./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b77f3a84818afa598b0eb39254acb84b353143275f6b4c2e95d15ee5488d008 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:44:49,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:44:49,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:44:49,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:44:49,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:44:49,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:44:49,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:44:49,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:44:49,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:44:49,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:44:49,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:44:49,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:44:49,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:44:49,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:44:49,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:44:49,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:44:49,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:44:49,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:44:49,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:44:49,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:44:49,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:44:49,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:44:49,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:44:49,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:44:49,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:44:49,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:44:49,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:44:49,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:44:49,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:44:49,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:44:49,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:44:49,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:44:49,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:44:49,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:44:49,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:44:49,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:44:49,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:44:49,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:44:49,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:44:49,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:44:49,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:44:49,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:44:49,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:44:49,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:44:49,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:44:49,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:44:49,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:44:49,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:44:49,465 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:44:49,465 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:44:49,466 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:44:49,466 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:44:49,466 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:44:49,466 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:44:49,466 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:44:49,467 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:44:49,467 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:44:49,467 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:44:49,467 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:44:49,468 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:44:49,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:44:49,469 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:44:49,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:44:49,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:44:49,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:44:49,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:44:49,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:44:49,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:44:49,470 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:44:49,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:44:49,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:44:49,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:44:49,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:44:49,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:44:49,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:44:49,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:44:49,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:44:49,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:44:49,472 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:44:49,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:44:49,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:44:49,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:44:49,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:44:49,473 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b77f3a84818afa598b0eb39254acb84b353143275f6b4c2e95d15ee5488d008 [2021-11-23 16:44:49,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:44:49,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:44:49,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:44:49,740 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:44:49,741 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:44:49,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-23 16:44:49,825 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/data/fcb9c39ba/175f50a1c4694ca595712cb2e6fdd93c/FLAG1768938ed [2021-11-23 16:44:50,628 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:44:50,628 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-23 16:44:50,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/data/fcb9c39ba/175f50a1c4694ca595712cb2e6fdd93c/FLAG1768938ed [2021-11-23 16:44:51,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/data/fcb9c39ba/175f50a1c4694ca595712cb2e6fdd93c [2021-11-23 16:44:51,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:44:51,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:44:51,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:44:51,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:44:51,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:44:51,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2615bf53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51, skipping insertion in model container [2021-11-23 16:44:51,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:44:51,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:44:52,047 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2021-11-23 16:44:52,095 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2021-11-23 16:44:52,122 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2021-11-23 16:44:52,137 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-23 16:44:52,164 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2021-11-23 16:44:52,176 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2021-11-23 16:44:52,192 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2021-11-23 16:44:52,215 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2021-11-23 16:44:52,223 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2021-11-23 16:44:52,232 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2021-11-23 16:44:52,247 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2021-11-23 16:44:52,274 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2021-11-23 16:44:52,281 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2021-11-23 16:44:52,290 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2021-11-23 16:44:52,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2021-11-23 16:44:52,326 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2021-11-23 16:44:52,363 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2021-11-23 16:44:52,370 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2021-11-23 16:44:52,379 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2021-11-23 16:44:52,393 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2021-11-23 16:44:52,418 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2021-11-23 16:44:52,458 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2021-11-23 16:44:52,526 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2021-11-23 16:44:52,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2021-11-23 16:44:52,540 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2021-11-23 16:44:52,554 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2021-11-23 16:44:52,576 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2021-11-23 16:44:52,607 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2021-11-23 16:44:52,656 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2021-11-23 16:44:53,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:44:53,603 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:44:53,734 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2021-11-23 16:44:53,752 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2021-11-23 16:44:53,760 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2021-11-23 16:44:53,766 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-23 16:44:53,775 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2021-11-23 16:44:53,780 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2021-11-23 16:44:53,787 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2021-11-23 16:44:53,800 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2021-11-23 16:44:53,805 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2021-11-23 16:44:53,812 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2021-11-23 16:44:53,823 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2021-11-23 16:44:53,842 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2021-11-23 16:44:53,848 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2021-11-23 16:44:53,854 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2021-11-23 16:44:53,865 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2021-11-23 16:44:53,882 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2021-11-23 16:44:53,911 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2021-11-23 16:44:53,917 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2021-11-23 16:44:53,923 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2021-11-23 16:44:53,934 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2021-11-23 16:44:53,953 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2021-11-23 16:44:53,985 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2021-11-23 16:44:54,039 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2021-11-23 16:44:54,045 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2021-11-23 16:44:54,051 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2021-11-23 16:44:54,062 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2021-11-23 16:44:54,079 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2021-11-23 16:44:54,105 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2021-11-23 16:44:54,145 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2021-11-23 16:44:54,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:44:54,873 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:44:54,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54 WrapperNode [2021-11-23 16:44:54,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:44:54,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:44:54,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:44:54,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:44:54,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54" (1/1) ... [2021-11-23 16:44:54,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54" (1/1) ... [2021-11-23 16:44:55,211 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12087 [2021-11-23 16:44:55,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:44:55,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:44:55,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:44:55,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:44:55,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54" (1/1) ... [2021-11-23 16:44:55,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54" (1/1) ... [2021-11-23 16:44:55,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54" (1/1) ... [2021-11-23 16:44:55,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54" (1/1) ... [2021-11-23 16:44:55,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54" (1/1) ... [2021-11-23 16:44:55,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54" (1/1) ... [2021-11-23 16:44:55,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54" (1/1) ... [2021-11-23 16:44:55,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:44:55,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:44:55,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:44:55,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:44:55,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:54" (1/1) ... [2021-11-23 16:44:55,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:44:55,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:44:55,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:44:55,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:44:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:44:55,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:44:55,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:44:55,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:44:56,012 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:44:56,014 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:01,540 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:01,710 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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) [2021-11-23 16:45:01,715 INFO L158 Benchmark]: Toolchain (without parser) took 10506.11ms. Allocated memory was 121.6MB in the beginning and 398.5MB in the end (delta: 276.8MB). Free memory was 94.9MB in the beginning and 291.1MB in the end (delta: -196.2MB). Peak memory consumption was 297.6MB. Max. memory is 16.1GB. [2021-11-23 16:45:01,715 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 96.5MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:45:01,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3664.44ms. Allocated memory was 121.6MB in the beginning and 178.3MB in the end (delta: 56.6MB). Free memory was 94.9MB in the beginning and 92.6MB in the end (delta: 2.3MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. [2021-11-23 16:45:01,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 336.84ms. Allocated memory is still 178.3MB. Free memory was 92.6MB in the beginning and 101.3MB in the end (delta: -8.7MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2021-11-23 16:45:01,717 INFO L158 Benchmark]: Boogie Preprocessor took 274.69ms. Allocated memory is still 178.3MB. Free memory was 101.3MB in the beginning and 76.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-23 16:45:01,718 INFO L158 Benchmark]: RCFGBuilder took 6224.65ms. Allocated memory was 178.3MB in the beginning and 398.5MB in the end (delta: 220.2MB). Free memory was 76.1MB in the beginning and 291.1MB in the end (delta: -214.9MB). Peak memory consumption was 222.6MB. Max. memory is 16.1GB. [2021-11-23 16:45:01,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 96.5MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3664.44ms. Allocated memory was 121.6MB in the beginning and 178.3MB in the end (delta: 56.6MB). Free memory was 94.9MB in the beginning and 92.6MB in the end (delta: 2.3MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 336.84ms. Allocated memory is still 178.3MB. Free memory was 92.6MB in the beginning and 101.3MB in the end (delta: -8.7MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 274.69ms. Allocated memory is still 178.3MB. Free memory was 101.3MB in the beginning and 76.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * RCFGBuilder took 6224.65ms. Allocated memory was 178.3MB in the beginning and 398.5MB in the end (delta: 220.2MB). Free memory was 76.1MB in the beginning and 291.1MB in the end (delta: -214.9MB). Peak memory consumption was 222.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:45:01,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b77f3a84818afa598b0eb39254acb84b353143275f6b4c2e95d15ee5488d008 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:45:04,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:45:04,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:45:04,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:45:04,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:45:04,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:45:04,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:45:04,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:45:04,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:45:04,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:45:04,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:45:04,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:45:04,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:45:04,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:45:04,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:45:04,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:45:04,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:45:04,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:45:04,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:45:04,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:45:04,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:45:04,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:45:04,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:45:04,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:45:04,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:45:04,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:45:04,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:45:04,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:45:04,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:45:04,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:45:04,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:45:04,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:45:04,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:45:04,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:45:04,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:45:04,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:45:04,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:45:04,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:45:04,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:45:04,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:45:04,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:45:04,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:45:04,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:45:04,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:45:04,389 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:45:04,389 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:45:04,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:45:04,390 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:45:04,391 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:45:04,391 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:45:04,391 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:45:04,391 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:45:04,392 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:45:04,392 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:45:04,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:45:04,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:45:04,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:45:04,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:45:04,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:45:04,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:45:04,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:45:04,394 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:45:04,394 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:45:04,394 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:45:04,394 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:45:04,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:45:04,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:45:04,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:45:04,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:45:04,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:45:04,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:45:04,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:04,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:45:04,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:45:04,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:45:04,396 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:45:04,396 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:45:04,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:45:04,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:45:04,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:45:04,397 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b77f3a84818afa598b0eb39254acb84b353143275f6b4c2e95d15ee5488d008 [2021-11-23 16:45:04,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:45:04,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:45:04,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:45:04,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:45:04,816 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:45:04,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-23 16:45:04,899 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/data/78a37ac0e/159c3312ce634fd2b604b66bea2ce357/FLAGca93c84aa [2021-11-23 16:45:05,814 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:45:05,815 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-23 16:45:05,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/data/78a37ac0e/159c3312ce634fd2b604b66bea2ce357/FLAGca93c84aa [2021-11-23 16:45:06,254 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/data/78a37ac0e/159c3312ce634fd2b604b66bea2ce357 [2021-11-23 16:45:06,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:45:06,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:45:06,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:06,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:45:06,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:45:06,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:06" (1/1) ... [2021-11-23 16:45:06,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ebd52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:06, skipping insertion in model container [2021-11-23 16:45:06,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:45:06" (1/1) ... [2021-11-23 16:45:06,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:45:06,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:45:07,273 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2021-11-23 16:45:07,370 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2021-11-23 16:45:07,384 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2021-11-23 16:45:07,393 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-23 16:45:07,421 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2021-11-23 16:45:07,429 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2021-11-23 16:45:07,440 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2021-11-23 16:45:07,463 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2021-11-23 16:45:07,472 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2021-11-23 16:45:07,483 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2021-11-23 16:45:07,502 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2021-11-23 16:45:07,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2021-11-23 16:45:07,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2021-11-23 16:45:07,558 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2021-11-23 16:45:07,576 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2021-11-23 16:45:07,611 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2021-11-23 16:45:07,681 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2021-11-23 16:45:07,688 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2021-11-23 16:45:07,703 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2021-11-23 16:45:07,719 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2021-11-23 16:45:07,747 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2021-11-23 16:45:07,816 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2021-11-23 16:45:07,911 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2021-11-23 16:45:07,924 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2021-11-23 16:45:07,934 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2021-11-23 16:45:07,953 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2021-11-23 16:45:07,983 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2021-11-23 16:45:08,026 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2021-11-23 16:45:08,092 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2021-11-23 16:45:09,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:09,245 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:45:09,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16849,16862] [2021-11-23 16:45:09,444 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21942,21955] [2021-11-23 16:45:09,455 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[23299,23312] [2021-11-23 16:45:09,462 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24107,24120] [2021-11-23 16:45:09,474 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25792,25805] [2021-11-23 16:45:09,482 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26600,26613] [2021-11-23 16:45:09,490 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27736,27749] [2021-11-23 16:45:09,509 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30390,30403] [2021-11-23 16:45:09,517 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[31201,31214] [2021-11-23 16:45:09,526 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32340,32353] [2021-11-23 16:45:09,558 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34445,34458] [2021-11-23 16:45:09,584 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38533,38546] [2021-11-23 16:45:09,591 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[39344,39357] [2021-11-23 16:45:09,600 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[40483,40496] [2021-11-23 16:45:09,615 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[42588,42601] [2021-11-23 16:45:09,639 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[46127,46140] [2021-11-23 16:45:09,680 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[52573,52586] [2021-11-23 16:45:09,688 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53384,53397] [2021-11-23 16:45:09,698 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[54527,54540] [2021-11-23 16:45:09,714 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[56636,56649] [2021-11-23 16:45:09,741 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[60424,60437] [2021-11-23 16:45:09,782 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[67072,67085] [2021-11-23 16:45:09,853 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[79206,79219] [2021-11-23 16:45:09,860 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[80017,80030] [2021-11-23 16:45:09,868 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[81156,81169] [2021-11-23 16:45:09,882 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[83261,83274] [2021-11-23 16:45:09,904 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[86800,86813] [2021-11-23 16:45:09,949 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[92697,92710] [2021-11-23 16:45:10,006 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_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[102772,102785] [2021-11-23 16:45:10,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:45:10,965 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:45:10,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10 WrapperNode [2021-11-23 16:45:10,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:45:10,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:10,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:45:10,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:45:10,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (1/1) ... [2021-11-23 16:45:11,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (1/1) ... [2021-11-23 16:45:11,328 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12066 [2021-11-23 16:45:11,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:45:11,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:45:11,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:45:11,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:45:11,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (1/1) ... [2021-11-23 16:45:11,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (1/1) ... [2021-11-23 16:45:11,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (1/1) ... [2021-11-23 16:45:11,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (1/1) ... [2021-11-23 16:45:11,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (1/1) ... [2021-11-23 16:45:11,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (1/1) ... [2021-11-23 16:45:11,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (1/1) ... [2021-11-23 16:45:11,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:45:11,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:45:11,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:45:11,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:45:11,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (1/1) ... [2021-11-23 16:45:11,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:45:11,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:45:11,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:45:11,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:45:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:45:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:45:11,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:45:11,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:45:12,499 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:45:12,501 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:45:21,931 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:45:21,963 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:45:21,963 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 16:45:21,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:21 BoogieIcfgContainer [2021-11-23 16:45:21,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:45:21,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:45:21,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:45:21,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:45:21,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:45:06" (1/3) ... [2021-11-23 16:45:21,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e753150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:21, skipping insertion in model container [2021-11-23 16:45:21,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:45:10" (2/3) ... [2021-11-23 16:45:21,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e753150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:45:21, skipping insertion in model container [2021-11-23 16:45:21,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:45:21" (3/3) ... [2021-11-23 16:45:21,978 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-23 16:45:21,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:45:21,983 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-23 16:45:22,043 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:45:22,050 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 16:45:22,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-23 16:45:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 2064 states, 2034 states have (on average 1.867748279252704) internal successors, (3799), 2063 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-23 16:45:22,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:22,220 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:22,221 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:22,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:22,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1776091410, now seen corresponding path program 1 times [2021-11-23 16:45:22,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:22,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475693194] [2021-11-23 16:45:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:22,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:22,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:22,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:22,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:45:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:22,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 16:45:22,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:24,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:24,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:24,053 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:24,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475693194] [2021-11-23 16:45:24,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475693194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:24,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:24,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:45:24,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396682926] [2021-11-23 16:45:24,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:24,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:45:24,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:24,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:45:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:45:24,113 INFO L87 Difference]: Start difference. First operand has 2064 states, 2034 states have (on average 1.867748279252704) internal successors, (3799), 2063 states have internal predecessors, (3799), 0 states have call successors, (0), 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 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:25,777 INFO L93 Difference]: Finished difference Result 3066 states and 5460 transitions. [2021-11-23 16:45:25,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:45:25,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-23 16:45:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:25,803 INFO L225 Difference]: With dead ends: 3066 [2021-11-23 16:45:25,803 INFO L226 Difference]: Without dead ends: 1552 [2021-11-23 16:45:25,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 16:45:25,814 INFO L933 BasicCegarLoop]: 2749 mSDtfsCounter, 208 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 4553 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:25,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 4553 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 893 Invalid, 0 Unknown, 17 Unchecked, 1.4s Time] [2021-11-23 16:45:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2021-11-23 16:45:25,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1552. [2021-11-23 16:45:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1523 states have (on average 1.3315824031516743) internal successors, (2028), 1551 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2028 transitions. [2021-11-23 16:45:25,930 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2028 transitions. Word has length 100 [2021-11-23 16:45:25,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:25,930 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 2028 transitions. [2021-11-23 16:45:25,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2028 transitions. [2021-11-23 16:45:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-23 16:45:25,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:25,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:25,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:26,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:26,163 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1108678289, now seen corresponding path program 1 times [2021-11-23 16:45:26,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:26,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511974423] [2021-11-23 16:45:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:26,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:26,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:26,169 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:26,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 16:45:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:26,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 16:45:26,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:27,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:27,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511974423] [2021-11-23 16:45:27,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511974423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:27,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:27,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:45:27,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109064960] [2021-11-23 16:45:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:27,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:45:27,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:27,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:45:27,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:45:27,355 INFO L87 Difference]: Start difference. First operand 1552 states and 2028 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:28,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:28,444 INFO L93 Difference]: Finished difference Result 2539 states and 3428 transitions. [2021-11-23 16:45:28,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:45:28,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-23 16:45:28,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:28,454 INFO L225 Difference]: With dead ends: 2539 [2021-11-23 16:45:28,454 INFO L226 Difference]: Without dead ends: 1299 [2021-11-23 16:45:28,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 16:45:28,458 INFO L933 BasicCegarLoop]: 1737 mSDtfsCounter, 68 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 744 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:28,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 3675 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 731 Invalid, 0 Unknown, 744 Unchecked, 1.0s Time] [2021-11-23 16:45:28,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2021-11-23 16:45:28,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1299. [2021-11-23 