22:42,797 INFO L354 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2021-11-25 18:22:42,798 INFO L388 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 59 [2021-11-25 18:22:42,840 INFO L354 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2021-11-25 18:22:42,841 INFO L388 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 75 [2021-11-25 18:22:42,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:22:42,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:22:42,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-25 18:22:42,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:22:42,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:42,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:43,024 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-11-25 18:22:43,025 INFO L388 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 4 case distinctions, treesize of input 159 treesize of output 142 [2021-11-25 18:22:43,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:43,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:43,061 INFO L354 Elim1Store]: treesize reduction 73, result has 25.5 percent of original size [2021-11-25 18:22:43,061 INFO L388 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 4 case distinctions, treesize of input 180 treesize of output 155 [2021-11-25 18:22:43,152 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:22:44,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6349#(and (<= |ULTIMATE.start_main_~status~0#1| 2) (<= 0 |#NULL.base|) (= |ULTIMATE.start_main_~item~0#1.offset| 0) (= |ULTIMATE.start_main_~item~0#1.base| 0) (<= 1 |ULTIMATE.start_main_~status~0#1|) (<= |#NULL.offset| 0) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~head~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~head~0#1.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 18:22:44,523 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:22:44,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:22:44,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 22 [2021-11-25 18:22:44,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105206428] [2021-11-25 18:22:44,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:22:44,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 18:22:44,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:44,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 18:22:44,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1445, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 18:22:44,525 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 22 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) [2021-11-25 18:22:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:45,492 INFO L93 Difference]: Finished difference Result 210 states and 223 transitions. [2021-11-25 18:22:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 18:22:45,492 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 22 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) Word has length 31 [2021-11-25 18:22:45,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:45,494 INFO L225 Difference]: With dead ends: 210 [2021-11-25 18:22:45,494 INFO L226 Difference]: Without dead ends: 210 [2021-11-25 18:22:45,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=542, Invalid=2880, Unknown=0, NotChecked=0, Total=3422 [2021-11-25 18:22:45,496 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 1026 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:45,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 478 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:22:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-25 18:22:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 163. [2021-11-25 18:22:45,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 131 states have (on average 1.3435114503816794) internal successors, (176), 162 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:22:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 176 transitions. [2021-11-25 18:22:45,508 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 176 transitions. Word has length 31 [2021-11-25 18:22:45,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:45,508 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 176 transitions. [2021-11-25 18:22:45,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.652173913043478) internal successors, (84), 22 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) [2021-11-25 18:22:45,508 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 176 transitions. [2021-11-25 18:22:45,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 18:22:45,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:45,510 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:45,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:22:45,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 18:22:45,725 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:22:45,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:45,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1407486429, now seen corresponding path program 1 times [2021-11-25 18:22:45,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:45,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022617238] [2021-11-25 18:22:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:45,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:45,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:45,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022617238] [2021-11-25 18:22:45,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022617238] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:22:45,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851398302] [2021-11-25 18:22:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:45,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:22:45,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:22:45,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:22:45,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:22:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:46,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-25 18:22:46,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:22:46,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:22:46,123 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 18:22:46,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:22:46,160 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:46,256 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:22:46,257 INFO L388 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 [2021-11-25 18:22:46,317 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:22:46,318 INFO L388 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 31 treesize of output 29 [2021-11-25 18:22:46,354 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:22:46,355 INFO L388 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 [2021-11-25 18:22:46,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:22:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:46,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:22:46,646 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_786 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_786) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1)) is different from false [2021-11-25 18:22:46,706 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_784 (Array Int Int)) (v_ArrVal_786 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_784))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_786)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1)) is different from false [2021-11-25 18:22:46,714 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_784 (Array Int Int)) (v_ArrVal_786 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_784))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_786)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1)) is different from false [2021-11-25 18:22:46,725 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:22:46,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2021-11-25 18:22:46,734 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:22:46,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 131 [2021-11-25 18:22:46,745 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:22:46,746 INFO L388 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 116 treesize of output 114 [2021-11-25 18:22:46,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 102 [2021-11-25 18:22:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:22:56,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851398302] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:22:56,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1532633934] [2021-11-25 18:22:56,622 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-11-25 18:22:56,623 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:22:56,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:22:56,623 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:22:56,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:22:56,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,654 INFO L388 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 [2021-11-25 18:22:56,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,669 INFO L388 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 30 treesize of output 21 [2021-11-25 18:22:56,677 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:56,682 INFO L388 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 11 treesize of output 7 [2021-11-25 18:22:56,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,699 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:56,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,710 INFO L388 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 34 treesize of output 21 [2021-11-25 18:22:56,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,720 INFO L388 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 21 treesize of output 20 [2021-11-25 18:22:56,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,742 INFO L388 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 28 treesize of output 30 [2021-11-25 18:22:56,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,754 INFO L388 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 36 treesize of output 23 [2021-11-25 18:22:56,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,766 INFO L388 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 36 treesize of output 23 [2021-11-25 18:22:56,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,801 INFO L388 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 29 treesize of output 35 [2021-11-25 18:22:56,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:22:56,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,841 INFO L388 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 28 treesize of output 23 [2021-11-25 18:22:56,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,852 INFO L388 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 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-25 18:22:56,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:56,890 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-25 18:22:56,890 INFO L388 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 1 case distinctions, treesize of input 172 treesize of output 125 [2021-11-25 18:22:56,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,901 INFO L388 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 94 [2021-11-25 18:22:56,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,913 INFO L388 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 0 case distinctions, treesize of input 51 treesize of output 33 [2021-11-25 18:22:56,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:56,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:56,977 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:22:56,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 84 [2021-11-25 18:22:56,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:56,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-25 18:22:57,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,034 INFO L388 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 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:22:57,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,059 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:22:57,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,070 INFO L388 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 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-25 18:22:57,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,091 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:22:57,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2021-11-25 18:22:57,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,209 INFO L388 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 0 case distinctions, treesize of input 48 treesize of output 45 [2021-11-25 18:22:57,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,221 INFO L388 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 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-25 18:22:57,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-25 18:22:57,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:57,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:57,296 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-11-25 18:22:57,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 192 treesize of output 151 [2021-11-25 18:22:57,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 114 [2021-11-25 18:22:57,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 45 [2021-11-25 18:22:57,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:57,441 INFO L354 Elim1Store]: treesize reduction 192, result has 16.5 percent of original size [2021-11-25 18:22:57,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 320 treesize of output 200 [2021-11-25 18:22:57,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:22:57,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,487 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 18:22:57,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 88 [2021-11-25 18:22:57,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,532 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:22:57,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,545 INFO L388 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 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-25 18:22:57,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,556 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:22:57,796 INFO L354 Elim1Store]: treesize reduction 96, result has 17.9 percent of original size [2021-11-25 18:22:57,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 351 treesize of output 350 [2021-11-25 18:22:57,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:22:57,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:22:57,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:22:57,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,893 INFO L388 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 114 treesize of output 84 [2021-11-25 18:22:57,905 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-25 18:22:57,906 INFO L388 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 104 treesize of output 82 [2021-11-25 18:22:57,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2021-11-25 18:22:57,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:22:57,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:22:57,953 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 18:22:57,953 INFO L388 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 77 treesize of output 70 [2021-11-25 18:22:57,974 INFO L354 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2021-11-25 18:22:57,974 INFO L388 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 52 [2021-11-25 18:22:57,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:22:57,984 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:23:00,371 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7008#(and (= |ULTIMATE.start_main_~item~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (not (= (select |#valid| |ULTIMATE.start_main_~item~0#1.base|) 1)) (<= (+ |ULTIMATE.start_main_~head~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~head~0#1.base|)) (= |ULTIMATE.start_main_~status~0#1| 1) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (= (select |#valid| |ULTIMATE.start_main_~head~0#1.base|) 1) (= |#NULL.offset| 0) (not |ULTIMATE.start_main_#t~short24#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~item~0#1.offset|) (or (not (= |ULTIMATE.start_main_~item~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~item~0#1.base| 0))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:23:00,372 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:23:00,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:23:00,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 27 [2021-11-25 18:23:00,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134974152] [2021-11-25 18:23:00,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:23:00,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-25 18:23:00,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-25 18:23:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1843, Unknown=9, NotChecked=276, Total=2450 [2021-11-25 18:23:00,374 INFO L87 Difference]: Start difference. First operand 163 states and 176 transitions. Second operand has 28 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 28 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:00,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:00,832 INFO L93 Difference]: Finished difference Result 192 states and 208 transitions. [2021-11-25 18:23:00,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 18:23:00,833 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 28 states have internal predecessors, (104), 0 states have call successors, (0), 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 35 [2021-11-25 18:23:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:00,834 INFO L225 Difference]: With dead ends: 192 [2021-11-25 18:23:00,834 INFO L226 Difference]: Without dead ends: 192 [2021-11-25 18:23:00,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 66 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=384, Invalid=2169, Unknown=9, NotChecked=300, Total=2862 [2021-11-25 18:23:00,836 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 381 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 692 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:00,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 578 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 404 Invalid, 0 Unknown, 692 Unchecked, 0.3s Time] [2021-11-25 18:23:00,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-25 18:23:00,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 172. [2021-11-25 18:23:00,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 140 states have (on average 1.3428571428571427) internal successors, (188), 171 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 188 transitions. [2021-11-25 18:23:00,841 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 188 transitions. Word has length 35 [2021-11-25 18:23:00,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:00,841 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 188 transitions. [2021-11-25 18:23:00,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 28 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:00,842 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 188 transitions. [2021-11-25 18:23:00,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 18:23:00,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:00,843 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:00,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:01,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:01,043 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:01,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1407486430, now seen corresponding path program 1 times [2021-11-25 18:23:01,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:01,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305140417] [2021-11-25 18:23:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:01,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:01,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:01,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305140417] [2021-11-25 18:23:01,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305140417] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:01,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899402126] [2021-11-25 18:23:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:01,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:01,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:01,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:23:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:01,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-25 18:23:01,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:01,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:01,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:01,483 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:23:01,484 INFO L388 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 11 treesize of output 11 [2021-11-25 18:23:01,518 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:01,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:01,606 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:01,606 INFO L388 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 38 treesize of output 37 [2021-11-25 18:23:01,609 INFO L388 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 [2021-11-25 18:23:01,692 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:23:01,692 INFO L388 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 [2021-11-25 18:23:01,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:23:01,713 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:01,714 INFO L388 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 31 treesize of output 29 [2021-11-25 18:23:01,772 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:01,772 INFO L388 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 38 treesize of output 37 [2021-11-25 18:23:01,775 INFO L388 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 [2021-11-25 18:23:01,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:23:01,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2021-11-25 18:23:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:01,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:02,116 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_889 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_889) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 8))) (forall ((v_ArrVal_889 (Array Int Int)) (v_ArrVal_890 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_889) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_890) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-25 18:23:02,137 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_889 (Array Int Int)) (v_ArrVal_890 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (<= (+ 12 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_889) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_890) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (forall ((v_ArrVal_889 (Array Int Int))) (<= 0 (+ 8 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_889) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-25 18:23:02,155 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_886 (Array Int Int)) (v_ArrVal_889 (Array Int Int)) (v_ArrVal_890 (Array Int Int)) (v_ArrVal_885 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_885))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_886) .cse0 v_ArrVal_889) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 12) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_890) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (forall ((v_ArrVal_886 (Array Int Int)) (v_ArrVal_889 (Array Int Int)) (v_ArrVal_885 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_886) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_885) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_889) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 8)))) is different from false [2021-11-25 18:23:02,172 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_886 (Array Int Int)) (v_ArrVal_889 (Array Int Int)) (v_ArrVal_890 (Array Int Int)) (v_ArrVal_885 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_885))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (<= (+ 12 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_886) .cse1 v_ArrVal_889) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_890) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) (forall ((v_ArrVal_886 (Array Int Int)) (v_ArrVal_889 (Array Int Int)) (v_ArrVal_885 (Array Int Int))) (<= 0 (+ 8 (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_886) (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_885) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_889)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-25 18:23:02,184 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:02,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2021-11-25 18:23:02,190 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:02,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2021-11-25 18:23:02,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2021-11-25 18:23:02,203 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:02,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 111 [2021-11-25 18:23:02,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 60 [2021-11-25 18:23:02,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2021-11-25 18:23:02,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 80 [2021-11-25 18:23:02,319 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:02,319 INFO L388 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 73 treesize of output 74 [2021-11-25 18:23:02,326 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:02,326 INFO L388 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 65 treesize of output 50 [2021-11-25 18:23:02,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:02,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:02,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 50 [2021-11-25 18:23:02,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:02,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-11-25 18:23:02,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-25 18:23:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:02,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899402126] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1816419255] [2021-11-25 18:23:02,477 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-11-25 18:23:02,477 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:02,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:02,478 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:02,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:02,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,508 INFO L388 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 [2021-11-25 18:23:02,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,538 INFO L388 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 30 treesize of output 21 [2021-11-25 18:23:02,544 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:02,552 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:02,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,568 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:02,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,584 INFO L388 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 34 treesize of output 21 [2021-11-25 18:23:02,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,595 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:02,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,616 INFO L388 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 36 treesize of output 23 [2021-11-25 18:23:02,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,625 INFO L388 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 28 treesize of output 30 [2021-11-25 18:23:02,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,636 INFO L388 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 36 treesize of output 23 [2021-11-25 18:23:02,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,674 INFO L388 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 29 treesize of output 35 [2021-11-25 18:23:02,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,702 INFO L388 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 28 treesize of output 23 [2021-11-25 18:23:02,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,714 INFO L388 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 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-25 18:23:02,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:23:02,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:02,772 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-25 18:23:02,773 INFO L388 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 1 case distinctions, treesize of input 172 treesize of output 125 [2021-11-25 18:23:02,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,786 INFO L388 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 94 [2021-11-25 18:23:02,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,799 INFO L388 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 0 case distinctions, treesize of input 51 treesize of output 33 [2021-11-25 18:23:02,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:02,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:02,849 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:23:02,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 84 [2021-11-25 18:23:02,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-25 18:23:02,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:23:02,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:02,908 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 18:23:02,908 INFO L388 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 87 [2021-11-25 18:23:02,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,918 INFO L388 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 0 case distinctions, treesize of input 54 treesize of output 47 [2021-11-25 18:23:02,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-25 18:23:02,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:02,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 52 [2021-11-25 18:23:03,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:03,074 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-25 18:23:03,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 165 treesize of output 125 [2021-11-25 18:23:03,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-25 18:23:03,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,110 INFO L388 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 0 case distinctions, treesize of input 48 treesize of output 45 [2021-11-25 18:23:03,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:03,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:03,189 INFO L354 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2021-11-25 18:23:03,190 INFO L388 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 6 new quantified variables, introduced 5 case distinctions, treesize of input 292 treesize of output 210 [2021-11-25 18:23:03,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 114 [2021-11-25 18:23:03,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 45 [2021-11-25 18:23:03,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:03,347 INFO L354 Elim1Store]: treesize reduction 158, result has 19.4 percent of original size [2021-11-25 18:23:03,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 277 treesize of output 174 [2021-11-25 18:23:03,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:23:03,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 71 [2021-11-25 18:23:03,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:03,449 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 18:23:03,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 123 treesize of output 87 [2021-11-25 18:23:03,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,461 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:23:03,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,473 INFO L388 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 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-25 18:23:03,736 INFO L354 Elim1Store]: treesize reduction 96, result has 17.9 percent of original size [2021-11-25 18:23:03,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 351 treesize of output 350 [2021-11-25 18:23:03,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:23:03,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:03,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:03,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,861 INFO L388 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 114 treesize of output 84 [2021-11-25 18:23:03,875 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-25 18:23:03,875 INFO L388 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 104 treesize of output 82 [2021-11-25 18:23:03,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2021-11-25 18:23:03,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:23:03,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:03,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:03,930 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 18:23:03,931 INFO L388 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 77 treesize of output 70 [2021-11-25 18:23:03,954 INFO L354 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2021-11-25 18:23:03,954 INFO L388 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 52 [2021-11-25 18:23:03,960 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:23:06,528 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7639#(and (= |ULTIMATE.start_main_~item~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (<= (+ |ULTIMATE.start_main_~head~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~head~0#1.base|)) (= |ULTIMATE.start_main_~status~0#1| 1) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (or (< (+ 8 |ULTIMATE.start_main_~item~0#1.offset|) 0) (< (select |#length| |ULTIMATE.start_main_~item~0#1.base|) (+ 12 |ULTIMATE.start_main_~item~0#1.offset|))) (= (select |#valid| |ULTIMATE.start_main_~head~0#1.base|) 1) (= |#NULL.offset| 0) (not |ULTIMATE.start_main_#t~short24#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~item~0#1.offset|) (or (not (= |ULTIMATE.start_main_~item~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~item~0#1.base| 0))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:23:06,528 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:23:06,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:23:06,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 28 [2021-11-25 18:23:06,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068328314] [2021-11-25 18:23:06,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:23:06,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-25 18:23:06,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-25 18:23:06,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1924, Unknown=4, NotChecked=372, Total=2550 [2021-11-25 18:23:06,531 INFO L87 Difference]: Start difference. First operand 172 states and 188 transitions. Second operand has 29 states, 28 states have (on average 3.75) internal successors, (105), 29 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:07,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:07,950 INFO L93 Difference]: Finished difference Result 285 states and 304 transitions. [2021-11-25 18:23:07,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 18:23:07,950 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.75) internal successors, (105), 29 states have internal predecessors, (105), 0 states have call successors, (0), 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 35 [2021-11-25 18:23:07,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:07,952 INFO L225 Difference]: With dead ends: 285 [2021-11-25 18:23:07,952 INFO L226 Difference]: Without dead ends: 285 [2021-11-25 18:23:07,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=489, Invalid=3305, Unknown=4, NotChecked=492, Total=4290 [2021-11-25 18:23:07,954 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 589 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 657 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:07,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 694 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 799 Invalid, 0 Unknown, 657 Unchecked, 0.6s Time] [2021-11-25 18:23:07,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-25 18:23:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 175. [2021-11-25 18:23:07,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 143 states have (on average 1.3356643356643356) internal successors, (191), 174 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:07,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 191 transitions. [2021-11-25 18:23:07,960 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 191 transitions. Word has length 35 [2021-11-25 18:23:07,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:07,960 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 191 transitions. [2021-11-25 18:23:07,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.75) internal successors, (105), 29 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:07,961 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 191 transitions. [2021-11-25 18:23:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-25 18:23:07,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:07,961 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:07,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:08,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:08,162 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:08,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash 682404996, now seen corresponding path program 1 times [2021-11-25 18:23:08,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:08,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082218913] [2021-11-25 18:23:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:08,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:23:08,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:08,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082218913] [2021-11-25 18:23:08,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082218913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:08,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:08,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:08,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638888384] [2021-11-25 18:23:08,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:08,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:08,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:08,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:08,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:08,214 INFO L87 Difference]: Start difference. First operand 175 states and 191 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:08,240 INFO L93 Difference]: Finished difference Result 176 states and 191 transitions. [2021-11-25 18:23:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:08,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 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 36 [2021-11-25 18:23:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:08,242 INFO L225 Difference]: With dead ends: 176 [2021-11-25 18:23:08,242 INFO L226 Difference]: Without dead ends: 176 [2021-11-25 18:23:08,242 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:23:08,243 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:08,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:23:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-25 18:23:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-11-25 18:23:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 144 states have (on average 1.3263888888888888) internal successors, (191), 175 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 191 transitions. [2021-11-25 18:23:08,248 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 191 transitions. Word has length 36 [2021-11-25 18:23:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:08,248 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 191 transitions. [2021-11-25 18:23:08,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 191 transitions. [2021-11-25 18:23:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 18:23:08,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:08,250 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:08,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 18:23:08,250 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:08,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash -320171688, now seen corresponding path program 1 times [2021-11-25 18:23:08,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:08,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770594458] [2021-11-25 18:23:08,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:08,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:08,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:08,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770594458] [2021-11-25 18:23:08,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770594458] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:08,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288392893] [2021-11-25 18:23:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:08,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:08,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:08,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:08,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:23:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:08,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-25 18:23:08,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:08,899 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:23:08,899 INFO L388 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 19 treesize of output 18 [2021-11-25 18:23:08,925 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-25 18:23:08,925 INFO L388 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 19 treesize of output 26 [2021-11-25 18:23:09,037 INFO L354 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2021-11-25 18:23:09,037 INFO L388 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 100 treesize of output 84 [2021-11-25 18:23:09,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-25 18:23:09,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:09,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:09,054 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-25 18:23:09,054 INFO L388 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 1 case distinctions, treesize of input 48 treesize of output 50 [2021-11-25 18:23:09,573 INFO L354 Elim1Store]: treesize reduction 3, result has 81.3 percent of original size [2021-11-25 18:23:09,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 60 [2021-11-25 18:23:09,577 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 18:23:09,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 40 [2021-11-25 18:23:09,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 18:23:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:09,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:09,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 88 [2021-11-25 18:23:10,077 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:10,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 342 treesize of output 265 [2021-11-25 18:23:10,095 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:10,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 370 treesize of output 269 [2021-11-25 18:23:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:10,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288392893] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:10,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [69761311] [2021-11-25 18:23:10,663 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-11-25 18:23:10,664 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:10,664 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:10,664 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:10,665 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:10,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,697 INFO L388 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 [2021-11-25 18:23:10,712 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:10,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,720 INFO L388 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 30 treesize of output 21 [2021-11-25 18:23:10,727 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,745 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:10,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,753 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:10,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,762 INFO L388 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 34 treesize of output 21 [2021-11-25 18:23:10,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,781 INFO L388 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 28 treesize of output 30 [2021-11-25 18:23:10,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,794 INFO L388 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 36 treesize of output 23 [2021-11-25 18:23:10,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,804 INFO L388 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 36 treesize of output 23 [2021-11-25 18:23:10,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,839 INFO L388 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 29 treesize of output 35 [2021-11-25 18:23:10,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2021-11-25 18:23:10,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,871 INFO L388 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 28 treesize of output 23 [2021-11-25 18:23:10,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,881 INFO L388 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 0 case distinctions, treesize of input 28 treesize of output 23 [2021-11-25 18:23:10,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:10,922 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-25 18:23:10,922 INFO L388 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 1 case distinctions, treesize of input 172 treesize of output 125 [2021-11-25 18:23:10,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,933 INFO L388 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 0 case distinctions, treesize of input 63 treesize of output 33 [2021-11-25 18:23:10,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,942 INFO L388 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 63 [2021-11-25 18:23:10,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,988 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-25 18:23:10,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2021-11-25 18:23:10,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:10,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:10,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:11,009 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-25 