16:45:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1270 states have (on average 1.3724409448818897) internal successors, (1743), 1298 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1743 transitions. [2021-11-23 16:45:28,500 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1743 transitions. Word has length 101 [2021-11-23 16:45:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:28,500 INFO L470 AbstractCegarLoop]: Abstraction has 1299 states and 1743 transitions. [2021-11-23 16:45:28,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1743 transitions. [2021-11-23 16:45:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-23 16:45:28,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:28,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:28,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:28,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:28,718 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash -484164301, now seen corresponding path program 1 times [2021-11-23 16:45:28,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:28,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769229970] [2021-11-23 16:45:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:28,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:28,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:28,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:28,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 16:45:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:29,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 16:45:29,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:29,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:29,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:29,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769229970] [2021-11-23 16:45:29,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769229970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:29,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:29,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:45:29,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736977861] [2021-11-23 16:45:29,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:29,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:45:29,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:29,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:45:29,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:45:29,817 INFO L87 Difference]: Start difference. First operand 1299 states and 1743 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:30,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:30,784 INFO L93 Difference]: Finished difference Result 2286 states and 3143 transitions. [2021-11-23 16:45:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:45:30,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-23 16:45:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:30,792 INFO L225 Difference]: With dead ends: 2286 [2021-11-23 16:45:30,792 INFO L226 Difference]: Without dead ends: 1174 [2021-11-23 16:45:30,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 16:45:30,796 INFO L933 BasicCegarLoop]: 1594 mSDtfsCounter, 62 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:30,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 2491 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 683 Invalid, 0 Unknown, 14 Unchecked, 0.9s Time] [2021-11-23 16:45:30,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-11-23 16:45:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2021-11-23 16:45:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1145 states have (on average 1.3991266375545852) internal successors, (1602), 1173 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1602 transitions. [2021-11-23 16:45:30,830 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1602 transitions. Word has length 102 [2021-11-23 16:45:30,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:30,830 INFO L470 AbstractCegarLoop]: Abstraction has 1174 states and 1602 transitions. [2021-11-23 16:45:30,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:30,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1602 transitions. [2021-11-23 16:45:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 16:45:30,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:30,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:30,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-23 16:45:31,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:31,051 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:31,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1661736976, now seen corresponding path program 1 times [2021-11-23 16:45:31,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:31,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680982319] [2021-11-23 16:45:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:31,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:31,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:31,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:31,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 16:45:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:31,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 16:45:31,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:32,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:32,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:32,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680982319] [2021-11-23 16:45:32,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680982319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:32,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:32,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:45:32,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275699305] [2021-11-23 16:45:32,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:32,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:45:32,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:32,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:45:32,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:45:32,164 INFO L87 Difference]: Start difference. First operand 1174 states and 1602 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:33,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:33,067 INFO L93 Difference]: Finished difference Result 2161 states and 3002 transitions. [2021-11-23 16:45:33,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:45:33,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-23 16:45:33,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:33,076 INFO L225 Difference]: With dead ends: 2161 [2021-11-23 16:45:33,076 INFO L226 Difference]: Without dead ends: 1113 [2021-11-23 16:45:33,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 16:45:33,080 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 56 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:33,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 2380 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 659 Invalid, 0 Unknown, 16 Unchecked, 0.8s Time] [2021-11-23 16:45:33,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2021-11-23 16:45:33,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1113. [2021-11-23 16:45:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1084 states have (on average 1.4142066420664208) internal successors, (1533), 1112 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1533 transitions. [2021-11-23 16:45:33,134 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1533 transitions. Word has length 103 [2021-11-23 16:45:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:33,135 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1533 transitions. [2021-11-23 16:45:33,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:33,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1533 transitions. [2021-11-23 16:45:33,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-23 16:45:33,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:33,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:33,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-23 16:45:33,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:33,352 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:33,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:33,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1132801964, now seen corresponding path program 1 times [2021-11-23 16:45:33,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:33,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69021955] [2021-11-23 16:45:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:33,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:33,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:33,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:33,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 16:45:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:33,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 16:45:33,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:34,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:34,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:34,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69021955] [2021-11-23 16:45:34,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69021955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:34,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:34,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:45:34,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766864134] [2021-11-23 16:45:34,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:34,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:45:34,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:34,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:45:34,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:45:34,410 INFO L87 Difference]: Start difference. First operand 1113 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 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) [2021-11-23 16:45:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:35,714 INFO L93 Difference]: Finished difference Result 2100 states and 2933 transitions. [2021-11-23 16:45:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:45:35,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 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 104 [2021-11-23 16:45:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:35,722 INFO L225 Difference]: With dead ends: 2100 [2021-11-23 16:45:35,722 INFO L226 Difference]: Without dead ends: 1084 [2021-11-23 16:45:35,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 16:45:35,728 INFO L933 BasicCegarLoop]: 1488 mSDtfsCounter, 37 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3836 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 680 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:35,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 3836 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1344 Invalid, 0 Unknown, 680 Unchecked, 1.2s Time] [2021-11-23 16:45:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-11-23 16:45:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1084. [2021-11-23 16:45:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1055 states have (on average 1.4218009478672986) internal successors, (1500), 1083 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1500 transitions. [2021-11-23 16:45:35,764 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1500 transitions. Word has length 104 [2021-11-23 16:45:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:35,766 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 1500 transitions. [2021-11-23 16:45:35,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 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) [2021-11-23 16:45:35,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1500 transitions. [2021-11-23 16:45:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 16:45:35,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:35,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:35,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:35,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:35,982 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:35,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:35,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2033582449, now seen corresponding path program 1 times [2021-11-23 16:45:35,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:35,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125764786] [2021-11-23 16:45:35,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:35,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:35,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:35,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:36,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 16:45:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:36,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 16:45:36,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:36,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:36,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:36,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125764786] [2021-11-23 16:45:36,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125764786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:36,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:36,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:45:36,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073263512] [2021-11-23 16:45:36,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:36,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:45:36,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:36,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:45:36,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:45:36,946 INFO L87 Difference]: Start difference. First operand 1084 states and 1500 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 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) [2021-11-23 16:45:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:38,206 INFO L93 Difference]: Finished difference Result 2071 states and 2900 transitions. [2021-11-23 16:45:38,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:45:38,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 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 105 [2021-11-23 16:45:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:38,214 INFO L225 Difference]: With dead ends: 2071 [2021-11-23 16:45:38,214 INFO L226 Difference]: Without dead ends: 1071 [2021-11-23 16:45:38,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 16:45:38,217 INFO L933 BasicCegarLoop]: 1471 mSDtfsCounter, 29 mSDsluCounter, 2255 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 692 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:38,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 3726 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1381 Invalid, 0 Unknown, 692 Unchecked, 1.2s Time] [2021-11-23 16:45:38,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2021-11-23 16:45:38,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1071. [2021-11-23 16:45:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1042 states have (on average 1.4251439539347408) internal successors, (1485), 1070 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:38,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1485 transitions. [2021-11-23 16:45:38,254 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1485 transitions. Word has length 105 [2021-11-23 16:45:38,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:38,255 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 1485 transitions. [2021-11-23 16:45:38,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 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) [2021-11-23 16:45:38,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1485 transitions. [2021-11-23 16:45:38,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 16:45:38,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:38,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:38,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:38,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:38,477 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:38,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1060393355, now seen corresponding path program 1 times [2021-11-23 16:45:38,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:38,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684294618] [2021-11-23 16:45:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:38,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:38,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:38,479 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:38,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 16:45:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:38,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 16:45:38,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:39,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:39,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:39,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684294618] [2021-11-23 16:45:39,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684294618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:39,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:39,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:45:39,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587010741] [2021-11-23 16:45:39,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:39,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:45:39,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:39,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:45:39,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:45:39,450 INFO L87 Difference]: Start difference. First operand 1071 states and 1485 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 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) [2021-11-23 16:45:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:40,675 INFO L93 Difference]: Finished difference Result 2058 states and 2885 transitions. [2021-11-23 16:45:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 16:45:40,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 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 106 [2021-11-23 16:45:40,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:40,683 INFO L225 Difference]: With dead ends: 2058 [2021-11-23 16:45:40,683 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:45:40,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 16:45:40,686 INFO L933 BasicCegarLoop]: 1463 mSDtfsCounter, 26 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 722 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:40,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 3554 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1498 Invalid, 0 Unknown, 722 Unchecked, 1.2s Time] [2021-11-23 16:45:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:45:40,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:45:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4262295081967213) internal successors, (1479), 1065 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1479 transitions. [2021-11-23 16:45:40,717 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1479 transitions. Word has length 106 [2021-11-23 16:45:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:40,717 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1479 transitions. [2021-11-23 16:45:40,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 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) [2021-11-23 16:45:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1479 transitions. [2021-11-23 16:45:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 16:45:40,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:40,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:40,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:40,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:40,938 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1619061170, now seen corresponding path program 1 times [2021-11-23 16:45:40,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:40,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98129884] [2021-11-23 16:45:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:40,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:40,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:40,940 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:40,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 16:45:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:41,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:45:41,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:42,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:42,719 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:42,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98129884] [2021-11-23 16:45:42,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98129884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:42,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:42,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:45:42,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447239975] [2021-11-23 16:45:42,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:42,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:45:42,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:42,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:45:42,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:45:42,767 INFO L87 Difference]: Start difference. First operand 1066 states and 1479 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-23 16:45:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:42,841 INFO L93 Difference]: Finished difference Result 1368 states and 1921 transitions. [2021-11-23 16:45:42,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:45:42,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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 107 [2021-11-23 16:45:42,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:42,849 INFO L225 Difference]: With dead ends: 1368 [2021-11-23 16:45:42,849 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:45:42,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:45:42,852 INFO L933 BasicCegarLoop]: 1455 mSDtfsCounter, 62 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 4742 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1927 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:42,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 4742 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 1927 Unchecked, 0.0s Time] [2021-11-23 16:45:42,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:45:42,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:45:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.42526518804243) internal successors, (1478), 1065 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1478 transitions. [2021-11-23 16:45:42,888 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1478 transitions. Word has length 107 [2021-11-23 16:45:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:42,888 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1478 transitions. [2021-11-23 16:45:42,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-23 16:45:42,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1478 transitions. [2021-11-23 16:45:42,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 16:45:42,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:42,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:42,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:43,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:43,109 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:43,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:43,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1690715753, now seen corresponding path program 1 times [2021-11-23 16:45:43,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:43,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290643845] [2021-11-23 16:45:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:43,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:43,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:43,112 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:43,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 16:45:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:43,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:45:43,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:44,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:44,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:44,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290643845] [2021-11-23 16:45:44,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290643845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:44,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:44,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:45:44,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923570600] [2021-11-23 16:45:44,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:44,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:45:44,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:44,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:45:44,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:45:44,866 INFO L87 Difference]: Start difference. First operand 1066 states and 1478 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-23 16:45:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:45,585 INFO L93 Difference]: Finished difference Result 1246 states and 1750 transitions. [2021-11-23 16:45:45,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:45:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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 107 [2021-11-23 16:45:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:45,592 INFO L225 Difference]: With dead ends: 1246 [2021-11-23 16:45:45,592 INFO L226 Difference]: Without dead ends: 1067 [2021-11-23 16:45:45,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:45:45,594 INFO L933 BasicCegarLoop]: 1449 mSDtfsCounter, 93 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:45,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 2458 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 624 Invalid, 0 Unknown, 46 Unchecked, 0.7s Time] [2021-11-23 16:45:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-11-23 16:45:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1066. [2021-11-23 16:45:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4243008678881388) internal successors, (1477), 1065 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1477 transitions. [2021-11-23 16:45:45,626 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1477 transitions. Word has length 107 [2021-11-23 16:45:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:45,626 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1477 transitions. [2021-11-23 16:45:45,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 7 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) [2021-11-23 16:45:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1477 transitions. [2021-11-23 16:45:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 16:45:45,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:45,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:45,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-23 16:45:45,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:45,845 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:45,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:45,846 INFO L85 PathProgramCache]: Analyzing trace with hash 64636340, now seen corresponding path program 1 times [2021-11-23 16:45:45,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:45,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416559745] [2021-11-23 16:45:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:45,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:45,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:45,848 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:45,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 16:45:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:46,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 16:45:46,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:46,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:46,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:46,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416559745] [2021-11-23 16:45:46,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416559745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:46,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:46,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 16:45:46,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196312140] [2021-11-23 16:45:46,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:46,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 16:45:46,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 16:45:46,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 16:45:46,997 INFO L87 Difference]: Start difference. First operand 1066 states and 1477 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 6 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) [2021-11-23 16:45:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:48,201 INFO L93 Difference]: Finished difference Result 1644 states and 2281 transitions. [2021-11-23 16:45:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:45:48,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 6 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 107 [2021-11-23 16:45:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:48,208 INFO L225 Difference]: With dead ends: 1644 [2021-11-23 16:45:48,208 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:45:48,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:45:48,211 INFO L933 BasicCegarLoop]: 1456 mSDtfsCounter, 37 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3722 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 660 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:48,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 3722 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1484 Invalid, 0 Unknown, 660 Unchecked, 1.1s Time] [2021-11-23 16:45:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:45:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:45:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4233365477338475) internal successors, (1476), 1065 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1476 transitions. [2021-11-23 16:45:48,244 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1476 transitions. Word has length 107 [2021-11-23 16:45:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:48,244 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1476 transitions. [2021-11-23 16:45:48,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 6 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) [2021-11-23 16:45:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1476 transitions. [2021-11-23 16:45:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 16:45:48,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:48,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:48,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-23 16:45:48,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:48,462 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:48,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:48,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1267119622, now seen corresponding path program 1 times [2021-11-23 16:45:48,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:48,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138830388] [2021-11-23 16:45:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:48,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:48,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:48,464 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:48,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 16:45:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:48,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:45:48,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:50,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:50,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:50,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138830388] [2021-11-23 16:45:50,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138830388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:50,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:50,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:45:50,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491757486] [2021-11-23 16:45:50,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:50,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:45:50,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:50,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:45:50,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:45:50,024 INFO L87 Difference]: Start difference. First operand 1066 states and 1476 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:50,972 INFO L93 Difference]: Finished difference Result 1199 states and 1677 transitions. [2021-11-23 16:45:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:45:50,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-23 16:45:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:50,978 INFO L225 Difference]: With dead ends: 1199 [2021-11-23 16:45:50,979 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:45:50,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:45:50,980 INFO L933 BasicCegarLoop]: 1443 mSDtfsCounter, 59 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 5454 SdHoareTripleChecker+Invalid, 3151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1903 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:50,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 5454 Invalid, 3151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1247 Invalid, 0 Unknown, 1903 Unchecked, 0.9s Time] [2021-11-23 16:45:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:45:51,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:45:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4223722275795565) internal successors, (1475), 1065 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1475 transitions. [2021-11-23 16:45:51,012 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1475 transitions. Word has length 109 [2021-11-23 16:45:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:51,012 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1475 transitions. [2021-11-23 16:45:51,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1475 transitions. [2021-11-23 16:45:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 16:45:51,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:51,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:51,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:51,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:51,231 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:51,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:51,232 INFO L85 PathProgramCache]: Analyzing trace with hash -604463307, now seen corresponding path program 1 times [2021-11-23 16:45:51,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:51,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374363824] [2021-11-23 16:45:51,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:51,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:51,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:51,233 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:51,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 16:45:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:51,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:45:51,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:52,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:52,994 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:52,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374363824] [2021-11-23 16:45:52,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374363824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:52,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:52,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:45:52,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251351882] [2021-11-23 16:45:52,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:52,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:45:52,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:52,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:45:52,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:45:52,995 INFO L87 Difference]: Start difference. First operand 1066 states and 1475 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:53,648 INFO L93 Difference]: Finished difference Result 1191 states and 1669 transitions. [2021-11-23 16:45:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:45:53,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-23 16:45:53,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:53,653 INFO L225 Difference]: With dead ends: 1191 [2021-11-23 16:45:53,653 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:45:53,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:45:53,655 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 84 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 3971 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1282 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:53,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 3971 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 617 Invalid, 0 Unknown, 1282 Unchecked, 0.6s Time] [2021-11-23 16:45:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:45:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:45:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4214079074252652) internal successors, (1474), 1065 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1474 transitions. [2021-11-23 16:45:53,688 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1474 transitions. Word has length 109 [2021-11-23 16:45:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:53,688 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1474 transitions. [2021-11-23 16:45:53,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1474 transitions. [2021-11-23 16:45:53,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 16:45:53,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:53,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:53,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:53,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:53,908 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:53,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:53,908 INFO L85 PathProgramCache]: Analyzing trace with hash 70295, now seen corresponding path program 1 times [2021-11-23 16:45:53,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:53,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740802531] [2021-11-23 16:45:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:53,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:53,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:53,913 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:53,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 16:45:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:54,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:45:54,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:55,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:55,790 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:55,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740802531] [2021-11-23 16:45:55,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740802531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:55,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:55,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:45:55,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127305557] [2021-11-23 16:45:55,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:55,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:45:55,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:55,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:45:55,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:45:55,792 INFO L87 Difference]: Start difference. First operand 1066 states and 1474 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:56,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:56,509 INFO L93 Difference]: Finished difference Result 1268 states and 1768 transitions. [2021-11-23 16:45:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:45:56,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-23 16:45:56,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:56,515 INFO L225 Difference]: With dead ends: 1268 [2021-11-23 16:45:56,515 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:45:56,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:45:56,516 INFO L933 BasicCegarLoop]: 1445 mSDtfsCounter, 87 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 3964 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1283 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:56,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 3964 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 620 Invalid, 0 Unknown, 1283 Unchecked, 0.7s Time] [2021-11-23 16:45:56,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:45:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:45:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.420443587270974) internal successors, (1473), 1065 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1473 transitions. [2021-11-23 16:45:56,547 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1473 transitions. Word has length 109 [2021-11-23 16:45:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:56,547 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1473 transitions. [2021-11-23 16:45:56,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1473 transitions. [2021-11-23 16:45:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 16:45:56,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:56,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:56,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-23 16:45:56,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:56,766 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1406819915, now seen corresponding path program 1 times [2021-11-23 16:45:56,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:56,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770522489] [2021-11-23 16:45:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:56,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:56,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:56,769 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:56,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 16:45:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:57,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:45:57,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:45:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:45:58,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:45:58,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:45:58,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770522489] [2021-11-23 16:45:58,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770522489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:45:58,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:45:58,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:45:58,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667353457] [2021-11-23 16:45:58,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:45:58,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:45:58,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:45:58,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:45:58,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:45:58,610 INFO L87 Difference]: Start difference. First operand 1066 states and 1473 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:59,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:45:59,280 INFO L93 Difference]: Finished difference Result 1199 states and 1675 transitions. [2021-11-23 16:45:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:45:59,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-23 16:45:59,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:45:59,285 INFO L225 Difference]: With dead ends: 1199 [2021-11-23 16:45:59,286 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:45:59,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:45:59,287 INFO L933 BasicCegarLoop]: 1440 mSDtfsCounter, 92 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 666 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:45:59,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 3216 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 615 Invalid, 0 Unknown, 666 Unchecked, 0.6s Time] [2021-11-23 16:45:59,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:45:59,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:45:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4194792671166827) internal successors, (1472), 1065 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:59,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1472 transitions. [2021-11-23 16:45:59,356 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1472 transitions. Word has length 109 [2021-11-23 16:45:59,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:45:59,357 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1472 transitions. [2021-11-23 16:45:59,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:45:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1472 transitions. [2021-11-23 16:45:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 16:45:59,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:45:59,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:45:59,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 16:45:59,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:45:59,581 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:45:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:45:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1683727184, now seen corresponding path program 1 times [2021-11-23 16:45:59,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:45:59,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932426452] [2021-11-23 16:45:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:45:59,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:45:59,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:45:59,584 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:45:59,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 16:45:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:45:59,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:45:59,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:01,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:01,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:01,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932426452] [2021-11-23 16:46:01,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932426452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:01,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:01,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:01,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710347630] [2021-11-23 16:46:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:01,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:01,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:01,190 INFO L87 Difference]: Start difference. First operand 1066 states and 1472 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:02,257 INFO L93 Difference]: Finished difference Result 1270 states and 1764 transitions. [2021-11-23 16:46:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:02,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-23 16:46:02,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:02,262 INFO L225 Difference]: With dead ends: 1270 [2021-11-23 16:46:02,262 INFO L226 Difference]: Without dead ends: 1068 [2021-11-23 16:46:02,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:02,264 INFO L933 BasicCegarLoop]: 1443 mSDtfsCounter, 60 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 3944 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 670 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:02,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 3944 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1241 Invalid, 0 Unknown, 670 Unchecked, 1.0s Time] [2021-11-23 16:46:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-23 16:46:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1066. [2021-11-23 16:46:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4185149469623914) internal successors, (1471), 1065 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1471 transitions. [2021-11-23 16:46:02,291 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1471 transitions. Word has length 109 [2021-11-23 16:46:02,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:02,292 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1471 transitions. [2021-11-23 16:46:02,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:02,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1471 transitions. [2021-11-23 16:46:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 16:46:02,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:02,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:02,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:02,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:02,510 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1204490492, now seen corresponding path program 1 times [2021-11-23 16:46:02,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:02,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290196001] [2021-11-23 16:46:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:02,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:02,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:02,512 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:02,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 16:46:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:02,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:02,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:04,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:04,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:04,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290196001] [2021-11-23 16:46:04,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290196001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:04,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:04,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:04,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435069310] [2021-11-23 16:46:04,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:04,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:04,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:04,362 INFO L87 Difference]: Start difference. First operand 1066 states and 1471 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:04,993 INFO L93 Difference]: Finished difference Result 1200 states and 1673 transitions. [2021-11-23 16:46:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:04,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-23 16:46:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:04,998 INFO L225 Difference]: With dead ends: 1200 [2021-11-23 16:46:04,998 INFO L226 Difference]: Without dead ends: 1067 [2021-11-23 16:46:04,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:04,999 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 92 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 664 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:05,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 3215 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 613 Invalid, 0 Unknown, 664 Unchecked, 0.6s Time] [2021-11-23 16:46:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-11-23 16:46:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1066. [2021-11-23 16:46:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4175506268081004) internal successors, (1470), 1065 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1470 transitions. [2021-11-23 16:46:05,026 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1470 transitions. Word has length 109 [2021-11-23 16:46:05,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:05,027 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1470 transitions. [2021-11-23 16:46:05,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1470 transitions. [2021-11-23 16:46:05,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 16:46:05,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:05,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:05,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:05,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:05,245 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:05,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash -59557012, now seen corresponding path program 1 times [2021-11-23 16:46:05,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:05,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936963932] [2021-11-23 16:46:05,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:05,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:05,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:05,248 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:05,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 16:46:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:05,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:05,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:06,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:06,984 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:06,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936963932] [2021-11-23 16:46:06,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936963932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:06,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:06,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:06,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765113060] [2021-11-23 16:46:06,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:06,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:06,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:06,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:06,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:06,987 INFO L87 Difference]: Start difference. First operand 1066 states and 1470 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:07,776 INFO L93 Difference]: Finished difference Result 1421 states and 1961 transitions. [2021-11-23 16:46:07,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:07,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-23 16:46:07,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:07,783 INFO L225 Difference]: With dead ends: 1421 [2021-11-23 16:46:07,783 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:07,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:07,786 INFO L933 BasicCegarLoop]: 1445 mSDtfsCounter, 65 mSDsluCounter, 4017 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5462 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1901 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:07,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5462 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 624 Invalid, 0 Unknown, 1901 Unchecked, 0.7s Time] [2021-11-23 16:46:07,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:07,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4165863066538091) internal successors, (1469), 1065 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1469 transitions. [2021-11-23 16:46:07,814 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1469 transitions. Word has length 109 [2021-11-23 16:46:07,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:07,815 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1469 transitions. [2021-11-23 16:46:07,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1469 transitions. [2021-11-23 16:46:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:07,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:07,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:07,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:08,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:08,021 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:08,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:08,022 INFO L85 PathProgramCache]: Analyzing trace with hash 141096883, now seen corresponding path program 1 times [2021-11-23 16:46:08,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:08,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897075564] [2021-11-23 16:46:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:08,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:08,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:08,024 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:08,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 16:46:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:08,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:08,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:09,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:09,832 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:09,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897075564] [2021-11-23 16:46:09,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897075564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:09,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:09,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:09,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867475993] [2021-11-23 16:46:09,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:09,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:09,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:09,838 INFO L87 Difference]: Start difference. First operand 1066 states and 1469 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:10,529 INFO L93 Difference]: Finished difference Result 1175 states and 1634 transitions. [2021-11-23 16:46:10,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:10,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:10,534 INFO L225 Difference]: With dead ends: 1175 [2021-11-23 16:46:10,534 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:10,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:10,535 INFO L933 BasicCegarLoop]: 1432 mSDtfsCounter, 81 mSDsluCounter, 4026 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 5458 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2486 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:10,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 5458 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 607 Invalid, 0 Unknown, 2486 Unchecked, 0.6s Time] [2021-11-23 16:46:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:10,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4156219864995179) internal successors, (1468), 1065 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1468 transitions. [2021-11-23 16:46:10,562 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1468 transitions. Word has length 111 [2021-11-23 16:46:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:10,562 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1468 transitions. [2021-11-23 16:46:10,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1468 transitions. [2021-11-23 16:46:10,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:10,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:10,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:10,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:10,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:10,781 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:10,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:10,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1756608252, now seen corresponding path program 1 times [2021-11-23 16:46:10,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:10,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346420238] [2021-11-23 16:46:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:10,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:10,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:10,783 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:10,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 16:46:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:11,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:11,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:12,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:12,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:12,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346420238] [2021-11-23 16:46:12,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346420238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:12,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:12,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:12,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074920631] [2021-11-23 16:46:12,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:12,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:12,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:12,784 INFO L87 Difference]: Start difference. First operand 1066 states and 1468 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:13,805 INFO L93 Difference]: Finished difference Result 1169 states and 1628 transitions. [2021-11-23 16:46:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:13,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:13,810 INFO L225 Difference]: With dead ends: 1169 [2021-11-23 16:46:13,810 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:13,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:13,811 INFO L933 BasicCegarLoop]: 1431 mSDtfsCounter, 59 mSDsluCounter, 3257 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 4688 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1263 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:13,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 4688 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1235 Invalid, 0 Unknown, 1263 Unchecked, 1.0s Time] [2021-11-23 16:46:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4146576663452266) internal successors, (1467), 1065 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1467 transitions. [2021-11-23 16:46:13,837 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1467 transitions. Word has length 111 [2021-11-23 16:46:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:13,838 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1467 transitions. [2021-11-23 16:46:13,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1467 transitions. [2021-11-23 16:46:13,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:13,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:13,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:13,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:14,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:14,057 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:14,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash 818178437, now seen corresponding path program 1 times [2021-11-23 16:46:14,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:14,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925745734] [2021-11-23 16:46:14,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:14,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:14,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:14,060 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:14,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 16:46:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:14,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:14,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:15,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:15,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:15,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925745734] [2021-11-23 16:46:15,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925745734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:15,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:15,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:15,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859608637] [2021-11-23 16:46:15,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:15,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:15,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:15,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:15,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:15,969 INFO L87 Difference]: Start difference. First operand 1066 states and 1467 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:16,660 INFO L93 Difference]: Finished difference Result 1167 states and 1625 transitions. [2021-11-23 16:46:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:16,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:16,666 INFO L225 Difference]: With dead ends: 1167 [2021-11-23 16:46:16,666 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:16,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:16,667 INFO L933 BasicCegarLoop]: 1430 mSDtfsCounter, 93 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:16,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 2477 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 605 Invalid, 0 Unknown, 53 Unchecked, 0.6s Time] [2021-11-23 16:46:16,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:16,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4136933461909353) internal successors, (1466), 1065 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:16,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1466 transitions. [2021-11-23 16:46:16,692 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1466 transitions. Word has length 111 [2021-11-23 16:46:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:16,692 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1466 transitions. [2021-11-23 16:46:16,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1466 transitions. [2021-11-23 16:46:16,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:16,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:16,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:16,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:16,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:16,906 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:16,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash 265888723, now seen corresponding path program 1 times [2021-11-23 16:46:16,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:16,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800956037] [2021-11-23 16:46:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:16,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:16,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:16,910 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:16,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 16:46:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:17,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:17,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:18,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:18,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:18,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800956037] [2021-11-23 16:46:18,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800956037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:18,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:18,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:18,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104850227] [2021-11-23 16:46:18,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:18,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:18,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:18,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:18,722 INFO L87 Difference]: Start difference. First operand 1066 states and 1466 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:19,511 INFO L93 Difference]: Finished difference Result 1169 states and 1626 transitions. [2021-11-23 16:46:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:19,516 INFO L225 Difference]: With dead ends: 1169 [2021-11-23 16:46:19,516 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:19,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:19,517 INFO L933 BasicCegarLoop]: 1429 mSDtfsCounter, 64 mSDsluCounter, 3995 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5424 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1869 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:19,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 5424 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 629 Invalid, 0 Unknown, 1869 Unchecked, 0.7s Time] [2021-11-23 16:46:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:19,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.412729026036644) internal successors, (1465), 1065 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:19,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1465 transitions. [2021-11-23 16:46:19,544 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1465 transitions. Word has length 111 [2021-11-23 16:46:19,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:19,544 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1465 transitions. [2021-11-23 16:46:19,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1465 transitions. [2021-11-23 16:46:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:19,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:19,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:19,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:19,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:19,762 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:19,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:19,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1781913043, now seen corresponding path program 1 times [2021-11-23 16:46:19,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:19,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806002166] [2021-11-23 16:46:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:19,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:19,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:19,765 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:19,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 16:46:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:20,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:20,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:21,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:21,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:21,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806002166] [2021-11-23 16:46:21,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806002166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:21,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:21,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:21,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784425052] [2021-11-23 16:46:21,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:21,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:21,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:21,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:21,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:21,597 INFO L87 Difference]: Start difference. First operand 1066 states and 1465 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:22,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:22,456 INFO L93 Difference]: Finished difference Result 1176 states and 1632 transitions. [2021-11-23 16:46:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:22,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:22,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:22,463 INFO L225 Difference]: With dead ends: 1176 [2021-11-23 16:46:22,463 INFO L226 Difference]: Without dead ends: 1067 [2021-11-23 16:46:22,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:22,465 INFO L933 BasicCegarLoop]: 1428 mSDtfsCounter, 65 mSDsluCounter, 4006 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5434 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1862 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:22,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5434 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 628 Invalid, 0 Unknown, 1862 Unchecked, 0.8s Time] [2021-11-23 16:46:22,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-11-23 16:46:22,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1066. [2021-11-23 16:46:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.411764705882353) internal successors, (1464), 1065 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:22,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1464 transitions. [2021-11-23 16:46:22,495 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1464 transitions. Word has length 111 [2021-11-23 16:46:22,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:22,496 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1464 transitions. [2021-11-23 16:46:22,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:22,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1464 transitions. [2021-11-23 16:46:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:22,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:22,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:22,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:22,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:22,714 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:22,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:22,714 INFO L85 PathProgramCache]: Analyzing trace with hash 484023005, now seen corresponding path program 1 times [2021-11-23 16:46:22,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:22,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950667717] [2021-11-23 16:46:22,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:22,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:22,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:22,716 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:22,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 16:46:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:23,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:23,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:24,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:24,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:24,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950667717] [2021-11-23 16:46:24,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950667717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:24,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:24,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:24,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030107057] [2021-11-23 16:46:24,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:24,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:24,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:24,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:24,414 INFO L87 Difference]: Start difference. First operand 1066 states and 1464 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:25,102 INFO L93 Difference]: Finished difference Result 1214 states and 1680 transitions. [2021-11-23 16:46:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:25,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:25,109 INFO L225 Difference]: With dead ends: 1214 [2021-11-23 16:46:25,109 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:25,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:25,111 INFO L933 BasicCegarLoop]: 1431 mSDtfsCounter, 84 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 653 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:25,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 3211 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 606 Invalid, 0 Unknown, 653 Unchecked, 0.6s Time] [2021-11-23 16:46:25,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:25,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4108003857280618) internal successors, (1463), 1065 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1463 transitions. [2021-11-23 16:46:25,134 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1463 transitions. Word has length 111 [2021-11-23 16:46:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:25,134 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1463 transitions. [2021-11-23 16:46:25,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:25,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1463 transitions. [2021-11-23 16:46:25,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:25,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:25,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:25,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:25,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:25,346 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:25,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:25,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1272512024, now seen corresponding path program 1 times [2021-11-23 16:46:25,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:25,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195900736] [2021-11-23 16:46:25,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:25,348 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:25,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:25,349 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:25,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 