18:23:11,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 84 [2021-11-25 18:23:11,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-25 18:23:11,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,076 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:23:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,086 INFO L388 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 0 case distinctions, treesize of input 47 treesize of output 52 [2021-11-25 18:23:11,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,112 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:23:11,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 48 [2021-11-25 18:23:11,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,225 INFO L388 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 0 case distinctions, treesize of input 58 treesize of output 55 [2021-11-25 18:23:11,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,241 INFO L388 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 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-25 18:23:11,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 42 treesize of output 43 [2021-11-25 18:23:11,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:11,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:11,339 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-11-25 18:23:11,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 192 treesize of output 151 [2021-11-25 18:23:11,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 114 [2021-11-25 18:23:11,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 55 [2021-11-25 18:23:11,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:11,532 INFO L354 Elim1Store]: treesize reduction 192, result has 16.5 percent of original size [2021-11-25 18:23:11,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 320 treesize of output 200 [2021-11-25 18:23:11,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:23:11,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,590 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 18:23:11,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 96 [2021-11-25 18:23:11,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,636 INFO L388 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 0 case distinctions, treesize of input 47 treesize of output 52 [2021-11-25 18:23:11,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,656 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:23:11,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,670 INFO L388 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 0 case distinctions, treesize of input 50 treesize of output 43 [2021-11-25 18:23:11,915 INFO L388 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 [2021-11-25 18:23:11,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:11,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:11,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:23:11,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:11,985 INFO L388 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 114 treesize of output 84 [2021-11-25 18:23:12,002 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-25 18:23:12,002 INFO L388 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 104 treesize of output 82 [2021-11-25 18:23:12,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2021-11-25 18:23:12,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:23:12,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:23:12,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:12,066 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 18:23:12,066 INFO L388 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 77 treesize of output 70 [2021-11-25 18:23:12,096 INFO L354 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2021-11-25 18:23:12,096 INFO L388 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 52 [2021-11-25 18:23:12,105 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:23:14,801 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8755#(and (= |ULTIMATE.start_main_~item~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|)) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (<= (+ |ULTIMATE.start_main_~head~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~head~0#1.base|)) (= |ULTIMATE.start_main_~status~0#1| 1) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (<= (+ 12 |ULTIMATE.start_main_~item~0#1.offset|) (select |#length| |ULTIMATE.start_main_~item~0#1.base|)) (= (select |#valid| |ULTIMATE.start_main_~head~0#1.base|) 1) (= |#NULL.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) |ULTIMATE.start_main_~head~0#1.offset|) |ULTIMATE.start_main_~item~0#1.offset|) (or (not (= |ULTIMATE.start_main_~item~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~item~0#1.base| 0))) (<= (select (select |#memory_int| |ULTIMATE.start_main_~item~0#1.base|) (+ 8 |ULTIMATE.start_main_~item~0#1.offset|)) 0) (<= 0 (+ 8 |ULTIMATE.start_main_~item~0#1.offset|)) (<= 0 |#StackHeapBarrier|) (= (select |#valid| |ULTIMATE.start_main_~item~0#1.base|) 1) (= |#NULL.base| 0))' at error location [2021-11-25 18:23:14,801 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:23:14,802 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:23:14,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 30 [2021-11-25 18:23:14,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083780777] [2021-11-25 18:23:14,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:23:14,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 18:23:14,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 18:23:14,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=2442, Unknown=0, NotChecked=0, Total=2756 [2021-11-25 18:23:14,804 INFO L87 Difference]: Start difference. First operand 176 states and 191 transitions. Second operand has 31 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 30 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:16,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:16,769 INFO L93 Difference]: Finished difference Result 326 states and 350 transitions. [2021-11-25 18:23:16,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 18:23:16,769 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 30 states have internal predecessors, (106), 0 states have call successors, (0), 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 37 [2021-11-25 18:23:16,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:16,771 INFO L225 Difference]: With dead ends: 326 [2021-11-25 18:23:16,771 INFO L226 Difference]: Without dead ends: 326 [2021-11-25 18:23:16,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=767, Invalid=5395, Unknown=0, NotChecked=0, Total=6162 [2021-11-25 18:23:16,774 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 1064 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:16,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 1229 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1097 Invalid, 0 Unknown, 196 Unchecked, 0.7s Time] [2021-11-25 18:23:16,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-25 18:23:16,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 175. [2021-11-25 18:23:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 143 states have (on average 1.3216783216783217) internal successors, (189), 174 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 189 transitions. [2021-11-25 18:23:16,781 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 189 transitions. Word has length 37 [2021-11-25 18:23:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:16,781 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 189 transitions. [2021-11-25 18:23:16,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4193548387096775) internal successors, (106), 30 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 189 transitions. [2021-11-25 18:23:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 18:23:16,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:16,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:16,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:16,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-25 18:23:16,998 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash 880105047, now seen corresponding path program 1 times [2021-11-25 18:23:16,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:16,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838209539] [2021-11-25 18:23:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:16,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:17,039 ERROR L253 erpolLogProxyWrapper]: Interpolant 9 not inductive [2021-11-25 18:23:17,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 18:23:17,050 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:232) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:343) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:343) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:198) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:296) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 18:23:17,053 INFO L158 Benchmark]: Toolchain (without parser) took 73323.19ms. Allocated memory was 115.3MB in the beginning and 490.7MB in the end (delta: 375.4MB). Free memory was 84.7MB in the beginning and 406.4MB in the end (delta: -321.8MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2021-11-25 18:23:17,054 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory was 71.6MB in the beginning and 71.5MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:23:17,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 643.45ms. Allocated memory is still 115.3MB. Free memory was 84.7MB in the beginning and 82.0MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:23:17,054 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.46ms. Allocated memory is still 115.3MB. Free memory was 82.0MB in the beginning and 79.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 18:23:17,055 INFO L158 Benchmark]: Boogie Preprocessor took 56.66ms. Allocated memory is still 115.3MB. Free memory was 79.5MB in the beginning and 77.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:23:17,055 INFO L158 Benchmark]: RCFGBuilder took 848.15ms. Allocated memory is still 115.3MB. Free memory was 77.4MB in the beginning and 52.7MB in the end (delta: 24.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-25 18:23:17,055 INFO L158 Benchmark]: TraceAbstraction took 71686.16ms. Allocated memory was 157.3MB in the beginning and 490.7MB in the end (delta: 333.4MB). Free memory was 131.7MB in the beginning and 406.4MB in the end (delta: -274.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2021-11-25 18:23:17,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory was 71.6MB in the beginning and 71.5MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 643.45ms. Allocated memory is still 115.3MB. Free memory was 84.7MB in the beginning and 82.0MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.46ms. Allocated memory is still 115.3MB. Free memory was 82.0MB in the beginning and 79.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.66ms. Allocated memory is still 115.3MB. Free memory was 79.5MB in the beginning and 77.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 848.15ms. Allocated memory is still 115.3MB. Free memory was 77.4MB in the beginning and 52.7MB in the end (delta: 24.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 71686.16ms. Allocated memory was 157.3MB in the beginning and 490.7MB in the end (delta: 333.4MB). Free memory was 131.7MB in the beginning and 406.4MB in the end (delta: -274.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 18:23:17,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 338b6951ab628b0237aa41c64d1786e44f90130a76a8fd0978f750b3fe39d026 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:23:19,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:23:19,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:23:19,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:23:19,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:23:19,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:23:19,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:23:19,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:23:19,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:23:19,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:23:19,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:23:19,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:23:19,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:23:19,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:23:19,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:23:19,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:23:19,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:23:19,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:23:19,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:23:19,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:23:19,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:23:19,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:23:19,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:23:19,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:23:19,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:23:19,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:23:19,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:23:19,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:23:19,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:23:19,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:23:19,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:23:19,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:23:19,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:23:19,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:23:19,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:23:19,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:23:19,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:23:19,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:23:19,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:23:19,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:23:19,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:23:19,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2021-11-25 18:23:19,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:23:19,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:23:19,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:23:19,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:23:19,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:23:19,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:23:19,785 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:23:19,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:23:19,785 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:23:19,785 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:23:19,786 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:23:19,787 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:23:19,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 18:23:19,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 18:23:19,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:23:19,789 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:23:19,790 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:23:19,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:23:19,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:23:19,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:23:19,792 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 18:23:19,793 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 18:23:19,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:23:19,798 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:23:19,798 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:23:19,799 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:23:19,799 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:23:19,799 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:23:19,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:23:19,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:23:19,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:23:19,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:23:19,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:23:19,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:23:19,801 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:23:19,802 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:23:19,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:23:19,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:23:19,802 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 338b6951ab628b0237aa41c64d1786e44f90130a76a8fd0978f750b3fe39d026 [2021-11-25 18:23:20,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:23:20,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:23:20,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:23:20,201 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:23:20,202 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:23:20,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/forester-heap/dll-queue-2.i [2021-11-25 18:23:20,275 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/data/f4cc2acd5/ba53a1b513ae4ef79224cbd805069fad/FLAGdfa2227ea [2021-11-25 18:23:20,873 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:23:20,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i [2021-11-25 18:23:20,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/data/f4cc2acd5/ba53a1b513ae4ef79224cbd805069fad/FLAGdfa2227ea [2021-11-25 18:23:21,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/data/f4cc2acd5/ba53a1b513ae4ef79224cbd805069fad [2021-11-25 18:23:21,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:23:21,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:23:21,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:23:21,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:23:21,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:23:21,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e35c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21, skipping insertion in model container [2021-11-25 18:23:21,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:23:21,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:23:21,576 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22460,22473] [2021-11-25 18:23:21,580 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22531,22544] [2021-11-25 18:23:21,582 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22605,22618] [2021-11-25 18:23:21,583 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22697,22710] [2021-11-25 18:23:21,584 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22774,22787] [2021-11-25 18:23:21,586 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22869,22882] [2021-11-25 18:23:21,587 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22946,22959] [2021-11-25 18:23:21,588 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23029,23042] [2021-11-25 18:23:21,590 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23124,23137] [2021-11-25 18:23:21,591 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23201,23214] [2021-11-25 18:23:21,592 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23284,23297] [2021-11-25 18:23:21,594 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23373,23386] [2021-11-25 18:23:21,596 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23459,23472] [2021-11-25 18:23:21,598 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23604,23617] [2021-11-25 18:23:21,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:23:21,616 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:23:21,661 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22460,22473] [2021-11-25 18:23:21,662 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22531,22544] [2021-11-25 18:23:21,663 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22605,22618] [2021-11-25 18:23:21,664 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22697,22710] [2021-11-25 18:23:21,665 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22774,22787] [2021-11-25 18:23:21,666 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22869,22882] [2021-11-25 18:23:21,667 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[22946,22959] [2021-11-25 18:23:21,669 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23029,23042] [2021-11-25 18:23:21,670 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23124,23137] [2021-11-25 18:23:21,671 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23201,23214] [2021-11-25 18:23:21,672 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23284,23297] [2021-11-25 18:23:21,674 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23373,23386] [2021-11-25 18:23:21,678 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23459,23472] [2021-11-25 18:23:21,680 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_169c7bc4-f52e-45c5-87c5-a561e2b2863a/sv-benchmarks/c/forester-heap/dll-queue-2.i[23604,23617] [2021-11-25 18:23:21,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:23:21,737 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:23:21,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21 WrapperNode [2021-11-25 18:23:21,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:23:21,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:23:21,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:23:21,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:23:21,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,811 INFO L137 Inliner]: procedures = 122, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 220 [2021-11-25 18:23:21,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:23:21,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:23:21,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:23:21,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:23:21,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:23:21,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:23:21,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:23:21,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:23:21,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2021-11-25 18:23:21,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:23:21,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:21,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:23:21,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:23:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 18:23:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:23:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:23:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:23:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:23:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:23:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 18:23:21,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:23:21,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:23:21,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:23:22,067 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:23:22,069 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:23:22,847 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:23:22,855 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:23:22,856 INFO L301 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-25 18:23:22,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:22 BoogieIcfgContainer [2021-11-25 18:23:22,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:23:22,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:23:22,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:23:22,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:23:22,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:23:21" (1/3) ... [2021-11-25 18:23:22,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ceedc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:22, skipping insertion in model container [2021-11-25 18:23:22,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (2/3) ... [2021-11-25 18:23:22,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ceedc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:22, skipping insertion in model container [2021-11-25 18:23:22,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:22" (3/3) ... [2021-11-25 18:23:22,866 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-queue-2.i [2021-11-25 18:23:22,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:23:22,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-11-25 18:23:22,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:23:22,923 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:23:22,924 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-11-25 18:23:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 101 states have (on average 2.297029702970297) internal successors, (232), 177 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:22,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 18:23:22,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:22,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 18:23:22,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:22,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:22,955 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-25 18:23:22,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:22,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942042798] [2021-11-25 18:23:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:22,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:22,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:22,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:23,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:23:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:23,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:23:23,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:23,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:23,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:23,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:23,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942042798] [2021-11-25 18:23:23,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942042798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:23,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:23,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:23:23,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939721993] [2021-11-25 18:23:23,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:23,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:23,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:23,215 INFO L87 Difference]: Start difference. First operand has 178 states, 101 states have (on average 2.297029702970297) internal successors, (232), 177 states have internal predecessors, (232), 0 states have call successors, (0), 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, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:23,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:23,583 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2021-11-25 18:23:23,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:23,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-11-25 18:23:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:23,597 INFO L225 Difference]: With dead ends: 175 [2021-11-25 18:23:23,597 INFO L226 Difference]: Without dead ends: 171 [2021-11-25 18:23:23,599 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:23:23,603 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 165 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:23,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 108 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:23:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-25 18:23:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-11-25 18:23:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 102 states have (on average 1.7450980392156863) internal successors, (178), 166 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 178 transitions. [2021-11-25 18:23:23,678 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 178 transitions. Word has length 3 [2021-11-25 18:23:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:23,679 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 178 transitions. [2021-11-25 18:23:23,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:23,679 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 178 transitions. [2021-11-25 18:23:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 18:23:23,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:23,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 18:23:23,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:23,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:23,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:23,900 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-25 18:23:23,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:23,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380146561] [2021-11-25 18:23:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:23,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:23,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:23,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:23,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:23:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:23,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:23:23,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:24,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:24,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:24,026 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:24,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380146561] [2021-11-25 18:23:24,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380146561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:24,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:24,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:23:24,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367431609] [2021-11-25 18:23:24,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:24,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:24,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:24,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:24,032 INFO L87 Difference]: Start difference. First operand 167 states and 178 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:24,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:24,358 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2021-11-25 18:23:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:24,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-11-25 18:23:24,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:24,361 INFO L225 Difference]: With dead ends: 160 [2021-11-25 18:23:24,361 INFO L226 Difference]: Without dead ends: 160 [2021-11-25 18:23:24,361 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:23:24,363 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 151 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:24,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 111 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:23:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-25 18:23:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2021-11-25 18:23:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 102 states have (on average 1.6274509803921569) internal successors, (166), 155 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2021-11-25 18:23:24,388 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 3 [2021-11-25 18:23:24,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:24,396 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2021-11-25 18:23:24,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2021-11-25 18:23:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:23:24,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:24,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:24,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:24,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:24,611 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 59261803, now seen corresponding path program 1 times [2021-11-25 18:23:24,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:24,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829431179] [2021-11-25 18:23:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:24,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:24,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:24,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:24,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 18:23:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:24,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:23:24,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:24,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:24,811 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 18:23:24,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-25 18:23:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:24,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:24,841 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:24,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829431179] [2021-11-25 18:23:24,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829431179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:24,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:24,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:24,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925858751] [2021-11-25 18:23:24,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:24,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:24,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:24,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:24,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:24,845 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-25 18:23:25,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:25,233 INFO L93 Difference]: Finished difference Result 165 states and 174 transitions. [2021-11-25 18:23:25,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:23:25,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-11-25 18:23:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:25,236 INFO L225 Difference]: With dead ends: 165 [2021-11-25 18:23:25,236 INFO L226 Difference]: Without dead ends: 165 [2021-11-25 18:23:25,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:25,238 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 268 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:25,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 110 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:23:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-25 18:23:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2021-11-25 18:23:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 156 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2021-11-25 18:23:25,257 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 8 [2021-11-25 18:23:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:25,258 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2021-11-25 18:23:25,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-25 18:23:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2021-11-25 18:23:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:23:25,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:25,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:25,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:25,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:25,471 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:25,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:25,472 INFO L85 PathProgramCache]: Analyzing trace with hash 59261804, now seen corresponding path program 1 times [2021-11-25 18:23:25,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:25,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833415572] [2021-11-25 18:23:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:25,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:25,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:25,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 18:23:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:25,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:23:25,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:25,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:25,685 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:25,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 18:23:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:25,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:25,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:25,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833415572] [2021-11-25 18:23:25,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833415572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:25,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:25,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:25,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470840683] [2021-11-25 18:23:25,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:25,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:25,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:25,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:25,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:25,715 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-25 18:23:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:26,290 INFO L93 Difference]: Finished difference Result 252 states and 267 transitions. [2021-11-25 18:23:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:23:26,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-11-25 18:23:26,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:26,295 INFO L225 Difference]: With dead ends: 252 [2021-11-25 18:23:26,295 INFO L226 Difference]: Without dead ends: 252 [2021-11-25 18:23:26,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:26,297 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 329 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:26,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 179 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:23:26,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-25 18:23:26,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 164. [2021-11-25 18:23:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 116 states have (on average 1.5517241379310345) internal successors, (180), 163 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2021-11-25 18:23:26,326 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 8 [2021-11-25 18:23:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:26,326 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2021-11-25 18:23:26,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-25 18:23:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2021-11-25 18:23:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:23:26,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:26,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:26,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:26,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:26,539 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:26,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:26,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1837116747, now seen corresponding path program 1 times [2021-11-25 18:23:26,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:26,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993970933] [2021-11-25 18:23:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:26,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:26,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:26,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:26,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 18:23:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:26,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:23:26,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:26,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:26,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:26,637 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:26,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993970933] [2021-11-25 18:23:26,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993970933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:26,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:26,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:26,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366485834] [2021-11-25 18:23:26,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:26,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:26,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:26,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:26,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:26,640 INFO L87 Difference]: Start difference. First operand 164 states and 180 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:26,729 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-11-25 18:23:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:26,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-25 18:23:26,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:26,731 INFO L225 Difference]: With dead ends: 154 [2021-11-25 18:23:26,731 INFO L226 Difference]: Without dead ends: 154 [2021-11-25 18:23:26,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:26,733 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 128 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:26,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 137 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-25 18:23:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-25 18:23:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 111 states have (on average 1.5225225225225225) internal successors, (169), 153 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 169 transitions. [2021-11-25 18:23:26,741 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 169 transitions. Word has length 9 [2021-11-25 18:23:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:26,741 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 169 transitions. [2021-11-25 18:23:26,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 169 transitions. [2021-11-25 18:23:26,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:23:26,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:26,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:26,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:26,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:26,954 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:26,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:26,954 INFO L85 PathProgramCache]: Analyzing trace with hash 236809587, now seen corresponding path program 1 times [2021-11-25 18:23:26,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:26,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846030518] [2021-11-25 18:23:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:26,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:26,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:26,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:26,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 18:23:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:27,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:23:27,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:27,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:27,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:27,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-25 18:23:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:27,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:27,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:27,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846030518] [2021-11-25 18:23:27,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846030518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:27,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:27,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:23:27,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273627829] [2021-11-25 18:23:27,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:27,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:23:27,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:23:27,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:27,199 INFO L87 Difference]: Start difference. First operand 154 states and 169 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:27,625 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2021-11-25 18:23:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:23:27,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 18:23:27,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:27,626 INFO L225 Difference]: With dead ends: 153 [2021-11-25 18:23:27,626 INFO L226 Difference]: Without dead ends: 153 [2021-11-25 18:23:27,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:23:27,628 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 9 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:27,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 405 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:23:27,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-25 18:23:27,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-25 18:23:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 111 states have (on average 1.5045045045045045) internal successors, (167), 152 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 167 transitions. [2021-11-25 18:23:27,635 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 167 transitions. Word has length 11 [2021-11-25 18:23:27,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:27,636 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 167 transitions. [2021-11-25 18:23:27,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 167 transitions. [2021-11-25 18:23:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:23:27,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:27,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:27,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:27,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:27,849 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:27,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:27,849 INFO L85 PathProgramCache]: Analyzing trace with hash 236809588, now seen corresponding path program 1 times [2021-11-25 18:23:27,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:27,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401511795] [2021-11-25 18:23:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:27,851 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:27,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:27,852 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:27,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 18:23:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:27,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:23:27,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:27,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:27,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:27,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:28,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-25 18:23:28,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:23:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:28,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:28,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:28,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401511795] [2021-11-25 