16:46:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:25,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:25,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:27,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:27,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:27,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195900736] [2021-11-23 16:46:27,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195900736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:27,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:27,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:27,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894715778] [2021-11-23 16:46:27,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:27,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:27,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:27,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:27,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:27,164 INFO L87 Difference]: Start difference. First operand 1066 states and 1463 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:28,238 INFO L93 Difference]: Finished difference Result 1169 states and 1623 transitions. [2021-11-23 16:46:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:28,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:28,244 INFO L225 Difference]: With dead ends: 1169 [2021-11-23 16:46:28,244 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:28,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:28,250 INFO L933 BasicCegarLoop]: 1426 mSDtfsCounter, 65 mSDsluCounter, 4009 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5435 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1855 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:28,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5435 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1225 Invalid, 0 Unknown, 1855 Unchecked, 1.0s Time] [2021-11-23 16:46:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:28,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4098360655737705) internal successors, (1462), 1065 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1462 transitions. [2021-11-23 16:46:28,272 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1462 transitions. Word has length 111 [2021-11-23 16:46:28,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:28,272 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1462 transitions. [2021-11-23 16:46:28,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1462 transitions. [2021-11-23 16:46:28,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:28,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:28,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:28,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-23 16:46:28,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:28,504 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:28,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:28,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1406535780, now seen corresponding path program 1 times [2021-11-23 16:46:28,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:28,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593806722] [2021-11-23 16:46:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:28,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:28,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:28,506 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:28,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-23 16:46:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:28,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:28,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:30,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:30,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:30,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:30,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593806722] [2021-11-23 16:46:30,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593806722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:30,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:30,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:30,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263595963] [2021-11-23 16:46:30,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:30,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:30,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:30,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:30,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:30,245 INFO L87 Difference]: Start difference. First operand 1066 states and 1462 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:30,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:30,909 INFO L93 Difference]: Finished difference Result 1175 states and 1628 transitions. [2021-11-23 16:46:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:30,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:30,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:30,912 INFO L225 Difference]: With dead ends: 1175 [2021-11-23 16:46:30,912 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:30,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:30,914 INFO L933 BasicCegarLoop]: 1425 mSDtfsCounter, 91 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:30,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2472 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 600 Invalid, 0 Unknown, 53 Unchecked, 0.6s Time] [2021-11-23 16:46:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:30,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4088717454194792) internal successors, (1461), 1065 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1461 transitions. [2021-11-23 16:46:30,934 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1461 transitions. Word has length 111 [2021-11-23 16:46:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:30,935 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1461 transitions. [2021-11-23 16:46:30,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1461 transitions. [2021-11-23 16:46:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:30,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:30,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:30,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:31,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:31,142 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:31,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:31,142 INFO L85 PathProgramCache]: Analyzing trace with hash 573484172, now seen corresponding path program 1 times [2021-11-23 16:46:31,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:31,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227658417] [2021-11-23 16:46:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:31,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:31,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:31,144 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:31,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-23 16:46:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:31,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:31,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:32,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:32,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:32,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227658417] [2021-11-23 16:46:32,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227658417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:32,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:32,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:32,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444616743] [2021-11-23 16:46:32,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:32,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:32,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:32,897 INFO L87 Difference]: Start difference. First operand 1066 states and 1461 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:33,547 INFO L93 Difference]: Finished difference Result 1177 states and 1628 transitions. [2021-11-23 16:46:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:33,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:33,550 INFO L225 Difference]: With dead ends: 1177 [2021-11-23 16:46:33,550 INFO L226 Difference]: Without dead ends: 1068 [2021-11-23 16:46:33,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:33,551 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 93 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:33,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 2471 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 599 Invalid, 0 Unknown, 60 Unchecked, 0.6s Time] [2021-11-23 16:46:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-23 16:46:33,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1066. [2021-11-23 16:46:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.407907425265188) internal successors, (1460), 1065 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1460 transitions. [2021-11-23 16:46:33,572 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1460 transitions. Word has length 111 [2021-11-23 16:46:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:33,573 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1460 transitions. [2021-11-23 16:46:33,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1460 transitions. [2021-11-23 16:46:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:33,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:33,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:33,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:33,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:33,775 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:33,776 INFO L85 PathProgramCache]: Analyzing trace with hash -724405866, now seen corresponding path program 1 times [2021-11-23 16:46:33,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:33,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571699501] [2021-11-23 16:46:33,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:33,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:33,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:33,778 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:33,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 16:46:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:34,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:34,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:35,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:35,671 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:35,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571699501] [2021-11-23 16:46:35,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571699501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:35,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:35,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:35,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727602874] [2021-11-23 16:46:35,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:35,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:35,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:35,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:35,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:35,672 INFO L87 Difference]: Start difference. First operand 1066 states and 1460 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:35,723 INFO L93 Difference]: Finished difference Result 1214 states and 1673 transitions. [2021-11-23 16:46:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:46:35,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:35,725 INFO L225 Difference]: With dead ends: 1214 [2021-11-23 16:46:35,725 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:35,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:35,726 INFO L933 BasicCegarLoop]: 1428 mSDtfsCounter, 65 mSDsluCounter, 4046 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2458 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:35,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5474 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 2458 Unchecked, 0.0s Time] [2021-11-23 16:46:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4069431051108967) internal successors, (1459), 1065 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1459 transitions. [2021-11-23 16:46:35,747 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1459 transitions. Word has length 111 [2021-11-23 16:46:35,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:35,748 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1459 transitions. [2021-11-23 16:46:35,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1459 transitions. [2021-11-23 16:46:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:35,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:35,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:35,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-23 16:46:35,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:35,967 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:35,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:35,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1814914143, now seen corresponding path program 1 times [2021-11-23 16:46:35,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:35,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415563829] [2021-11-23 16:46:35,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:35,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:35,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:35,970 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:35,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-23 16:46:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:36,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:36,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:37,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:37,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:37,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415563829] [2021-11-23 16:46:37,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415563829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:37,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:37,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:37,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742656127] [2021-11-23 16:46:37,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:37,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:37,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:37,647 INFO L87 Difference]: Start difference. First operand 1066 states and 1459 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:38,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:38,406 INFO L93 Difference]: Finished difference Result 1169 states and 1619 transitions. [2021-11-23 16:46:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:38,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:38,408 INFO L225 Difference]: With dead ends: 1169 [2021-11-23 16:46:38,408 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:38,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:38,409 INFO L933 BasicCegarLoop]: 1422 mSDtfsCounter, 65 mSDsluCounter, 3995 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5417 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1849 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:38,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5417 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 622 Invalid, 0 Unknown, 1849 Unchecked, 0.7s Time] [2021-11-23 16:46:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4059787849566057) internal successors, (1458), 1065 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1458 transitions. [2021-11-23 16:46:38,430 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1458 transitions. Word has length 111 [2021-11-23 16:46:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:38,430 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1458 transitions. [2021-11-23 16:46:38,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:38,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1458 transitions. [2021-11-23 16:46:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:38,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:38,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:38,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:38,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:38,633 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:38,633 INFO L85 PathProgramCache]: Analyzing trace with hash 198106909, now seen corresponding path program 1 times [2021-11-23 16:46:38,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:38,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529741467] [2021-11-23 16:46:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:38,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:38,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:38,635 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:38,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-23 16:46:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:38,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:38,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:40,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:40,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:40,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529741467] [2021-11-23 16:46:40,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529741467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:40,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:40,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:40,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399154078] [2021-11-23 16:46:40,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:40,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:40,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:40,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:40,462 INFO L87 Difference]: Start difference. First operand 1066 states and 1458 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:41,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:41,224 INFO L93 Difference]: Finished difference Result 1175 states and 1623 transitions. [2021-11-23 16:46:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:41,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:41,227 INFO L225 Difference]: With dead ends: 1175 [2021-11-23 16:46:41,227 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:41,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:41,228 INFO L933 BasicCegarLoop]: 1421 mSDtfsCounter, 64 mSDsluCounter, 4741 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 6162 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2442 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:41,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 6162 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 621 Invalid, 0 Unknown, 2442 Unchecked, 0.7s Time] [2021-11-23 16:46:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:41,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4050144648023144) internal successors, (1457), 1065 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1457 transitions. [2021-11-23 16:46:41,252 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1457 transitions. Word has length 111 [2021-11-23 16:46:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:41,252 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1457 transitions. [2021-11-23 16:46:41,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:41,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1457 transitions. [2021-11-23 16:46:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:41,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:41,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:41,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:41,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:41,455 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:41,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1014273453, now seen corresponding path program 1 times [2021-11-23 16:46:41,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:41,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567953944] [2021-11-23 16:46:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:41,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:41,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:41,456 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:41,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 16:46:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:41,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:41,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:43,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:43,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:43,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567953944] [2021-11-23 16:46:43,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567953944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:43,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:43,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:43,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697557412] [2021-11-23 16:46:43,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:43,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:43,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:43,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:43,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:43,295 INFO L87 Difference]: Start difference. First operand 1066 states and 1457 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:43,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:43,942 INFO L93 Difference]: Finished difference Result 1186 states and 1637 transitions. [2021-11-23 16:46:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:43,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:43,944 INFO L225 Difference]: With dead ends: 1186 [2021-11-23 16:46:43,944 INFO L226 Difference]: Without dead ends: 1077 [2021-11-23 16:46:43,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:43,945 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 113 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:43,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 2483 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 595 Invalid, 0 Unknown, 98 Unchecked, 0.6s Time] [2021-11-23 16:46:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2021-11-23 16:46:43,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1066. [2021-11-23 16:46:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4040501446480231) internal successors, (1456), 1065 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1456 transitions. [2021-11-23 16:46:43,968 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1456 transitions. Word has length 111 [2021-11-23 16:46:43,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:43,968 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1456 transitions. [2021-11-23 16:46:43,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:43,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1456 transitions. [2021-11-23 16:46:43,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:43,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:43,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:43,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:44,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:44,174 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:44,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1982803805, now seen corresponding path program 1 times [2021-11-23 16:46:44,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:44,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702983728] [2021-11-23 16:46:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:44,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:44,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:44,176 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:44,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-23 16:46:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:44,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:44,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:45,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:45,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702983728] [2021-11-23 16:46:45,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702983728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:45,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:45,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:45,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567501253] [2021-11-23 16:46:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:45,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:45,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:45,970 INFO L87 Difference]: Start difference. First operand 1066 states and 1456 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:46,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:46,666 INFO L93 Difference]: Finished difference Result 1216 states and 1674 transitions. [2021-11-23 16:46:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:46,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:46,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:46,669 INFO L225 Difference]: With dead ends: 1216 [2021-11-23 16:46:46,669 INFO L226 Difference]: Without dead ends: 1068 [2021-11-23 16:46:46,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:46,671 INFO L933 BasicCegarLoop]: 1423 mSDtfsCounter, 93 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:46,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 2451 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 598 Invalid, 0 Unknown, 56 Unchecked, 0.6s Time] [2021-11-23 16:46:46,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-23 16:46:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1066. [2021-11-23 16:46:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4030858244937319) internal successors, (1455), 1065 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1455 transitions. [2021-11-23 16:46:46,697 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1455 transitions. Word has length 111 [2021-11-23 16:46:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:46,698 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1455 transitions. [2021-11-23 16:46:46,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1455 transitions. [2021-11-23 16:46:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 16:46:46,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:46,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:46,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:46,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:46,927 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:46,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1649678164, now seen corresponding path program 1 times [2021-11-23 16:46:46,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:46,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75301493] [2021-11-23 16:46:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:46,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:46,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:46,929 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:46,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-23 16:46:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:47,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:47,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:48,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:48,739 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:48,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75301493] [2021-11-23 16:46:48,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75301493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:48,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:48,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:48,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133018139] [2021-11-23 16:46:48,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:48,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:48,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:48,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:48,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:48,741 INFO L87 Difference]: Start difference. First operand 1066 states and 1455 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:49,499 INFO L93 Difference]: Finished difference Result 1298 states and 1776 transitions. [2021-11-23 16:46:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:49,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 16:46:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:49,501 INFO L225 Difference]: With dead ends: 1298 [2021-11-23 16:46:49,501 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:49,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:49,503 INFO L933 BasicCegarLoop]: 1426 mSDtfsCounter, 91 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:49,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2435 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 601 Invalid, 0 Unknown, 45 Unchecked, 0.7s Time] [2021-11-23 16:46:49,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:49,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4021215043394406) internal successors, (1454), 1065 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1454 transitions. [2021-11-23 16:46:49,521 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1454 transitions. Word has length 111 [2021-11-23 16:46:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:49,522 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1454 transitions. [2021-11-23 16:46:49,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1454 transitions. [2021-11-23 16:46:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:46:49,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:49,524 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:49,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:49,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:49,724 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:49,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1650709051, now seen corresponding path program 1 times [2021-11-23 16:46:49,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:49,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262545110] [2021-11-23 16:46:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:49,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:49,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:49,728 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:49,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-23 16:46:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:50,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:50,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:51,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:51,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:51,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262545110] [2021-11-23 16:46:51,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262545110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:51,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:51,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:51,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030310255] [2021-11-23 16:46:51,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:51,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:51,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:51,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:51,874 INFO L87 Difference]: Start difference. First operand 1066 states and 1454 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:52,608 INFO L93 Difference]: Finished difference Result 1162 states and 1600 transitions. [2021-11-23 16:46:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:52,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:46:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:52,611 INFO L225 Difference]: With dead ends: 1162 [2021-11-23 16:46:52,611 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:52,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:52,612 INFO L933 BasicCegarLoop]: 1413 mSDtfsCounter, 90 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:52,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2479 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 588 Invalid, 0 Unknown, 57 Unchecked, 0.7s Time] [2021-11-23 16:46:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:52,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4011571841851496) internal successors, (1453), 1065 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1453 transitions. [2021-11-23 16:46:52,629 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1453 transitions. Word has length 113 [2021-11-23 16:46:52,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:52,629 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1453 transitions. [2021-11-23 16:46:52,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:52,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1453 transitions. [2021-11-23 16:46:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:46:52,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:52,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:52,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:52,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:52,832 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:52,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:52,833 INFO L85 PathProgramCache]: Analyzing trace with hash -202027273, now seen corresponding path program 1 times [2021-11-23 16:46:52,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:52,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337890343] [2021-11-23 16:46:52,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:52,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:52,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:52,835 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:52,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-23 16:46:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:53,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:53,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:54,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:54,826 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:54,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337890343] [2021-11-23 16:46:54,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337890343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:54,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:54,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:54,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710489237] [2021-11-23 16:46:54,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:54,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:54,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:54,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:54,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:54,828 INFO L87 Difference]: Start difference. First operand 1066 states and 1453 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:55,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:55,719 INFO L93 Difference]: Finished difference Result 1158 states and 1596 transitions. [2021-11-23 16:46:55,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:55,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:46:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:55,721 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 16:46:55,721 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:55,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:55,722 INFO L933 BasicCegarLoop]: 1412 mSDtfsCounter, 65 mSDsluCounter, 3986 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5398 SdHoareTripleChecker+Invalid, 2454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1817 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:55,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5398 Invalid, 2454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 636 Invalid, 0 Unknown, 1817 Unchecked, 0.8s Time] [2021-11-23 16:46:55,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:55,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.4001928640308583) internal successors, (1452), 1065 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1452 transitions. [2021-11-23 16:46:55,744 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1452 transitions. Word has length 113 [2021-11-23 16:46:55,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:55,744 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1452 transitions. [2021-11-23 16:46:55,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1452 transitions. [2021-11-23 16:46:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:46:55,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:55,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:55,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:55,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:55,962 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:55,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:55,963 INFO L85 PathProgramCache]: Analyzing trace with hash -540569381, now seen corresponding path program 1 times [2021-11-23 16:46:55,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:55,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108402366] [2021-11-23 16:46:55,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:55,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:55,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:55,965 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:55,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-23 16:46:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:56,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:56,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:46:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:46:57,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:46:57,834 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:46:57,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108402366] [2021-11-23 16:46:57,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108402366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:46:57,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:46:57,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:46:57,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582404764] [2021-11-23 16:46:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:46:57,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:46:57,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:46:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:46:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:46:57,836 