18:23:28,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401511795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:28,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:28,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:23:28,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383737679] [2021-11-25 18:23:28,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:28,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:23:28,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:28,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:23:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:28,082 INFO L87 Difference]: Start difference. First operand 153 states and 167 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:28,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:28,556 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2021-11-25 18:23:28,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:23:28,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 18:23:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:28,558 INFO L225 Difference]: With dead ends: 152 [2021-11-25 18:23:28,558 INFO L226 Difference]: Without dead ends: 152 [2021-11-25 18:23:28,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:23:28,560 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 4 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:28,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 407 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:23:28,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-25 18:23:28,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-25 18:23:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 111 states have (on average 1.4864864864864864) internal successors, (165), 151 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2021-11-25 18:23:28,572 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 11 [2021-11-25 18:23:28,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:28,572 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2021-11-25 18:23:28,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:28,572 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2021-11-25 18:23:28,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:23:28,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:28,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:28,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-25 18:23:28,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:28,782 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:28,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:28,783 INFO L85 PathProgramCache]: Analyzing trace with hash 845693984, now seen corresponding path program 1 times [2021-11-25 18:23:28,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:28,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519101484] [2021-11-25 18:23:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:28,783 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:28,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:28,784 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:28,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 18:23:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:28,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:23:28,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:28,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:28,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:28,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519101484] [2021-11-25 18:23:28,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519101484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:28,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:28,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:28,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917596033] [2021-11-25 18:23:28,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:28,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:28,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:28,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:28,896 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:28,924 INFO L93 Difference]: Finished difference Result 202 states and 220 transitions. [2021-11-25 18:23:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:28,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 18:23:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:28,926 INFO L225 Difference]: With dead ends: 202 [2021-11-25 18:23:28,926 INFO L226 Difference]: Without dead ends: 202 [2021-11-25 18:23:28,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:28,927 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 50 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:28,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 265 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:23:28,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-25 18:23:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 160. [2021-11-25 18:23:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 119 states have (on average 1.4705882352941178) internal successors, (175), 159 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2021-11-25 18:23:28,935 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 15 [2021-11-25 18:23:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:28,935 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2021-11-25 18:23:28,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2021-11-25 18:23:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:23:28,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:28,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:28,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:29,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:29,149 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:29,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1108053835, now seen corresponding path program 1 times [2021-11-25 18:23:29,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:29,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061384940] [2021-11-25 18:23:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:29,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:29,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:29,151 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:29,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 18:23:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:29,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 18:23:29,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:29,304 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-25 18:23:29,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 21 [2021-11-25 18:23:29,447 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-25 18:23:29,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 50 [2021-11-25 18:23:29,583 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:30,004 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:30,006 INFO L388 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 47 treesize of output 46 [2021-11-25 18:23:30,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2021-11-25 18:23:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:30,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:30,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:30,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061384940] [2021-11-25 18:23:30,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061384940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:30,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:30,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:23:30,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316556078] [2021-11-25 18:23:30,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:30,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:23:30,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:30,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:23:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:23:30,707 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:31,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:31,187 INFO L93 Difference]: Finished difference Result 204 states and 220 transitions. [2021-11-25 18:23:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:23:31,188 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 18:23:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:31,190 INFO L225 Difference]: With dead ends: 204 [2021-11-25 18:23:31,190 INFO L226 Difference]: Without dead ends: 204 [2021-11-25 18:23:31,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:23:31,191 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 95 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:31,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 727 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 237 Unchecked, 0.3s Time] [2021-11-25 18:23:31,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-25 18:23:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 160. [2021-11-25 18:23:31,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 119 states have (on average 1.4621848739495797) internal successors, (174), 159 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:31,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2021-11-25 18:23:31,197 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 15 [2021-11-25 18:23:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:31,200 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2021-11-25 18:23:31,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:31,200 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2021-11-25 18:23:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:23:31,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:31,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:31,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:31,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:31,402 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:31,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:31,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1108053834, now seen corresponding path program 1 times [2021-11-25 18:23:31,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:31,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371687520] [2021-11-25 18:23:31,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:31,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:31,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:31,404 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:31,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 18:23:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:31,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-25 18:23:31,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:31,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:31,593 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:23:31,593 INFO L388 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 19 treesize of output 19 [2021-11-25 18:23:31,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:31,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:31,641 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:31,751 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:31,751 INFO L388 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 38 treesize of output 37 [2021-11-25 18:23:31,758 INFO L388 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 [2021-11-25 18:23:31,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:23:31,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2021-11-25 18:23:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:31,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:31,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:31,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371687520] [2021-11-25 18:23:31,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371687520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:31,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:31,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:23:31,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482941424] [2021-11-25 18:23:31,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:31,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:23:31,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:23:31,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:23:31,853 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:32,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:32,977 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2021-11-25 18:23:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:23:32,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 18:23:32,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:32,978 INFO L225 Difference]: With dead ends: 159 [2021-11-25 18:23:32,978 INFO L226 Difference]: Without dead ends: 159 [2021-11-25 18:23:32,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-11-25 18:23:32,979 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 324 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:32,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 367 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:23:32,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-25 18:23:32,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 153. [2021-11-25 18:23:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 119 states have (on average 1.3949579831932772) internal successors, (166), 152 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:32,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2021-11-25 18:23:32,985 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 15 [2021-11-25 18:23:32,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:32,986 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2021-11-25 18:23:32,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2021-11-25 18:23:32,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-25 18:23:32,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:32,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:33,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:33,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:33,199 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:33,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1512275769, now seen corresponding path program 1 times [2021-11-25 18:23:33,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:33,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576180025] [2021-11-25 18:23:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:33,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:33,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:33,201 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:33,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 18:23:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:33,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:23:33,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:33,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:33,320 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:33,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576180025] [2021-11-25 18:23:33,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576180025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:33,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:33,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:23:33,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254790128] [2021-11-25 18:23:33,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:33,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:33,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:33,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:33,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:33,323 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:33,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:33,364 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2021-11-25 18:23:33,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:23:33,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 [2021-11-25 18:23:33,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:33,366 INFO L225 Difference]: With dead ends: 184 [2021-11-25 18:23:33,366 INFO L226 Difference]: Without dead ends: 184 [2021-11-25 18:23:33,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:33,368 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 34 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:33,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 376 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:23:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-25 18:23:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 162. [2021-11-25 18:23:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.3828125) internal successors, (177), 161 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 177 transitions. [2021-11-25 18:23:33,381 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 177 transitions. Word has length 18 [2021-11-25 18:23:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:33,381 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 177 transitions. [2021-11-25 18:23:33,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 177 transitions. [2021-11-25 18:23:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 18:23:33,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:33,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:33,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-25 18:23:33,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:33,596 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:33,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1578871877, now seen corresponding path program 1 times [2021-11-25 18:23:33,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:33,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420776361] [2021-11-25 18:23:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:33,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:33,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:33,601 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:33,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 18:23:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:33,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:23:33,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:33,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:33,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:33,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420776361] [2021-11-25 18:23:33,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420776361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:33,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:33,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:33,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167325406] [2021-11-25 18:23:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:33,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:23:33,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:23:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:33,856 INFO L87 Difference]: Start difference. First operand 162 states and 177 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:34,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:34,186 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2021-11-25 18:23:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:23:34,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-25 18:23:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:34,188 INFO L225 Difference]: With dead ends: 166 [2021-11-25 18:23:34,188 INFO L226 Difference]: Without dead ends: 166 [2021-11-25 18:23:34,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:23:34,189 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 281 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:34,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 207 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:23:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-25 18:23:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2021-11-25 18:23:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.375) internal successors, (176), 161 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 176 transitions. [2021-11-25 18:23:34,195 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 176 transitions. Word has length 20 [2021-11-25 18:23:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:34,196 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 176 transitions. [2021-11-25 18:23:34,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 176 transitions. [2021-11-25 18:23:34,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 18:23:34,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:34,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:34,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:34,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:34,398 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:34,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1598030539, now seen corresponding path program 1 times [2021-11-25 18:23:34,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:34,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553140811] [2021-11-25 18:23:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:34,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:34,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:34,400 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:34,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 18:23:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:34,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 18:23:34,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:34,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:34,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:34,568 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:23:34,569 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:34,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:34,577 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:34,604 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:23:34,604 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:34,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:34,615 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:34,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:23:34,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:23:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:34,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:34,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:34,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553140811] [2021-11-25 18:23:34,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553140811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:34,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:34,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:23:34,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480782769] [2021-11-25 18:23:34,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:34,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:23:34,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:23:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:34,729 INFO L87 Difference]: Start difference. First operand 162 states and 176 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:35,028 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2021-11-25 18:23:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:23:35,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-25 18:23:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:35,031 INFO L225 Difference]: With dead ends: 159 [2021-11-25 18:23:35,031 INFO L226 Difference]: Without dead ends: 159 [2021-11-25 18:23:35,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:23:35,032 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 6 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:35,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 