INFO L87 Difference]: Start difference. First operand 1066 states and 1452 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:46:58,575 INFO L93 Difference]: Finished difference Result 1158 states and 1595 transitions. [2021-11-23 16:46:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:46:58,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:46:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:46:58,578 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 16:46:58,578 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:46:58,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:46:58,579 INFO L933 BasicCegarLoop]: 1411 mSDtfsCounter, 91 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:46:58,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2477 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 586 Invalid, 0 Unknown, 57 Unchecked, 0.7s Time] [2021-11-23 16:46:58,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:46:58,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:46:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.399228543876567) internal successors, (1451), 1065 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1451 transitions. [2021-11-23 16:46:58,603 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1451 transitions. Word has length 113 [2021-11-23 16:46:58,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:46:58,604 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1451 transitions. [2021-11-23 16:46:58,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:46:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1451 transitions. [2021-11-23 16:46:58,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:46:58,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:46:58,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:46:58,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-23 16:46:58,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:46:58,838 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:46:58,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:46:58,838 INFO L85 PathProgramCache]: Analyzing trace with hash -552255394, now seen corresponding path program 1 times [2021-11-23 16:46:58,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:46:58,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272098081] [2021-11-23 16:46:58,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:46:58,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:46:58,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:46:58,840 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:46:58,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-23 16:46:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:46:59,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:46:59,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:01,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:01,157 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:01,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272098081] [2021-11-23 16:47:01,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272098081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:01,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:01,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:01,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558453618] [2021-11-23 16:47:01,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:01,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:01,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:01,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:01,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:01,159 INFO L87 Difference]: Start difference. First operand 1066 states and 1451 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:01,901 INFO L93 Difference]: Finished difference Result 1156 states and 1592 transitions. [2021-11-23 16:47:01,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:01,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:01,904 INFO L225 Difference]: With dead ends: 1156 [2021-11-23 16:47:01,904 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:01,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:01,906 INFO L933 BasicCegarLoop]: 1410 mSDtfsCounter, 78 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3961 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1226 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:01,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 3961 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 585 Invalid, 0 Unknown, 1226 Unchecked, 0.7s Time] [2021-11-23 16:47:01,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:01,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3982642237222758) internal successors, (1450), 1065 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1450 transitions. [2021-11-23 16:47:01,923 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1450 transitions. Word has length 113 [2021-11-23 16:47:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:01,924 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1450 transitions. [2021-11-23 16:47:01,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1450 transitions. [2021-11-23 16:47:01,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:01,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:01,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:01,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:02,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:02,127 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:02,127 INFO L85 PathProgramCache]: Analyzing trace with hash 626696900, now seen corresponding path program 1 times [2021-11-23 16:47:02,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:02,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920915871] [2021-11-23 16:47:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:02,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:02,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:02,129 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:02,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-23 16:47:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:02,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:02,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:03,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:03,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:03,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920915871] [2021-11-23 16:47:03,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920915871] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:03,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:03,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:03,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199947299] [2021-11-23 16:47:03,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:03,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:03,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:03,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:03,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:03,953 INFO L87 Difference]: Start difference. First operand 1066 states and 1450 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:04,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:04,642 INFO L93 Difference]: Finished difference Result 1156 states and 1591 transitions. [2021-11-23 16:47:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:04,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:04,644 INFO L225 Difference]: With dead ends: 1156 [2021-11-23 16:47:04,644 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:04,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:04,645 INFO L933 BasicCegarLoop]: 1409 mSDtfsCounter, 92 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:04,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 2475 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 584 Invalid, 0 Unknown, 57 Unchecked, 0.6s Time] [2021-11-23 16:47:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:04,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3972999035679845) internal successors, (1449), 1065 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1449 transitions. [2021-11-23 16:47:04,662 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1449 transitions. Word has length 113 [2021-11-23 16:47:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:04,662 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1449 transitions. [2021-11-23 16:47:04,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1449 transitions. [2021-11-23 16:47:04,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:04,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:04,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:04,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-11-23 16:47:04,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:04,885 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:04,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1581029330, now seen corresponding path program 1 times [2021-11-23 16:47:04,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:04,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957380040] [2021-11-23 16:47:04,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:04,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:04,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:04,888 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:04,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-23 16:47:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:05,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:05,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:06,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:06,730 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:06,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957380040] [2021-11-23 16:47:06,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957380040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:06,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:06,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:06,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986054980] [2021-11-23 16:47:06,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:06,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:06,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:06,732 INFO L87 Difference]: Start difference. First operand 1066 states and 1449 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:07,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:07,438 INFO L93 Difference]: Finished difference Result 1158 states and 1592 transitions. [2021-11-23 16:47:07,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:07,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:07,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:07,440 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 16:47:07,440 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:07,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:07,442 INFO L933 BasicCegarLoop]: 1408 mSDtfsCounter, 91 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:07,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2474 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 583 Invalid, 0 Unknown, 57 Unchecked, 0.7s Time] [2021-11-23 16:47:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:07,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3963355834136932) internal successors, (1448), 1065 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:07,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1448 transitions. [2021-11-23 16:47:07,462 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1448 transitions. Word has length 113 [2021-11-23 16:47:07,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:07,462 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1448 transitions. [2021-11-23 16:47:07,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1448 transitions. [2021-11-23 16:47:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:07,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:07,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:07,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:07,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:07,665 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash 154895254, now seen corresponding path program 1 times [2021-11-23 16:47:07,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:07,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46494808] [2021-11-23 16:47:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:07,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:07,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:07,668 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:07,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-23 16:47:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:08,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:08,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:09,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:09,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:09,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46494808] [2021-11-23 16:47:09,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46494808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:09,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:09,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:09,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585812580] [2021-11-23 16:47:09,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:09,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:09,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:09,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:09,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:09,743 INFO L87 Difference]: Start difference. First operand 1066 states and 1448 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:10,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:10,511 INFO L93 Difference]: Finished difference Result 1156 states and 1589 transitions. [2021-11-23 16:47:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:10,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:10,514 INFO L225 Difference]: With dead ends: 1156 [2021-11-23 16:47:10,514 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:10,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:10,516 INFO L933 BasicCegarLoop]: 1407 mSDtfsCounter, 92 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 640 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:10,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 3214 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 582 Invalid, 0 Unknown, 640 Unchecked, 0.7s Time] [2021-11-23 16:47:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:10,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3953712632594022) internal successors, (1447), 1065 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:10,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1447 transitions. [2021-11-23 16:47:10,542 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1447 transitions. Word has length 113 [2021-11-23 16:47:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:10,542 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1447 transitions. [2021-11-23 16:47:10,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1447 transitions. [2021-11-23 16:47:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:10,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:10,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:10,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:10,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:10,762 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:10,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:10,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1853918876, now seen corresponding path program 1 times [2021-11-23 16:47:10,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:10,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334347122] [2021-11-23 16:47:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:10,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:10,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:10,770 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:10,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-23 16:47:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:11,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:11,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:12,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:12,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:12,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334347122] [2021-11-23 16:47:12,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334347122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:12,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:12,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:12,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700312836] [2021-11-23 16:47:12,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:12,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:12,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:12,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:12,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:12,707 INFO L87 Difference]: Start difference. First operand 1066 states and 1447 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:13,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:13,570 INFO L93 Difference]: Finished difference Result 1164 states and 1596 transitions. [2021-11-23 16:47:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:13,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:13,572 INFO L225 Difference]: With dead ends: 1164 [2021-11-23 16:47:13,573 INFO L226 Difference]: Without dead ends: 1068 [2021-11-23 16:47:13,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:13,574 INFO L933 BasicCegarLoop]: 1406 mSDtfsCounter, 66 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 5379 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1817 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:13,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 5379 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 630 Invalid, 0 Unknown, 1817 Unchecked, 0.8s Time] [2021-11-23 16:47:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-23 16:47:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1066. [2021-11-23 16:47:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.394406943105111) internal successors, (1446), 1065 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1446 transitions. [2021-11-23 16:47:13,595 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1446 transitions. Word has length 113 [2021-11-23 16:47:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:13,595 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1446 transitions. [2021-11-23 16:47:13,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1446 transitions. [2021-11-23 16:47:13,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:13,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:13,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:13,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:13,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:13,798 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:13,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:13,798 INFO L85 PathProgramCache]: Analyzing trace with hash -120006090, now seen corresponding path program 1 times [2021-11-23 16:47:13,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:13,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892977842] [2021-11-23 16:47:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:13,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:13,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:13,800 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:13,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-23 16:47:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:14,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:14,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:15,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:15,599 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:15,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892977842] [2021-11-23 16:47:15,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892977842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:15,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:15,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:15,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627682815] [2021-11-23 16:47:15,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:15,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:15,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:15,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:15,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:15,601 INFO L87 Difference]: Start difference. First operand 1066 states and 1446 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:16,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:16,306 INFO L93 Difference]: Finished difference Result 1184 states and 1620 transitions. [2021-11-23 16:47:16,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:16,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:16,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:16,308 INFO L225 Difference]: With dead ends: 1184 [2021-11-23 16:47:16,309 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:16,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:16,310 INFO L933 BasicCegarLoop]: 1409 mSDtfsCounter, 90 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:16,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2456 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 584 Invalid, 0 Unknown, 53 Unchecked, 0.7s Time] [2021-11-23 16:47:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3934426229508197) internal successors, (1445), 1065 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1445 transitions. [2021-11-23 16:47:16,328 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1445 transitions. Word has length 113 [2021-11-23 16:47:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:16,329 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1445 transitions. [2021-11-23 16:47:16,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1445 transitions. [2021-11-23 16:47:16,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:16,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:16,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:16,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:16,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:16,561 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:16,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:16,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2072946245, now seen corresponding path program 1 times [2021-11-23 16:47:16,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:16,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097518873] [2021-11-23 16:47:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:16,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:16,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:16,571 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:16,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-23 16:47:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:16,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:16,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:18,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:18,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:18,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097518873] [2021-11-23 16:47:18,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097518873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:18,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:18,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:18,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7263333] [2021-11-23 16:47:18,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:18,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:18,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:18,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:18,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:18,433 INFO L87 Difference]: Start difference. First operand 1066 states and 1445 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:19,547 INFO L93 Difference]: Finished difference Result 1162 states and 1592 transitions. [2021-11-23 16:47:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:19,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:19,551 INFO L225 Difference]: With dead ends: 1162 [2021-11-23 16:47:19,551 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:19,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:19,553 INFO L933 BasicCegarLoop]: 1404 mSDtfsCounter, 77 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:19,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 3165 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 57 Unchecked, 1.1s Time] [2021-11-23 16:47:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3924783027965284) internal successors, (1444), 1065 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:19,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1444 transitions. [2021-11-23 16:47:19,579 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1444 transitions. Word has length 113 [2021-11-23 16:47:19,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:19,580 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1444 transitions. [2021-11-23 16:47:19,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:19,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1444 transitions. [2021-11-23 16:47:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:19,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:19,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:19,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:19,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:19,798 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:19,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:19,798 INFO L85 PathProgramCache]: Analyzing trace with hash 369909324, now seen corresponding path program 1 times [2021-11-23 16:47:19,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:19,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928874978] [2021-11-23 16:47:19,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:19,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:19,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:19,800 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:19,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-23 16:47:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:20,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:20,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:21,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:21,763 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:21,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928874978] [2021-11-23 16:47:21,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928874978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:21,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:21,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:21,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838408320] [2021-11-23 16:47:21,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:21,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:21,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:21,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:21,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:21,766 INFO L87 Difference]: Start difference. First operand 1066 states and 1444 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:22,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:22,507 INFO L93 Difference]: Finished difference Result 1158 states and 1587 transitions. [2021-11-23 16:47:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:22,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:22,510 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 16:47:22,510 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:22,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:22,511 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 91 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3211 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 635 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:22,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 3211 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 578 Invalid, 0 Unknown, 635 Unchecked, 0.7s Time] [2021-11-23 16:47:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3915139826422371) internal successors, (1443), 1065 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1443 transitions. [2021-11-23 16:47:22,537 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1443 transitions. Word has length 113 [2021-11-23 16:47:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:22,537 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1443 transitions. [2021-11-23 16:47:22,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1443 transitions. [2021-11-23 16:47:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:22,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:22,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:22,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:22,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:22,754 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:22,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:22,754 INFO L85 PathProgramCache]: Analyzing trace with hash 70860839, now seen corresponding path program 1 times [2021-11-23 16:47:22,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:22,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094780483] [2021-11-23 16:47:22,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:22,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:22,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:22,756 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:22,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-23 16:47:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:23,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:23,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:24,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:24,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:24,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094780483] [2021-11-23 16:47:24,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094780483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:24,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:24,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:24,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688265269] [2021-11-23 16:47:24,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:24,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:24,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:24,653 INFO L87 Difference]: Start difference. First operand 1066 states and 1443 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:25,401 INFO L93 Difference]: Finished difference Result 1158 states and 1586 transitions. [2021-11-23 16:47:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:25,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:25,404 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 16:47:25,404 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:25,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:25,405 INFO L933 BasicCegarLoop]: 1402 mSDtfsCounter, 78 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 4682 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1800 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:25,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 4682 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 577 Invalid, 0 Unknown, 1800 Unchecked, 0.7s Time] [2021-11-23 16:47:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.390549662487946) internal successors, (1442), 1065 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1442 transitions. [2021-11-23 16:47:25,421 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1442 transitions. Word has length 113 [2021-11-23 16:47:25,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:25,422 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1442 transitions. [2021-11-23 16:47:25,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1442 transitions. [2021-11-23 16:47:25,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:25,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:25,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:25,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:25,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:25,624 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:25,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:25,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2033236148, now seen corresponding path program 1 times [2021-11-23 16:47:25,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:25,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114605487] [2021-11-23 16:47:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:25,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:25,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:25,627 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:25,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-23 16:47:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:26,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:26,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:27,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:27,528 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:27,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114605487] [2021-11-23 16:47:27,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114605487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:27,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:27,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:27,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627824434] [2021-11-23 16:47:27,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:27,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:27,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:27,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:27,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:27,531 INFO L87 Difference]: Start difference. First operand 1066 states and 1442 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:28,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:28,668 INFO L93 Difference]: Finished difference Result 1162 states and 1589 transitions. [2021-11-23 16:47:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:28,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:28,670 INFO L225 Difference]: With dead ends: 1162 [2021-11-23 16:47:28,670 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:28,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:28,671 INFO L933 BasicCegarLoop]: 1401 mSDtfsCounter, 65 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6117 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2374 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:28,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 6117 Invalid, 3574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1199 Invalid, 0 Unknown, 2374 Unchecked, 1.1s Time] [2021-11-23 16:47:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3895853423336548) internal successors, (1441), 1065 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1441 transitions. [2021-11-23 16:47:28,689 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1441 transitions. Word has length 113 [2021-11-23 16:47:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:28,689 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1441 transitions. [2021-11-23 16:47:28,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1441 transitions. [2021-11-23 16:47:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:28,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:28,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:28,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:28,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:28,892 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash 409402947, now seen corresponding path program 1 times [2021-11-23 16:47:28,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:28,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523425773] [2021-11-23 16:47:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:28,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:28,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:28,894 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:28,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-23 16:47:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:29,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:29,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:30,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:30,955 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:30,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523425773] [2021-11-23 16:47:30,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523425773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:30,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:30,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:30,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691571546] [2021-11-23 16:47:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:30,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:30,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:30,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:30,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:30,957 INFO L87 Difference]: Start difference. First operand 1066 states and 1441 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:31,659 INFO L93 Difference]: Finished difference Result 1158 states and 1584 transitions. [2021-11-23 16:47:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:31,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:31,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:31,662 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 16:47:31,662 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:31,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:31,664 INFO L933 BasicCegarLoop]: 1400 mSDtfsCounter, 91 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3936 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1221 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:31,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 3936 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 575 Invalid, 0 Unknown, 1221 Unchecked, 0.7s Time] [2021-11-23 16:47:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3886210221793636) internal successors, (1440), 1065 