455 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:23:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-25 18:23:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2021-11-25 18:23:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 122 states have (on average 1.3688524590163935) internal successors, (167), 155 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2021-11-25 18:23:35,038 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 20 [2021-11-25 18:23:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:35,038 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2021-11-25 18:23:35,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2021-11-25 18:23:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 18:23:35,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:35,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:35,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:35,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:35,240 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash -279759618, now seen corresponding path program 1 times [2021-11-25 18:23:35,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:35,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295639702] [2021-11-25 18:23:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:35,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:35,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:35,243 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:35,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 18:23:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:35,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:23:35,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:35,435 INFO L388 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 14 [2021-11-25 18:23:35,466 INFO L388 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 15 treesize of output 17 [2021-11-25 18:23:35,508 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:23:35,509 INFO L388 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 15 treesize of output 15 [2021-11-25 18:23:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:35,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:35,525 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:35,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295639702] [2021-11-25 18:23:35,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295639702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:35,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:35,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:35,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879420352] [2021-11-25 18:23:35,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:35,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:35,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:35,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:35,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:35,528 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:35,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:35,774 INFO L93 Difference]: Finished difference Result 155 states and 165 transitions. [2021-11-25 18:23:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:23:35,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-25 18:23:35,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:35,776 INFO L225 Difference]: With dead ends: 155 [2021-11-25 18:23:35,776 INFO L226 Difference]: Without dead ends: 155 [2021-11-25 18:23:35,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:35,777 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 214 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:35,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 117 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:23:35,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-25 18:23:35,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-11-25 18:23:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 121 states have (on average 1.3636363636363635) internal successors, (165), 153 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:35,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2021-11-25 18:23:35,782 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 22 [2021-11-25 18:23:35,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:35,783 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2021-11-25 18:23:35,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:35,783 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2021-11-25 18:23:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 18:23:35,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:35,784 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:35,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:35,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:35,984 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:35,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:35,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1985676737, now seen corresponding path program 1 times [2021-11-25 18:23:35,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:35,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92287361] [2021-11-25 18:23:35,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:35,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:35,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:35,987 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:36,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 18:23:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:36,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 18:23:36,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:36,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:36,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:36,200 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:23:36,200 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:36,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:36,210 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:36,242 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:23:36,243 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:36,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:36,252 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:36,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:23:36,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:23:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:36,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:36,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:36,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92287361] [2021-11-25 18:23:36,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92287361] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:36,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2141631798] [2021-11-25 18:23:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:36,593 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:23:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:23:36,596 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:23:36,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-25 18:23:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:36,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 18:23:36,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:36,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:36,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:36,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:36,837 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:36,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:36,845 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:36,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:36,866 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:36,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:36,876 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:37,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:23:37,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:23:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:37,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:37,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2141631798] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:37,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124515895] [2021-11-25 18:23:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:37,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:37,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:37,221 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:37,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 18:23:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:37,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 18:23:37,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:37,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:37,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:37,371 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:23:37,372 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:37,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:37,382 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:37,411 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-25 18:23:37,411 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:37,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:23:37,422 INFO L388 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 21 treesize of output 20 [2021-11-25 18:23:37,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:23:37,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:23:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:37,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:37,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124515895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:37,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:23:37,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 5, 6, 5] total 8 [2021-11-25 18:23:37,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116646110] [2021-11-25 18:23:37,759 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:23:37,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:23:37,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:37,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:23:37,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:23:37,761 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:38,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:38,317 INFO L93 Difference]: Finished difference Result 161 states and 172 transitions. [2021-11-25 18:23:38,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:23:38,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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 [2021-11-25 18:23:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:38,320 INFO L225 Difference]: With dead ends: 161 [2021-11-25 18:23:38,320 INFO L226 Difference]: Without dead ends: 161 [2021-11-25 18:23:38,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 120 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:23:38,321 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 137 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:38,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 631 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:23:38,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-25 18:23:38,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-11-25 18:23:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 128 states have (on average 1.34375) internal successors, (172), 160 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 172 transitions. [2021-11-25 18:23:38,327 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 172 transitions. Word has length 23 [2021-11-25 18:23:38,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:38,328 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 172 transitions. [2021-11-25 18:23:38,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:38,328 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 172 transitions. [2021-11-25 18:23:38,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 18:23:38,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:38,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:38,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:38,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:38,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-25 18:23:38,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:38,941 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:38,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:38,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1426435580, now seen corresponding path program 1 times [2021-11-25 18:23:38,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:38,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936044270] [2021-11-25 18:23:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:38,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:38,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:38,943 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:38,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 18:23:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:39,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:23:39,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:39,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:39,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:39,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936044270] [2021-11-25 18:23:39,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936044270] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:39,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1926114461] [2021-11-25 18:23:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:39,432 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:23:39,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:23:39,434 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:23:39,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-25 18:23:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:39,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:23:39,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:39,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:40,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1926114461] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:40,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187589202] [2021-11-25 18:23:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:40,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:40,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:40,041 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:40,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 18:23:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:40,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:23:40,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:40,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:23:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:40,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:40,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187589202] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:40,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:23:40,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 11 [2021-11-25 18:23:40,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060507441] [2021-11-25 18:23:40,312 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:23:40,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:23:40,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:23:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:23:40,314 INFO L87 Difference]: Start difference. First operand 161 states and 172 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:40,541 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2021-11-25 18:23:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:23:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 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 [2021-11-25 18:23:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:40,543 INFO L225 Difference]: With dead ends: 163 [2021-11-25 18:23:40,543 INFO L226 Difference]: Without dead ends: 146 [2021-11-25 18:23:40,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 113 SyntacticMatches, 15 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:23:40,544 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 2 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:40,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 452 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 104 Unchecked, 0.2s Time] [2021-11-25 18:23:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-25 18:23:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-11-25 18:23:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 113 states have (on average 1.3805309734513274) internal successors, (156), 145 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 156 transitions. [2021-11-25 18:23:40,550 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 156 transitions. Word has length 24 [2021-11-25 18:23:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:40,550 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 156 transitions. [2021-11-25 18:23:40,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 156 transitions. [2021-11-25 18:23:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 18:23:40,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:40,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:40,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:40,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:40,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:41,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:41,155 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:41,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:41,155 INFO L85 PathProgramCache]: Analyzing trace with hash -815352664, now seen corresponding path program 1 times [2021-11-25 18:23:41,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:41,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986896710] [2021-11-25 18:23:41,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:41,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:41,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:41,157 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:41,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 18:23:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:41,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 18:23:41,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:41,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:41,384 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:23:41,384 INFO L388 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 17 treesize of output 17 [2021-11-25 18:23:41,423 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:41,530 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:41,531 INFO L388 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 [2021-11-25 18:23:41,649 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:41,649 INFO L388 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 30 treesize of output 28 [2021-11-25 18:23:41,698 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:41,699 INFO L388 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 [2021-11-25 18:23:41,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-25 18:23:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:41,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:41,902 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_579) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:41,940 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_579) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-25 18:23:41,949 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_579) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:41,965 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_577))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_579)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:41,996 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_577 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_579 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_577))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_579)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:42,012 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:42,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2021-11-25 18:23:42,060 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:42,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 220 [2021-11-25 18:23:42,107 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:42,108 INFO L388 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 204 treesize of output 197 [2021-11-25 18:23:42,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 180 [2021-11-25 18:23:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:42,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:42,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986896710] [2021-11-25 18:23:42,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986896710] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:42,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [716309532] [2021-11-25 18:23:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:42,491 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:23:42,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:23:42,492 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:23:42,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-25 18:23:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:42,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-25 18:23:42,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:42,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:42,901 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:23:42,902 INFO L388 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 14 treesize of output 14 [2021-11-25 18:23:42,971 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:43,129 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:43,129 INFO L388 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 [2021-11-25 18:23:43,283 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:43,284 INFO L388 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 30 treesize of output 28 [2021-11-25 18:23:43,328 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:43,329 INFO L388 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 [2021-11-25 18:23:43,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-25 18:23:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:43,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:43,531 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_631 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_631) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-11-25 18:23:43,546 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_631 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_631) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:43,556 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_631 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_631) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:43,573 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_631 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_629))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_631)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:43,586 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_631 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_629))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_631)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:43,604 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:43,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2021-11-25 