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1440 transitions. [2021-11-23 16:47:31,692 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1440 transitions. Word has length 113 [2021-11-23 16:47:31,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:31,692 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1440 transitions. [2021-11-23 16:47:31,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:31,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1440 transitions. [2021-11-23 16:47:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:31,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:31,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:31,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:31,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:31,912 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:31,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:31,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1288206653, now seen corresponding path program 1 times [2021-11-23 16:47:31,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:31,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235735343] [2021-11-23 16:47:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:31,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:31,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:31,915 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:31,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-23 16:47:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:32,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:32,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:33,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:33,820 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:33,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235735343] [2021-11-23 16:47:33,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235735343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:33,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:33,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:33,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058574253] [2021-11-23 16:47:33,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:33,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:33,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:33,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:33,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:33,822 INFO L87 Difference]: Start difference. First operand 1066 states and 1440 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:34,533 INFO L93 Difference]: Finished difference Result 1158 states and 1583 transitions. [2021-11-23 16:47:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:34,535 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 16:47:34,535 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:34,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:34,536 INFO L933 BasicCegarLoop]: 1399 mSDtfsCounter, 91 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:34,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2465 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 574 Invalid, 0 Unknown, 57 Unchecked, 0.7s Time] [2021-11-23 16:47:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:34,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3876567020250723) internal successors, (1439), 1065 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:34,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1439 transitions. [2021-11-23 16:47:34,563 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1439 transitions. Word has length 113 [2021-11-23 16:47:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:34,563 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1439 transitions. [2021-11-23 16:47:34,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:34,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1439 transitions. [2021-11-23 16:47:34,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:34,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:34,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:34,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:34,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:34,783 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:34,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:34,783 INFO L85 PathProgramCache]: Analyzing trace with hash 563017332, now seen corresponding path program 1 times [2021-11-23 16:47:34,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:34,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340910735] [2021-11-23 16:47:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:34,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:34,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:34,785 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:34,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-11-23 16:47:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:35,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:35,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:36,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:36,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:36,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340910735] [2021-11-23 16:47:36,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340910735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:36,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:36,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:36,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882677204] [2021-11-23 16:47:36,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:36,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:36,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:36,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:36,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:36,706 INFO L87 Difference]: Start difference. First operand 1066 states and 1439 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:37,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:37,429 INFO L93 Difference]: Finished difference Result 1162 states and 1585 transitions. [2021-11-23 16:47:37,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:37,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:37,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:37,431 INFO L225 Difference]: With dead ends: 1162 [2021-11-23 16:47:37,431 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:37,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:37,432 INFO L933 BasicCegarLoop]: 1398 mSDtfsCounter, 78 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3208 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 628 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:37,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 3208 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 573 Invalid, 0 Unknown, 628 Unchecked, 0.7s Time] [2021-11-23 16:47:37,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.386692381870781) internal successors, (1438), 1065 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1438 transitions. [2021-11-23 16:47:37,453 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1438 transitions. Word has length 113 [2021-11-23 16:47:37,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:37,453 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1438 transitions. [2021-11-23 16:47:37,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:37,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1438 transitions. [2021-11-23 16:47:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:37,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:37,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:37,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:37,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:37,656 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:37,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:37,657 INFO L85 PathProgramCache]: Analyzing trace with hash 194915157, now seen corresponding path program 1 times [2021-11-23 16:47:37,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:37,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316227688] [2021-11-23 16:47:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:37,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:37,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:37,659 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:37,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-23 16:47:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:38,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:38,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:39,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:39,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:39,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316227688] [2021-11-23 16:47:39,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316227688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:39,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:39,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:39,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854955918] [2021-11-23 16:47:39,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:39,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:39,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:39,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:39,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:39,813 INFO L87 Difference]: Start difference. First operand 1066 states and 1438 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:40,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:40,577 INFO L93 Difference]: Finished difference Result 1163 states and 1585 transitions. [2021-11-23 16:47:40,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:40,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:40,579 INFO L225 Difference]: With dead ends: 1163 [2021-11-23 16:47:40,579 INFO L226 Difference]: Without dead ends: 1067 [2021-11-23 16:47:40,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:40,580 INFO L933 BasicCegarLoop]: 1397 mSDtfsCounter, 90 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:40,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2463 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 58 Unchecked, 0.7s Time] [2021-11-23 16:47:40,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-11-23 16:47:40,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1066. [2021-11-23 16:47:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3857280617164898) internal successors, (1437), 1065 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:40,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1437 transitions. [2021-11-23 16:47:40,597 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1437 transitions. Word has length 113 [2021-11-23 16:47:40,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:40,598 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1437 transitions. [2021-11-23 16:47:40,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:40,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1437 transitions. [2021-11-23 16:47:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:40,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:40,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:40,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:40,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:40,802 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:40,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash 603760385, now seen corresponding path program 1 times [2021-11-23 16:47:40,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:40,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013597453] [2021-11-23 16:47:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:40,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:40,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:40,804 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:40,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-11-23 16:47:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:41,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:41,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:42,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:42,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:42,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013597453] [2021-11-23 16:47:42,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013597453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:42,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:42,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:42,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319427418] [2021-11-23 16:47:42,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:42,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:42,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:42,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:42,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:42,633 INFO L87 Difference]: Start difference. First operand 1066 states and 1437 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:43,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:43,404 INFO L93 Difference]: Finished difference Result 1184 states and 1609 transitions. [2021-11-23 16:47:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:43,406 INFO L225 Difference]: With dead ends: 1184 [2021-11-23 16:47:43,406 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:43,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:43,407 INFO L933 BasicCegarLoop]: 1400 mSDtfsCounter, 65 mSDsluCounter, 4007 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5407 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1777 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:43,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5407 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 600 Invalid, 0 Unknown, 1777 Unchecked, 0.7s Time] [2021-11-23 16:47:43,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3847637415621987) internal successors, (1436), 1065 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1436 transitions. [2021-11-23 16:47:43,428 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1436 transitions. Word has length 113 [2021-11-23 16:47:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:43,429 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1436 transitions. [2021-11-23 16:47:43,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:43,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1436 transitions. [2021-11-23 16:47:43,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:43,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:43,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:43,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:43,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:43,632 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:43,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:43,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1648532600, now seen corresponding path program 1 times [2021-11-23 16:47:43,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:43,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547429885] [2021-11-23 16:47:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:43,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:43,634 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:43,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-11-23 16:47:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:44,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:44,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:45,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:45,405 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:45,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547429885] [2021-11-23 16:47:45,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547429885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:45,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:45,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:45,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327397457] [2021-11-23 16:47:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:45,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:45,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:45,407 INFO L87 Difference]: Start difference. First operand 1066 states and 1436 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:46,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:46,032 INFO L93 Difference]: Finished difference Result 1156 states and 1577 transitions. [2021-11-23 16:47:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:46,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:46,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:46,035 INFO L225 Difference]: With dead ends: 1156 [2021-11-23 16:47:46,035 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:46,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:46,037 INFO L933 BasicCegarLoop]: 1395 mSDtfsCounter, 92 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:46,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 2461 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 570 Invalid, 0 Unknown, 57 Unchecked, 0.6s Time] [2021-11-23 16:47:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3837994214079075) internal successors, (1435), 1065 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1435 transitions. [2021-11-23 16:47:46,063 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1435 transitions. Word has length 113 [2021-11-23 16:47:46,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:46,064 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1435 transitions. [2021-11-23 16:47:46,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1435 transitions. [2021-11-23 16:47:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:46,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:46,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:46,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-11-23 16:47:46,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:46,282 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:46,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1587255138, now seen corresponding path program 1 times [2021-11-23 16:47:46,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:46,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126371607] [2021-11-23 16:47:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:46,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:46,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:46,284 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:46,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-11-23 16:47:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:46,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:46,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:48,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:48,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:48,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126371607] [2021-11-23 16:47:48,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126371607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:48,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:48,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:48,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786965368] [2021-11-23 16:47:48,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:48,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:48,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:48,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:48,053 INFO L87 Difference]: Start difference. First operand 1066 states and 1435 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:48,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:48,781 INFO L93 Difference]: Finished difference Result 1158 states and 1578 transitions. [2021-11-23 16:47:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:48,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:48,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:48,783 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 16:47:48,783 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:48,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:48,784 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 65 mSDsluCounter, 4713 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6107 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2346 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:48,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 6107 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 618 Invalid, 0 Unknown, 2346 Unchecked, 0.7s Time] [2021-11-23 16:47:48,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:48,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3828351012536162) internal successors, (1434), 1065 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1434 transitions. [2021-11-23 16:47:48,811 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1434 transitions. Word has length 113 [2021-11-23 16:47:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:48,811 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1434 transitions. [2021-11-23 16:47:48,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1434 transitions. [2021-11-23 16:47:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:48,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:48,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:48,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:49,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:49,034 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:49,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:49,035 INFO L85 PathProgramCache]: Analyzing trace with hash 602727429, now seen corresponding path program 1 times [2021-11-23 16:47:49,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:49,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656924466] [2021-11-23 16:47:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:49,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:49,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:49,036 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:49,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-23 16:47:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:49,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:49,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:50,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:50,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:50,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656924466] [2021-11-23 16:47:50,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656924466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:50,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:50,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:50,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005866252] [2021-11-23 16:47:50,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:50,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:50,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:50,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:50,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:50,797 INFO L87 Difference]: Start difference. First operand 1066 states and 1434 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:51,398 INFO L93 Difference]: Finished difference Result 1162 states and 1580 transitions. [2021-11-23 16:47:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:51,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:51,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:51,400 INFO L225 Difference]: With dead ends: 1162 [2021-11-23 16:47:51,400 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:51,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:51,401 INFO L933 BasicCegarLoop]: 1393 mSDtfsCounter, 90 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 625 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:51,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 3201 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 568 Invalid, 0 Unknown, 625 Unchecked, 0.6s Time] [2021-11-23 16:47:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.381870781099325) internal successors, (1433), 1065 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1433 transitions. [2021-11-23 16:47:51,427 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1433 transitions. Word has length 113 [2021-11-23 16:47:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:51,428 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1433 transitions. [2021-11-23 16:47:51,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1433 transitions. [2021-11-23 16:47:51,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:51,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:51,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:51,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:51,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:51,650 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:51,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:51,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1248713030, now seen corresponding path program 1 times [2021-11-23 16:47:51,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:51,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017316238] [2021-11-23 16:47:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:51,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:51,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:51,652 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:51,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-11-23 16:47:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:52,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:52,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:53,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:53,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:53,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017316238] [2021-11-23 16:47:53,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017316238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:53,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:53,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:53,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841147374] [2021-11-23 16:47:53,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:53,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:53,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:53,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:53,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:53,450 INFO L87 Difference]: Start difference. First operand 1066 states and 1433 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:54,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:54,297 INFO L93 Difference]: Finished difference Result 1158 states and 1576 transitions. [2021-11-23 16:47:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:54,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:54,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:54,299 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 16:47:54,299 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:54,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:54,300 INFO L933 BasicCegarLoop]: 1392 mSDtfsCounter, 91 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:54,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2458 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 567 Invalid, 0 Unknown, 57 Unchecked, 0.8s Time] [2021-11-23 16:47:54,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3809064609450337) internal successors, (1432), 1065 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1432 transitions. [2021-11-23 16:47:54,321 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1432 transitions. Word has length 113 [2021-11-23 16:47:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:54,321 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1432 transitions. [2021-11-23 16:47:54,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1432 transitions. [2021-11-23 16:47:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:54,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:54,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:54,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:54,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:54,523 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1609523413, now seen corresponding path program 1 times [2021-11-23 16:47:54,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:54,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261643470] [2021-11-23 16:47:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:54,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:54,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:54,525 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:54,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-11-23 16:47:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:54,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:54,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:56,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:56,211 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:56,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261643470] [2021-11-23 16:47:56,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261643470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:56,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:56,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:56,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163316915] [2021-11-23 16:47:56,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:56,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:56,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:56,213 INFO L87 Difference]: Start difference. First operand 1066 states and 1432 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:57,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:47:57,230 INFO L93 Difference]: Finished difference Result 1229 states and 1661 transitions. [2021-11-23 16:47:57,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:47:57,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:47:57,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:47:57,232 INFO L225 Difference]: With dead ends: 1229 [2021-11-23 16:47:57,232 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:47:57,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:47:57,233 INFO L933 BasicCegarLoop]: 1399 mSDtfsCounter, 65 mSDsluCounter, 4766 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6165 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2346 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:47:57,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 6165 Invalid, 3506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1159 Invalid, 0 Unknown, 2346 Unchecked, 1.0s Time] [2021-11-23 16:47:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:47:57,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:47:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3799421407907426) internal successors, (1431), 1065 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1431 transitions. [2021-11-23 16:47:57,262 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1431 transitions. Word has length 113 [2021-11-23 16:47:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:47:57,263 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1431 transitions. [2021-11-23 16:47:57,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:47:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1431 transitions. [2021-11-23 16:47:57,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:47:57,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:47:57,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:47:57,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-11-23 16:47:57,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:47:57,482 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:47:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:47:57,483 INFO L85 PathProgramCache]: Analyzing trace with hash -502514123, now seen corresponding path program 1 times [2021-11-23 16:47:57,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:47:57,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668128571] [2021-11-23 16:47:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:47:57,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:47:57,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:47:57,484 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:47:57,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-11-23 16:47:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:47:57,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:47:57,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:47:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:47:59,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:47:59,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:47:59,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668128571] [2021-11-23 16:47:59,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668128571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:47:59,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:47:59,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:47:59,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159187860] [2021-11-23 16:47:59,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:47:59,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:47:59,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:47:59,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:47:59,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:47:59,284 INFO L87 Difference]: Start difference. First operand 1066 states and 1431 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:00,061 INFO L93 Difference]: Finished difference Result 1184 states and 1605 transitions. [2021-11-23 16:48:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:00,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:48:00,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:00,063 INFO L225 Difference]: With dead ends: 1184 [2021-11-23 16:48:00,063 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:00,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:00,064 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 65 mSDsluCounter, 4747 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6141 SdHoareTripleChecker+Invalid, 2929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2334 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:00,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 6141 Invalid, 2929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 594 Invalid, 0 Unknown, 2334 Unchecked, 0.7s Time] [2021-11-23 16:48:00,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3789778206364514) internal successors, (1430), 1065 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1430 transitions. [2021-11-23 16:48:00,088 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1430 transitions. Word has length 113 [2021-11-23 16:48:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:00,088 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1430 transitions. [2021-11-23 16:48:00,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:00,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1430 transitions. [2021-11-23 16:48:00,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:48:00,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:00,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:00,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:00,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:00,291 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:00,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:00,292 INFO L85 PathProgramCache]: Analyzing trace with hash -911359351, now seen corresponding path program 1 times [2021-11-23 16:48:00,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:00,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806130530] [2021-11-23 16:48:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:00,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:00,293 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:00,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-11-23 16:48:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:00,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:00,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:02,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:02,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:02,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:02,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806130530] [2021-11-23 16:48:02,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806130530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:02,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:02,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:02,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100932989] [2021-11-23 16:48:02,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:02,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:02,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:02,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:02,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:02,069 INFO L87 Difference]: Start difference. First operand 1066 states and 1430 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:03,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:03,111 INFO L93 Difference]: Finished difference Result 1162 states and 1577 transitions. [2021-11-23 16:48:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:03,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:48:03,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:03,114 INFO L225 Difference]: With dead ends: 1162 [2021-11-23 16:48:03,114 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:03,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:03,117 INFO L933 BasicCegarLoop]: 1389 mSDtfsCounter, 77 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:03,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 3150 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1175 Invalid, 0 Unknown, 57 Unchecked, 1.0s Time] [2021-11-23 16:48:03,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.37801350048216) internal successors, (1429), 1065 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1429 transitions. [2021-11-23 16:48:03,154 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1429 transitions. Word has length 113 [2021-11-23 16:48:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:03,155 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1429 transitions. [2021-11-23 16:48:03,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1429 transitions. [2021-11-23 