18:23:43,619 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:43,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 128 [2021-11-25 18:23:43,638 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:43,638 INFO L388 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 112 treesize of output 111 [2021-11-25 18:23:43,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 98 [2021-11-25 18:23:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:43,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [716309532] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:43,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630099606] [2021-11-25 18:23:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:43,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:43,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:43,907 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:43,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-25 18:23:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:44,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-25 18:23:44,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:44,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:44,085 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:23:44,085 INFO L388 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 17 treesize of output 17 [2021-11-25 18:23:44,102 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:44,171 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:44,172 INFO L388 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 [2021-11-25 18:23:44,241 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:44,241 INFO L388 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 30 treesize of output 28 [2021-11-25 18:23:44,282 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:44,283 INFO L388 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 [2021-11-25 18:23:44,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-25 18:23:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:44,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:44,417 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_683) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:44,434 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_683) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:44,443 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_683) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:44,459 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_681))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_683)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:44,472 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_681))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_683)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-11-25 18:23:44,497 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:44,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2021-11-25 18:23:44,514 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:44,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 128 [2021-11-25 18:23:44,534 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:44,535 INFO L388 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 112 treesize of output 111 [2021-11-25 18:23:44,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 98 [2021-11-25 18:23:44,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:44,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630099606] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:44,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:23:44,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11, 12, 11, 12] total 37 [2021-11-25 18:23:44,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332312226] [2021-11-25 18:23:44,779 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:23:44,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-25 18:23:44,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:44,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-25 18:23:44,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=393, Unknown=15, NotChecked=810, Total=1332 [2021-11-25 18:23:44,781 INFO L87 Difference]: Start difference. First operand 146 states and 156 transitions. Second operand has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:46,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:46,785 INFO L93 Difference]: Finished difference Result 282 states and 306 transitions. [2021-11-25 18:23:46,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:23:46,786 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-25 18:23:46,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:46,788 INFO L225 Difference]: With dead ends: 282 [2021-11-25 18:23:46,788 INFO L226 Difference]: Without dead ends: 282 [2021-11-25 18:23:46,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 141 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 15 IntricatePredicates, 1 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=223, Invalid=692, Unknown=15, NotChecked=1050, Total=1980 [2021-11-25 18:23:46,793 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 698 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 3504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2732 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:46,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 1411 Invalid, 3504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 721 Invalid, 0 Unknown, 2732 Unchecked, 1.4s Time] [2021-11-25 18:23:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-25 18:23:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 160. [2021-11-25 18:23:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 127 states have (on average 1.3543307086614174) internal successors, (172), 159 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 172 transitions. [2021-11-25 18:23:46,800 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 172 transitions. Word has length 31 [2021-11-25 18:23:46,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:46,800 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 172 transitions. [2021-11-25 18:23:46,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 172 transitions. [2021-11-25 18:23:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 18:23:46,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:46,802 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:46,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:47,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-25 18:23:47,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-25 18:23:47,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:47,405 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:47,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1525866813, now seen corresponding path program 1 times [2021-11-25 18:23:47,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:47,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825207652] [2021-11-25 18:23:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:47,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:47,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:47,407 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:47,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-25 18:23:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:47,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:23:47,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:47,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:47,658 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 18:23:47,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-25 18:23:47,702 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:47,813 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:47,814 INFO L388 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 32 treesize of output 33 [2021-11-25 18:23:47,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-25 18:23:48,239 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-25 18:23:48,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 48 [2021-11-25 18:23:48,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:23:48,761 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:48,762 INFO L388 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 1 case distinctions, treesize of input 40 treesize of output 39 [2021-11-25 18:23:48,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 37 treesize of output 21 [2021-11-25 18:23:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:49,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:49,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:49,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825207652] [2021-11-25 18:23:49,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825207652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:49,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:49,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 18:23:49,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631987803] [2021-11-25 18:23:49,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:49,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 18:23:49,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:49,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 18:23:49,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:23:49,230 INFO L87 Difference]: Start difference. First operand 160 states and 172 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:49,448 INFO L93 Difference]: Finished difference Result 201 states and 220 transitions. [2021-11-25 18:23:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:23:49,449 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-25 18:23:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:49,451 INFO L225 Difference]: With dead ends: 201 [2021-11-25 18:23:49,451 INFO L226 Difference]: Without dead ends: 201 [2021-11-25 18:23:49,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:23:49,452 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 99 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:49,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 614 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 74 Unchecked, 0.2s Time] [2021-11-25 18:23:49,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-25 18:23:49,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 178. [2021-11-25 18:23:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 145 states have (on average 1.3379310344827586) internal successors, (194), 177 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2021-11-25 18:23:49,457 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 31 [2021-11-25 18:23:49,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:49,458 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2021-11-25 18:23:49,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2021-11-25 18:23:49,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 18:23:49,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:49,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:49,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:49,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:49,671 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:49,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:49,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1649213984, now seen corresponding path program 1 times [2021-11-25 18:23:49,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:49,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49159213] [2021-11-25 18:23:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:49,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:49,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:49,673 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:49,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-25 18:23:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:49,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:23:49,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:49,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:49,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:23:49,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49159213] [2021-11-25 18:23:49,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49159213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:49,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:49,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:49,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356113316] [2021-11-25 18:23:49,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:49,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:49,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:23:49,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:49,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:49,847 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:49,877 INFO L93 Difference]: Finished difference Result 231 states and 246 transitions. [2021-11-25 18:23:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:49,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-25 18:23:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:49,879 INFO L225 Difference]: With dead ends: 231 [2021-11-25 18:23:49,880 INFO L226 Difference]: Without dead ends: 231 [2021-11-25 18:23:49,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:49,881 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 56 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:49,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 250 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:23:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-25 18:23:49,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 188. [2021-11-25 18:23:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 155 states have (on average 1.2967741935483872) internal successors, (201), 187 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 201 transitions. [2021-11-25 18:23:49,892 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 201 transitions. Word has length 32 [2021-11-25 18:23:49,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:49,893 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 201 transitions. [2021-11-25 18:23:49,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 201 transitions. [2021-11-25 18:23:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 18:23:49,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:49,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:49,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:50,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:23:50,106 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:23:50,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1932608206, now seen corresponding path program 1 times [2021-11-25 18:23:50,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:23:50,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826053992] [2021-11-25 18:23:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:50,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:23:50,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:23:50,109 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:23:50,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-25 18:23:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:50,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 18:23:50,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:50,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:23:50,402 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 18:23:50,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-25 18:23:50,444 INFO L388 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 11 treesize of output 7 [2021-11-25 18:23:50,581 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:50,582 INFO L388 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 32 treesize of output 33 [2021-11-25 18:23:50,724 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:50,724 INFO L388 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 36 treesize of output 34 [2021-11-25 18:23:50,788 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:23:50,789 INFO L388 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 31 treesize of output 32 [2021-11-25 18:23:50,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-25 18:23:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:51,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:51,194 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_851 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_851) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (_ bv1 1)))) is different from false [2021-11-25 18:23:51,214 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_851 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_851) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))))) (_ bv1 1)))) is different from false [2021-11-25 18:23:51,225 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_851 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_851) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))))) (_ bv1 1)))) is different from false [2021-11-25 18:23:51,246 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_849 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_849))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_851)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))))) (_ bv1 1)))) is different from false [2021-11-25 18:23:51,262 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_849 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_849))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_851)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))))))))) is different from false [2021-11-25 18:23:51,281 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:51,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:23:51,298 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:51,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 188 treesize of output 175 [2021-11-25 18:23:51,325 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:23:51,326 INFO L388 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 160 treesize of output 158 [2021-11-25 18:23:51,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 146 [2021-11-25 18:24:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:11,177 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:24:11,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826053992] [2021-11-25 18:24:11,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826053992] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:24:11,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [611430315] [2021-11-25 18:24:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:11,178 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:24:11,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:24:11,179 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:24:11,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-11-25 18:24:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:11,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 18:24:11,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:24:11,442 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 18:24:11,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 19 [2021-11-25 18:24:11,584 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-25 18:24:11,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 48 [2021-11-25 18:24:11,681 INFO L388 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 11 treesize of output 7 [2021-11-25 18:24:11,908 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:11,908 INFO L388 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 41 treesize of output 40 [2021-11-25 18:24:12,254 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:12,255 INFO L388 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 44 treesize of output 40 [2021-11-25 18:24:12,342 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:12,342 INFO L388 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 43 treesize of output 42 [2021-11-25 18:24:12,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2021-11-25 18:24:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:12,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:24:13,216 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_904 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_904) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) (_ bv1 1)))) is different from false [2021-11-25 18:24:13,237 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_902 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_904 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_902))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_904)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))))) (_ bv1 1)))) is different from false [2021-11-25 18:24:13,255 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_902 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_904 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_902))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_904)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))))))) (_ bv1 1)))) is different from false [2021-11-25 18:24:13,275 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:13,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 45 [2021-11-25 18:24:13,294 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:13,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 364 treesize of output 339 [2021-11-25 18:24:13,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 324 treesize of output 316 [2021-11-25 18:24:13,332 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:13,332 INFO L388 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 316 treesize of output 308 [2021-11-25 18:24:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:30,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [611430315] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:24:30,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327125719] [2021-11-25 18:24:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:30,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:24:30,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:24:30,463 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:24:30,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-25 18:24:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:30,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 18:24:30,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:24:30,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:24:30,623 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-25 18:24:30,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-25 18:24:30,658 INFO L388 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 11 treesize of output 7 [2021-11-25 18:24:30,726 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:30,726 INFO L388 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 33 treesize of output 34 [2021-11-25 18:24:30,798 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:30,798 INFO L388 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 35 treesize of output 33 [2021-11-25 18:24:30,850 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:30,850 INFO L388 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 31 treesize of output 32 [2021-11-25 18:24:31,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-25 18:24:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:31,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:24:31,315 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_904 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_955 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_955))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_904)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) (_ bv1 1)))) is different from false [2021-11-25 18:24:31,332 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_904 