16:48:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:48:03,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:03,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:03,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:03,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:03,377 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash -926787844, now seen corresponding path program 1 times [2021-11-23 16:48:03,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:03,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136139131] [2021-11-23 16:48:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:03,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:03,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:03,379 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:03,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-11-23 16:48:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:03,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:03,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:05,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:05,169 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:05,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136139131] [2021-11-23 16:48:05,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136139131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:05,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:05,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:05,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925492456] [2021-11-23 16:48:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:05,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:05,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:05,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:05,171 INFO L87 Difference]: Start difference. First operand 1066 states and 1429 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:06,217 INFO L93 Difference]: Finished difference Result 1164 states and 1578 transitions. [2021-11-23 16:48:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:06,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:48:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:06,219 INFO L225 Difference]: With dead ends: 1164 [2021-11-23 16:48:06,219 INFO L226 Difference]: Without dead ends: 1068 [2021-11-23 16:48:06,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:06,220 INFO L933 BasicCegarLoop]: 1388 mSDtfsCounter, 66 mSDsluCounter, 3974 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 5362 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1770 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:06,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 5362 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1173 Invalid, 0 Unknown, 1770 Unchecked, 1.0s Time] [2021-11-23 16:48:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-23 16:48:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1066. [2021-11-23 16:48:06,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3770491803278688) internal successors, (1428), 1065 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1428 transitions. [2021-11-23 16:48:06,237 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1428 transitions. Word has length 113 [2021-11-23 16:48:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:06,237 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1428 transitions. [2021-11-23 16:48:06,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1428 transitions. [2021-11-23 16:48:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:48:06,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:06,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:06,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:06,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:06,440 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:06,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:06,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1394254486, now seen corresponding path program 1 times [2021-11-23 16:48:06,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:06,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722856784] [2021-11-23 16:48:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:06,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:06,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:06,442 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:06,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-11-23 16:48:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:06,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:06,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:08,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:08,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:08,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722856784] [2021-11-23 16:48:08,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722856784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:08,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:08,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:08,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410066186] [2021-11-23 16:48:08,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:08,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:08,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:08,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:08,255 INFO L87 Difference]: Start difference. First operand 1066 states and 1428 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:08,314 INFO L93 Difference]: Finished difference Result 1184 states and 1602 transitions. [2021-11-23 16:48:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:48:08,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:48:08,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:08,316 INFO L225 Difference]: With dead ends: 1184 [2021-11-23 16:48:08,316 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:08,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:08,317 INFO L933 BasicCegarLoop]: 1392 mSDtfsCounter, 74 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3945 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1185 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:08,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 3945 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 1185 Unchecked, 0.0s Time] [2021-11-23 16:48:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:08,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3760848601735776) internal successors, (1427), 1065 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1427 transitions. [2021-11-23 16:48:08,343 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1427 transitions. Word has length 113 [2021-11-23 16:48:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:08,343 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1427 transitions. [2021-11-23 16:48:08,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1427 transitions. [2021-11-23 16:48:08,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:48:08,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:08,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:08,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:08,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:08,562 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:08,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:08,563 INFO L85 PathProgramCache]: Analyzing trace with hash -558685669, now seen corresponding path program 1 times [2021-11-23 16:48:08,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:08,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347069420] [2021-11-23 16:48:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:08,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:08,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:08,565 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:08,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-11-23 16:48:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:08,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:08,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:10,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:10,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:10,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347069420] [2021-11-23 16:48:10,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347069420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:10,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:10,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:10,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449212800] [2021-11-23 16:48:10,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:10,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:10,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:10,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:10,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:10,352 INFO L87 Difference]: Start difference. First operand 1066 states and 1427 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:10,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:10,997 INFO L93 Difference]: Finished difference Result 1162 states and 1574 transitions. [2021-11-23 16:48:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:10,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:48:10,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:10,999 INFO L225 Difference]: With dead ends: 1162 [2021-11-23 16:48:10,999 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:10,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:11,000 INFO L933 BasicCegarLoop]: 1386 mSDtfsCounter, 90 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:11,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2452 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 561 Invalid, 0 Unknown, 57 Unchecked, 0.6s Time] [2021-11-23 16:48:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:11,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3751205400192863) internal successors, (1426), 1065 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1426 transitions. [2021-11-23 16:48:11,025 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1426 transitions. Word has length 113 [2021-11-23 16:48:11,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:11,025 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1426 transitions. [2021-11-23 16:48:11,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:11,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1426 transitions. [2021-11-23 16:48:11,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 16:48:11,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:11,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:11,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:11,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:11,243 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:11,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1885537261, now seen corresponding path program 1 times [2021-11-23 16:48:11,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:11,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763923152] [2021-11-23 16:48:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:11,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:11,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:11,246 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:11,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-11-23 16:48:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:11,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:11,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:12,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:12,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:12,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763923152] [2021-11-23 16:48:12,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763923152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:12,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:12,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:12,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937306971] [2021-11-23 16:48:12,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:12,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:12,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:12,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:12,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:12,980 INFO L87 Difference]: Start difference. First operand 1066 states and 1426 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:13,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:13,026 INFO L93 Difference]: Finished difference Result 1158 states and 1569 transitions. [2021-11-23 16:48:13,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:48:13,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-23 16:48:13,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:13,032 INFO L225 Difference]: With dead ends: 1158 [2021-11-23 16:48:13,032 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:13,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:13,033 INFO L933 BasicCegarLoop]: 1386 mSDtfsCounter, 78 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3947 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1177 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:13,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 3947 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 1177 Unchecked, 0.0s Time] [2021-11-23 16:48:13,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:13,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:13,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3741562198649953) internal successors, (1425), 1065 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1425 transitions. [2021-11-23 16:48:13,060 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1425 transitions. Word has length 113 [2021-11-23 16:48:13,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:13,061 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1425 transitions. [2021-11-23 16:48:13,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:13,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1425 transitions. [2021-11-23 16:48:13,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 16:48:13,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:13,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:13,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:13,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:13,284 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:13,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:13,284 INFO L85 PathProgramCache]: Analyzing trace with hash 950824379, now seen corresponding path program 1 times [2021-11-23 16:48:13,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:13,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084401155] [2021-11-23 16:48:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:13,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:13,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:13,286 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:13,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-11-23 16:48:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:13,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:13,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:15,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:15,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:15,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084401155] [2021-11-23 16:48:15,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084401155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:15,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:15,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:15,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597821645] [2021-11-23 16:48:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:15,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:15,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:15,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:15,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:15,105 INFO L87 Difference]: Start difference. First operand 1066 states and 1425 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:16,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:16,137 INFO L93 Difference]: Finished difference Result 1156 states and 1566 transitions. [2021-11-23 16:48:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:16,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-23 16:48:16,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:16,139 INFO L225 Difference]: With dead ends: 1156 [2021-11-23 16:48:16,139 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:16,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:16,140 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 65 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5357 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1748 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:16,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5357 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1165 Invalid, 0 Unknown, 1748 Unchecked, 1.0s Time] [2021-11-23 16:48:16,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:16,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:16,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.373191899710704) internal successors, (1424), 1065 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1424 transitions. [2021-11-23 16:48:16,157 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1424 transitions. Word has length 114 [2021-11-23 16:48:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:16,157 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1424 transitions. [2021-11-23 16:48:16,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1424 transitions. [2021-11-23 16:48:16,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 16:48:16,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:16,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:16,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:16,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:16,360 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:16,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:16,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2051506923, now seen corresponding path program 1 times [2021-11-23 16:48:16,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:16,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284008330] [2021-11-23 16:48:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:16,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:16,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:16,364 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:16,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-11-23 16:48:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:16,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:16,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:18,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:18,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:18,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284008330] [2021-11-23 16:48:18,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284008330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:18,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:18,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:18,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827667731] [2021-11-23 16:48:18,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:18,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:18,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:18,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:18,024 INFO L87 Difference]: Start difference. First operand 1066 states and 1424 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:18,971 INFO L93 Difference]: Finished difference Result 1156 states and 1565 transitions. [2021-11-23 16:48:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:18,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-23 16:48:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:18,973 INFO L225 Difference]: With dead ends: 1156 [2021-11-23 16:48:18,973 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:18,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:18,974 INFO L933 BasicCegarLoop]: 1383 mSDtfsCounter, 79 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1174 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:18,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 4627 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1163 Invalid, 0 Unknown, 1174 Unchecked, 0.9s Time] [2021-11-23 16:48:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3722275795564127) internal successors, (1423), 1065 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1423 transitions. [2021-11-23 16:48:18,990 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1423 transitions. Word has length 114 [2021-11-23 16:48:18,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:18,991 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1423 transitions. [2021-11-23 16:48:18,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1423 transitions. [2021-11-23 16:48:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:18,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:18,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:19,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:19,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:19,194 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:19,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:19,194 INFO L85 PathProgramCache]: Analyzing trace with hash 468177209, now seen corresponding path program 1 times [2021-11-23 16:48:19,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:19,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118159975] [2021-11-23 16:48:19,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:19,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:19,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:19,197 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:19,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-11-23 16:48:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:19,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:19,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:20,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:20,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:20,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118159975] [2021-11-23 16:48:20,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118159975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:20,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:20,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:20,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707996195] [2021-11-23 16:48:20,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:20,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:20,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:20,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:20,924 INFO L87 Difference]: Start difference. First operand 1066 states and 1423 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:20,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:20,969 INFO L93 Difference]: Finished difference Result 1152 states and 1557 transitions. [2021-11-23 16:48:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:48:20,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:20,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:20,971 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:48:20,971 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:20,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:20,972 INFO L933 BasicCegarLoop]: 1379 mSDtfsCounter, 65 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 4662 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1747 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:20,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 4662 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 1747 Unchecked, 0.0s Time] [2021-11-23 16:48:20,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:20,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3712632594021215) internal successors, (1422), 1065 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1422 transitions. [2021-11-23 16:48:20,999 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1422 transitions. Word has length 115 [2021-11-23 16:48:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:20,999 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1422 transitions. [2021-11-23 16:48:20,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1422 transitions. [2021-11-23 16:48:21,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:21,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:21,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:21,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-11-23 16:48:21,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:21,218 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:21,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash -795408913, now seen corresponding path program 1 times [2021-11-23 16:48:21,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:21,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838247294] [2021-11-23 16:48:21,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:21,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:21,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:21,220 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:21,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-11-23 16:48:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:21,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:21,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:23,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:23,197 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:23,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838247294] [2021-11-23 16:48:23,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838247294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:23,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:23,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:23,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143237280] [2021-11-23 16:48:23,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:23,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:23,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:23,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:23,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:23,198 INFO L87 Difference]: Start difference. First operand 1066 states and 1422 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:24,273 INFO L93 Difference]: Finished difference Result 1071 states and 1426 transitions. [2021-11-23 16:48:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:24,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:24,275 INFO L225 Difference]: With dead ends: 1071 [2021-11-23 16:48:24,275 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:24,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:24,276 INFO L933 BasicCegarLoop]: 1377 mSDtfsCounter, 59 mSDsluCounter, 3942 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 5319 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1715 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:24,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 5319 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1200 Invalid, 0 Unknown, 1715 Unchecked, 1.0s Time] [2021-11-23 16:48:24,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:24,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3702989392478302) internal successors, (1421), 1065 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1421 transitions. [2021-11-23 16:48:24,293 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1421 transitions. Word has length 115 [2021-11-23 16:48:24,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:24,293 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1421 transitions. [2021-11-23 16:48:24,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:24,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1421 transitions. [2021-11-23 16:48:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:24,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:24,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:24,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:24,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:24,511 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1116871285, now seen corresponding path program 1 times [2021-11-23 16:48:24,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:24,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035903820] [2021-11-23 16:48:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:24,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:24,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:24,513 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:24,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-11-23 16:48:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:24,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:24,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:26,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:26,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:26,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:26,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035903820] [2021-11-23 16:48:26,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035903820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:26,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:26,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:26,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174824048] [2021-11-23 16:48:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:26,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:26,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:26,321 INFO L87 Difference]: Start difference. First operand 1066 states and 1421 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:26,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:26,364 INFO L93 Difference]: Finished difference Result 1152 states and 1555 transitions. [2021-11-23 16:48:26,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:48:26,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:26,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:26,366 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:48:26,366 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:26,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:26,367 INFO L933 BasicCegarLoop]: 1377 mSDtfsCounter, 65 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1161 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:26,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 3948 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 1161 Unchecked, 0.0s Time] [2021-11-23 16:48:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3693346190935392) internal successors, (1420), 1065 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1420 transitions. [2021-11-23 16:48:26,387 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1420 transitions. Word has length 115 [2021-11-23 16:48:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:26,387 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1420 transitions. [2021-11-23 16:48:26,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1420 transitions. [2021-11-23 16:48:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:26,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:26,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:26,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:26,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:26,590 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:26,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:26,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1229723649, now seen corresponding path program 1 times [2021-11-23 16:48:26,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:26,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347449866] [2021-11-23 16:48:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:26,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:26,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:26,592 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:26,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-11-23 16:48:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:27,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:27,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:28,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:28,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:28,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347449866] [2021-11-23 16:48:28,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347449866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:28,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:28,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:28,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021685578] [2021-11-23 16:48:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:28,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:28,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:28,365 INFO L87 Difference]: Start difference. First operand 1066 states and 1420 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:29,433 INFO L93 Difference]: Finished difference Result 1150 states and 1552 transitions. [2021-11-23 16:48:29,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:29,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:29,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:29,435 INFO L225 Difference]: With dead ends: 1150 [2021-11-23 16:48:29,435 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:29,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:29,436 INFO L933 BasicCegarLoop]: 1375 mSDtfsCounter, 81 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 3840 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 611 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:29,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 3840 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1196 Invalid, 0 Unknown, 611 Unchecked, 1.0s Time] [2021-11-23 16:48:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3683702989392479) internal successors, (1419), 1065 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:29,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1419 transitions. [2021-11-23 16:48:29,454 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1419 transitions. Word has length 115 [2021-11-23 16:48:29,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:29,454 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1419 transitions. [2021-11-23 16:48:29,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:29,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1419 transitions. [2021-11-23 16:48:29,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:29,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:29,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:29,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:29,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:29,657 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:29,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2004216103, now seen corresponding path program 1 times [2021-11-23 16:48:29,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:29,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118900830] [2021-11-23 16:48:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:29,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:29,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:29,659 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:29,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-11-23 16:48:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:30,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:30,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:31,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:31,586 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:31,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118900830] [2021-11-23 16:48:31,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118900830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:31,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:31,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:31,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454038852] [2021-11-23 16:48:31,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:31,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:31,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:31,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:31,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:31,587 INFO L87 Difference]: Start difference. First operand 1066 states and 1419 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:31,633 INFO L93 Difference]: Finished difference Result 1152 states and 1553 transitions. [2021-11-23 16:48:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:48:31,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:31,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:31,635 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:48:31,635 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:31,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:31,636 INFO L933 BasicCegarLoop]: 1375 mSDtfsCounter, 64 mSDsluCounter, 4020 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5395 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2285 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:31,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 5395 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 2285 Unchecked, 0.0s Time] [2021-11-23 16:48:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3674059787849566) internal successors, (1418), 1065 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1418 transitions. [2021-11-23 16:48:31,657 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1418 transitions. Word has length 115 [2021-11-23 16:48:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:31,657 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1418 transitions. [2021-11-23 16:48:31,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1418 transitions. [2021-11-23 16:48:31,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:31,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:31,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:31,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:31,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:31,859 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:31,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:31,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1280877255, now seen corresponding path program 1 times [2021-11-23 16:48:31,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:31,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632493805] [2021-11-23 