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_955 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_955))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_904)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))))))) is different from false [2021-11-25 18:24:31,355 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:31,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 41 [2021-11-25 18:24:31,374 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:31,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 307 [2021-11-25 18:24:31,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 292 treesize of output 284 [2021-11-25 18:24:31,401 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:31,402 INFO L388 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 284 treesize of output 276 [2021-11-25 18:24:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:46,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327125719] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:24:46,853 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:24:46,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11, 12, 11, 12] total 40 [2021-11-25 18:24:46,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480035645] [2021-11-25 18:24:46,853 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:24:46,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-25 18:24:46,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:24:46,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-25 18:24:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=742, Unknown=20, NotChecked=670, Total=1640 [2021-11-25 18:24:46,856 INFO L87 Difference]: Start difference. First operand 188 states and 201 transitions. Second operand has 41 states, 40 states have (on average 3.25) internal successors, (130), 41 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:47,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:47,921 INFO L93 Difference]: Finished difference Result 313 states and 334 transitions. [2021-11-25 18:24:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:24:47,921 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 3.25) internal successors, (130), 41 states have internal predecessors, (130), 0 states have call successors, (0), 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 39 [2021-11-25 18:24:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:47,923 INFO L225 Difference]: With dead ends: 313 [2021-11-25 18:24:47,923 INFO L226 Difference]: Without dead ends: 313 [2021-11-25 18:24:47,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 179 SyntacticMatches, 15 SemanticMatches, 43 ConstructedPredicates, 10 IntricatePredicates, 3 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 41.3s TimeCoverageRelationStatistics Valid=275, Invalid=935, Unknown=20, NotChecked=750, Total=1980 [2021-11-25 18:24:47,925 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 183 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2043 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:47,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1650 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 371 Invalid, 0 Unknown, 2043 Unchecked, 0.6s Time] [2021-11-25 18:24:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-25 18:24:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 198. [2021-11-25 18:24:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 165 states have (on average 1.2969696969696969) internal successors, (214), 197 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 214 transitions. [2021-11-25 18:24:47,932 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 214 transitions. Word has length 39 [2021-11-25 18:24:47,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:47,932 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 214 transitions. [2021-11-25 18:24:47,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 3.25) internal successors, (130), 41 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:24:47,932 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 214 transitions. [2021-11-25 18:24:47,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 18:24:47,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:47,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:24:47,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-11-25 18:24:48,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-25 18:24:48,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-11-25 18:24:48,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 18:24:48,550 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-11-25 18:24:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:48,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1932608207, now seen corresponding path program 1 times [2021-11-25 18:24:48,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:24:48,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392996428] [2021-11-25 18:24:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:48,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:24:48,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:24:48,553 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:24:48,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-25 18:24:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:48,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 18:24:48,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:24:48,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:24:48,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:24:48,785 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:24:48,785 INFO L388 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 16 treesize of output 16 [2021-11-25 18:24:48,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:24:48,822 INFO L388 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 11 treesize of output 7 [2021-11-25 18:24:48,928 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:48,928 INFO L388 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 38 treesize of output 37 [2021-11-25 18:24:48,933 INFO L388 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 [2021-11-25 18:24:49,069 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:24:49,070 INFO L388 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 [2021-11-25 18:24:49,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:24:49,101 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:49,101 INFO L388 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 31 treesize of output 29 [2021-11-25 18:24:49,151 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:49,151 INFO L388 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 38 treesize of output 37 [2021-11-25 18:24:49,157 INFO L388 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 [2021-11-25 18:24:49,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:24:49,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:24:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:49,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:24:49,853 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1015 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1015) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_1014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1015 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1015) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1014) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-25 18:24:49,911 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1015 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1015) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_1014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1015 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1015) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1014) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-25 18:24:49,949 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1015 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_1015) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_1014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1015 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1015) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1014) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) is different from false [2021-11-25 18:24:50,168 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1015 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1010))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1011) .cse0 v_ArrVal_1015) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1014) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))) (forall ((v_ArrVal_1010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1015 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1011) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1010) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_1015) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))) is different from false [2021-11-25 18:24:50,346 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1015 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1011) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1010) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_1015)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_1010 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1011 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1014 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1015 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1010))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1011) .cse3 v_ArrVal_1015) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_1014) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))))) is different from false [2021-11-25 18:24:50,386 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:50,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2021-11-25 18:24:50,397 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:50,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 50 [2021-11-25 18:24:50,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 72 [2021-11-25 18:24:50,441 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:50,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 215 [2021-11-25 18:24:50,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 158 [2021-11-25 18:24:50,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 172 [2021-11-25 18:24:50,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 130 [2021-11-25 18:24:50,899 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:50,899 INFO L388 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 73 treesize of output 74 [2021-11-25 18:24:50,923 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:50,924 INFO L388 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 65 treesize of output 50 [2021-11-25 18:24:50,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:50,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:50,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 50 [2021-11-25 18:24:50,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:50,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-11-25 18:24:50,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-25 18:24:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:51,249 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:24:51,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392996428] [2021-11-25 18:24:51,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392996428] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:24:51,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [540089809] [2021-11-25 18:24:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:51,250 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:24:51,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:24:51,251 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:24:51,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2021-11-25 18:24:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:51,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 18:24:51,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:24:51,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:24:51,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:24:51,706 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:24:51,706 INFO L388 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 15 treesize of output 15 [2021-11-25 18:24:51,780 INFO L388 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 11 treesize of output 7 [2021-11-25 18:24:51,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:24:51,989 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:51,989 INFO L388 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 38 treesize of output 37 [2021-11-25 18:24:52,008 INFO L388 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 [2021-11-25 18:24:52,264 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:52,265 INFO L388 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 31 treesize of output 29 [2021-11-25 18:24:52,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:24:52,279 INFO L388 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 [2021-11-25 18:24:52,330 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:52,330 INFO L388 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 38 treesize of output 37 [2021-11-25 18:24:52,336 INFO L388 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 [2021-11-25 18:24:52,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:24:52,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2021-11-25 18:24:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:52,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:24:52,916 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1073 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1072) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1073) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1072) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32)))))) is different from false [2021-11-25 18:24:52,970 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1072) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1073 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1072) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1073) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-25 18:24:53,005 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1073 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1072) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1073) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_1072) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd .cse1 (_ bv8 32)) (bvadd .cse1 (_ bv12 32)))))) is different from false [2021-11-25 18:24:53,060 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1068 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1069 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1068) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1069) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_1072) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1073 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1068 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1069 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1069))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1068) .cse1 v_ArrVal_1072) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1073) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) is different from false [2021-11-25 18:24:53,102 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1068 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1069 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1068) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1069) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_1072)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_1072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1073 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1068 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1069 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1069))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1068) .cse3 v_ArrVal_1072) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_1073) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))))) is different from false [2021-11-25 18:24:53,153 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:53,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2021-11-25 18:24:53,165 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:53,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 50 [2021-11-25 18:24:53,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 72 [2021-11-25 18:24:53,208 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:53,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 131 [2021-11-25 18:24:53,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 74 [2021-11-25 18:24:53,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 96 [2021-11-25 18:24:53,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2021-11-25 18:24:53,592 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:53,593 INFO L388 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 73 treesize of output 74 [2021-11-25 18:24:53,616 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:53,617 INFO L388 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 65 treesize of output 50 [2021-11-25 18:24:53,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:53,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:53,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 50 [2021-11-25 18:24:53,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:24:53,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-11-25 18:24:53,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2021-11-25 18:24:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:53,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [540089809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:24:53,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178123359] [2021-11-25 18:24:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:53,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:24:53,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:24:53,814 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:24:53,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_169c7bc4-f52e-45c5-87c5-a561e2b2863a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-25 18:24:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:53,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-25 18:24:53,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:24:53,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:24:54,013 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:24:54,014 INFO L388 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 15 treesize of output 15 [2021-11-25 18:24:54,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:24:54,053 INFO L388 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 11 treesize of output 7 [2021-11-25 18:24:54,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:24:54,150 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:54,150 INFO L388 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 38 treesize of output 37 [2021-11-25 18:24:54,157 INFO L388 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 [2021-11-25 18:24:54,269 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:24:54,269 INFO L388 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 [2021-11-25 18:24:54,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:24:54,319 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:54,319 INFO L388 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 31 treesize of output 29 [2021-11-25 18:24:54,399 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:24:54,400 INFO L388 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 38 treesize of output 37 [2021-11-25 18:24:54,406 INFO L388 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 [2021-11-25 18:24:54,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:24:54,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 18:24:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:54,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:24:54,934 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1131 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1130) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1131) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_1130 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_1130) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32)))))) is different from false [2021-11-25 18:24:54,987 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1131 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1130) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1131) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((v_ArrVal_1130 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1130) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32)))))) is different from false [2021-11-25 18:24:55,017 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1131 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1130) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1131) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (forall ((v_ArrVal_1130 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_1130) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd .cse1 (_ bv8 32)) (bvadd .cse1 (_ bv12 32)))))) is different from false [2021-11-25 18:24:55,073 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1127 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1126) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1127) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_1130) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_1130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1127 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1127))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_1126) .cse1 v_ArrVal_1130) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1131) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) is different from false [2021-11-25 18:24:55,146 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1127 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_1126) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_1127) |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_1130)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_1130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1126 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1127 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1127))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1126) .cse3 v_ArrVal_1130) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_1131) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))))))) is different from false [2021-11-25 18:24:55,201 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:55,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2021-11-25 18:24:55,214 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:55,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2021-11-25 18:24:55,251 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:55,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 334 treesize of output 301 [2021-11-25 18:24:55,290 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:55,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 598 treesize of output 573 [2021-11-25 18:24:55,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 558 treesize of output 534 [2021-11-25 18:24:55,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 534 treesize of output 510 [2021-11-25 18:24:55,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 510 treesize of output 502 [2021-11-25 18:24:55,361 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:24:55,362 INFO L388 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 502 treesize of output 458