16:48:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:31,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:31,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:31,861 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:31,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-11-23 16:48:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:32,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:32,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:33,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:33,758 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:33,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632493805] [2021-11-23 16:48:33,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632493805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:33,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:33,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:33,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332398064] [2021-11-23 16:48:33,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:33,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:33,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:33,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:33,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:33,760 INFO L87 Difference]: Start difference. First operand 1066 states and 1418 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:34,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:34,577 INFO L93 Difference]: Finished difference Result 1150 states and 1550 transitions. [2021-11-23 16:48:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:34,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:34,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:34,579 INFO L225 Difference]: With dead ends: 1150 [2021-11-23 16:48:34,579 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:34,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:34,581 INFO L933 BasicCegarLoop]: 1373 mSDtfsCounter, 65 mSDsluCounter, 3907 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5280 SdHoareTripleChecker+Invalid, 2382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1735 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:34,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5280 Invalid, 2382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 646 Invalid, 0 Unknown, 1735 Unchecked, 0.8s Time] [2021-11-23 16:48:34,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3664416586306654) internal successors, (1417), 1065 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:34,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1417 transitions. [2021-11-23 16:48:34,599 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1417 transitions. Word has length 115 [2021-11-23 16:48:34,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:34,599 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1417 transitions. [2021-11-23 16:48:34,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:34,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1417 transitions. [2021-11-23 16:48:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:34,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:34,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:34,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:34,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:34,802 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1026700327, now seen corresponding path program 1 times [2021-11-23 16:48:34,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:34,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949546659] [2021-11-23 16:48:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:34,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:34,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:34,804 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:34,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-11-23 16:48:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:35,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:35,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:36,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:36,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:36,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949546659] [2021-11-23 16:48:36,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949546659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:36,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:36,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:36,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963777383] [2021-11-23 16:48:36,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:36,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:36,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:36,643 INFO L87 Difference]: Start difference. First operand 1066 states and 1417 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:37,301 INFO L93 Difference]: Finished difference Result 1150 states and 1549 transitions. [2021-11-23 16:48:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:37,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:37,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:37,303 INFO L225 Difference]: With dead ends: 1150 [2021-11-23 16:48:37,303 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:37,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:37,304 INFO L933 BasicCegarLoop]: 1372 mSDtfsCounter, 91 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:37,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2457 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 547 Invalid, 0 Unknown, 61 Unchecked, 0.6s Time] [2021-11-23 16:48:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.365477338476374) internal successors, (1416), 1065 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:37,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1416 transitions. [2021-11-23 16:48:37,322 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1416 transitions. Word has length 115 [2021-11-23 16:48:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:37,323 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1416 transitions. [2021-11-23 16:48:37,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:37,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1416 transitions. [2021-11-23 16:48:37,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:37,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:37,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:37,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:37,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:37,525 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1274380161, now seen corresponding path program 1 times [2021-11-23 16:48:37,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:37,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610224133] [2021-11-23 16:48:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:37,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:37,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:37,527 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:37,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-11-23 16:48:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:37,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:37,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:39,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:39,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:39,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610224133] [2021-11-23 16:48:39,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610224133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:39,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:39,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:39,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585618529] [2021-11-23 16:48:39,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:39,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:39,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:39,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:39,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:39,420 INFO L87 Difference]: Start difference. First operand 1066 states and 1416 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:40,485 INFO L93 Difference]: Finished difference Result 1150 states and 1548 transitions. [2021-11-23 16:48:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:40,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:40,486 INFO L225 Difference]: With dead ends: 1150 [2021-11-23 16:48:40,487 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:40,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:40,487 INFO L933 BasicCegarLoop]: 1371 mSDtfsCounter, 81 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 3806 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 637 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:40,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 3806 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1188 Invalid, 0 Unknown, 637 Unchecked, 1.0s Time] [2021-11-23 16:48:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:40,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3645130183220828) internal successors, (1415), 1065 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1415 transitions. [2021-11-23 16:48:40,504 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1415 transitions. Word has length 115 [2021-11-23 16:48:40,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:40,504 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1415 transitions. [2021-11-23 16:48:40,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:40,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1415 transitions. [2021-11-23 16:48:40,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:40,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:40,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:40,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:40,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:40,706 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:40,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1221636080, now seen corresponding path program 1 times [2021-11-23 16:48:40,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:40,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443298619] [2021-11-23 16:48:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:40,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:40,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:40,708 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:40,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-11-23 16:48:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:41,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:41,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:42,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:42,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443298619] [2021-11-23 16:48:42,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443298619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:42,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:42,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:42,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746184186] [2021-11-23 16:48:42,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:42,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:42,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:42,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:42,623 INFO L87 Difference]: Start difference. First operand 1066 states and 1415 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:43,675 INFO L93 Difference]: Finished difference Result 1152 states and 1549 transitions. [2021-11-23 16:48:43,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:43,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:43,677 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:48:43,677 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:43,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:43,678 INFO L933 BasicCegarLoop]: 1370 mSDtfsCounter, 80 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 3834 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 607 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:43,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 3834 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1186 Invalid, 0 Unknown, 607 Unchecked, 1.0s Time] [2021-11-23 16:48:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:43,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:43,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3635486981677918) internal successors, (1414), 1065 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:43,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1414 transitions. [2021-11-23 16:48:43,696 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1414 transitions. Word has length 115 [2021-11-23 16:48:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:43,696 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1414 transitions. [2021-11-23 16:48:43,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1414 transitions. [2021-11-23 16:48:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:43,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:43,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:43,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:43,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:43,899 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:43,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:43,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1202685921, now seen corresponding path program 1 times [2021-11-23 16:48:43,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:43,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387445934] [2021-11-23 16:48:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:43,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:43,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:43,901 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:43,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-11-23 16:48:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:44,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:44,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:45,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:45,640 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:45,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387445934] [2021-11-23 16:48:45,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387445934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:45,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:45,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:45,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68785770] [2021-11-23 16:48:45,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:45,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:45,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:45,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:45,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:45,642 INFO L87 Difference]: Start difference. First operand 1066 states and 1414 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:46,293 INFO L93 Difference]: Finished difference Result 1150 states and 1546 transitions. [2021-11-23 16:48:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:46,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:46,295 INFO L225 Difference]: With dead ends: 1150 [2021-11-23 16:48:46,295 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:46,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:46,295 INFO L933 BasicCegarLoop]: 1369 mSDtfsCounter, 75 mSDsluCounter, 4007 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 5376 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2267 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:46,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 5376 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 544 Invalid, 0 Unknown, 2267 Unchecked, 0.6s Time] [2021-11-23 16:48:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3625843780135005) internal successors, (1413), 1065 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1413 transitions. [2021-11-23 16:48:46,313 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1413 transitions. Word has length 115 [2021-11-23 16:48:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:46,313 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1413 transitions. [2021-11-23 16:48:46,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:46,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1413 transitions. [2021-11-23 16:48:46,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:46,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:46,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:46,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:46,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:46,515 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:46,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash 784703793, now seen corresponding path program 1 times [2021-11-23 16:48:46,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:46,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246686196] [2021-11-23 16:48:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:46,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:46,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:46,519 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:46,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-11-23 16:48:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:46,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:46,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:48,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:48,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:48,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246686196] [2021-11-23 16:48:48,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246686196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:48,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:48,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:48,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600459239] [2021-11-23 16:48:48,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:48,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:48,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:48,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:48,287 INFO L87 Difference]: Start difference. First operand 1066 states and 1413 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:49,040 INFO L93 Difference]: Finished difference Result 1150 states and 1545 transitions. [2021-11-23 16:48:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:49,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:49,042 INFO L225 Difference]: With dead ends: 1150 [2021-11-23 16:48:49,042 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:49,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:49,043 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 81 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 4567 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1149 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:49,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 4567 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 641 Invalid, 0 Unknown, 1149 Unchecked, 0.7s Time] [2021-11-23 16:48:49,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:49,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3616200578592093) internal successors, (1412), 1065 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1412 transitions. [2021-11-23 16:48:49,063 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1412 transitions. Word has length 115 [2021-11-23 16:48:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:49,064 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1412 transitions. [2021-11-23 16:48:49,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1412 transitions. [2021-11-23 16:48:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:49,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:49,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:49,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:49,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:49,269 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash -411952931, now seen corresponding path program 1 times [2021-11-23 16:48:49,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:49,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201985124] [2021-11-23 16:48:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:49,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:49,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:49,273 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:49,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-11-23 16:48:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:49,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:49,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:51,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:51,107 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:51,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201985124] [2021-11-23 16:48:51,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201985124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:51,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:51,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:51,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201477006] [2021-11-23 16:48:51,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:51,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:51,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:51,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:51,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:51,108 INFO L87 Difference]: Start difference. First operand 1066 states and 1412 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:51,728 INFO L93 Difference]: Finished difference Result 1167 states and 1563 transitions. [2021-11-23 16:48:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:51,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:51,730 INFO L225 Difference]: With dead ends: 1167 [2021-11-23 16:48:51,730 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:51,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:51,731 INFO L933 BasicCegarLoop]: 1371 mSDtfsCounter, 78 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 4650 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1708 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:51,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 4650 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 546 Invalid, 0 Unknown, 1708 Unchecked, 0.6s Time] [2021-11-23 16:48:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.360655737704918) internal successors, (1411), 1065 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1411 transitions. [2021-11-23 16:48:51,750 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1411 transitions. Word has length 115 [2021-11-23 16:48:51,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:51,751 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1411 transitions. [2021-11-23 16:48:51,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1411 transitions. [2021-11-23 16:48:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:51,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:51,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:51,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:51,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:51,953 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:51,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1970817263, now seen corresponding path program 1 times [2021-11-23 16:48:51,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:51,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105410560] [2021-11-23 16:48:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:51,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:51,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:51,955 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:51,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-11-23 16:48:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:52,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:52,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:53,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:53,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:53,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105410560] [2021-11-23 16:48:53,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105410560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:53,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:53,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:53,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166818640] [2021-11-23 16:48:53,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:53,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:53,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:53,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:53,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:53,760 INFO L87 Difference]: Start difference. First operand 1066 states and 1411 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:54,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:54,794 INFO L93 Difference]: Finished difference Result 1155 states and 1548 transitions. [2021-11-23 16:48:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:54,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:54,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:54,796 INFO L225 Difference]: With dead ends: 1155 [2021-11-23 16:48:54,796 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:54,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:54,796 INFO L933 BasicCegarLoop]: 1366 mSDtfsCounter, 79 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 4538 SdHoareTripleChecker+Invalid, 2353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1174 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:54,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 4538 Invalid, 2353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1178 Invalid, 0 Unknown, 1174 Unchecked, 1.0s Time] [2021-11-23 16:48:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:54,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3596914175506267) internal successors, (1410), 1065 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1410 transitions. [2021-11-23 16:48:54,813 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1410 transitions. Word has length 115 [2021-11-23 16:48:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:54,814 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1410 transitions. [2021-11-23 16:48:54,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1410 transitions. [2021-11-23 16:48:54,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:54,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:54,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:54,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:55,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:55,016 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1814958715, now seen corresponding path program 1 times [2021-11-23 16:48:55,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:55,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964808910] [2021-11-23 16:48:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:55,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:55,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:55,019 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:55,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-11-23 16:48:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:55,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:55,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:56,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:56,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:56,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964808910] [2021-11-23 16:48:56,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964808910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:56,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:56,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:56,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161537415] [2021-11-23 16:48:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:56,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:56,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:56,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:56,829 INFO L87 Difference]: Start difference. First operand 1066 states and 1410 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:48:57,453 INFO L93 Difference]: Finished difference Result 1152 states and 1544 transitions. [2021-11-23 16:48:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:48:57,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:48:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:48:57,455 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:48:57,455 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:48:57,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:48:57,456 INFO L933 BasicCegarLoop]: 1365 mSDtfsCounter, 90 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 3158 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 631 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:48:57,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 3158 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 540 Invalid, 0 Unknown, 631 Unchecked, 0.6s Time] [2021-11-23 16:48:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:48:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:48:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3587270973963357) internal successors, (1409), 1065 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1409 transitions. [2021-11-23 16:48:57,475 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1409 transitions. Word has length 115 [2021-11-23 16:48:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:48:57,475 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1409 transitions. [2021-11-23 16:48:57,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:48:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1409 transitions. [2021-11-23 16:48:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:48:57,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:48:57,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:48:57,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-11-23 16:48:57,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:48:57,677 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:48:57,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:48:57,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1215680688, now seen corresponding path program 1 times [2021-11-23 16:48:57,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:48:57,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617429237] [2021-11-23 16:48:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:48:57,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:48:57,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:48:57,684 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:48:57,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-11-23 16:48:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:48:58,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:48:58,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:48:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:48:59,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:48:59,591 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:48:59,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617429237] [2021-11-23 16:48:59,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617429237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:48:59,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:48:59,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:48:59,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484417279] [2021-11-23 16:48:59,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:48:59,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:48:59,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:48:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:48:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:48:59,592 INFO L87 Difference]: Start difference. First operand 1066 states and 1409 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:00,231 INFO L93 Difference]: Finished difference Result 1155 states and 1546 transitions. [2021-11-23 16:49:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:00,232 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:00,233 INFO L225 Difference]: With dead ends: 1155 [2021-11-23 16:49:00,233 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:00,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:00,234 INFO L933 BasicCegarLoop]: 1364 mSDtfsCounter, 89 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1169 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:00,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 3895 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 539 Invalid, 0 Unknown, 1169 Unchecked, 0.6s Time] [2021-11-23 16:49:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3577627772420444) internal successors, (1408), 1065 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:00,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1408 transitions. [2021-11-23 16:49:00,252 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1408 transitions. Word has length 115 [2021-11-23 16:49:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:00,253 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1408 transitions. [2021-11-23 16:49:00,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1408 transitions. [2021-11-23 16:49:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:00,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:00,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:00,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:00,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:00,455 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:00,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:00,455 INFO L85 PathProgramCache]: Analyzing trace with hash -256200210, now seen corresponding path program 1 times [2021-11-23 16:49:00,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:00,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937435786] [2021-11-23 16:49:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:00,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:00,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:00,457 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:00,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-11-23 16:49:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:00,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:00,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:02,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:02,404 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:02,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937435786] [2021-11-23 16:49:02,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937435786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:02,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:02,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:02,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306324364] [2021-11-23 16:49:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:02,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:02,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:02,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:02,407 INFO L87 Difference]: Start difference. First operand 1066 states and 1408 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:02,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:02,448 INFO L93 Difference]: Finished difference Result 1152 states and 1542 transitions. [2021-11-23 16:49:02,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:49:02,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:02,450 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:02,450 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:02,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:02,451 INFO L933 BasicCegarLoop]: 1364 mSDtfsCounter, 80 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 599 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:02,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 3193 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 599 Unchecked, 0.0s Time] [2021-11-23 16:49:02,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3567984570877532) internal successors, (1407), 1065 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1407 transitions. [2021-11-23 16:49:02,489 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1407 transitions. Word has length 115 [2021-11-23 16:49:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:02,489 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1407 transitions. [2021-11-23 16:49:02,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1407 transitions. [2021-11-23 16:49:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:02,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:02,491 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:02,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:02,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:02,691 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:02,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:02,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1520410929, now seen corresponding path program 1 times [2021-11-23 16:49:02,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:02,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352955177] [2021-11-23 16:49:02,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:02,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:02,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:02,693 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:02,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-11-23 16:49:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:03,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:03,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:04,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:04,511 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:04,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352955177] [2021-11-23 16:49:04,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352955177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:04,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:04,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:04,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153263297] [2021-11-23 16:49:04,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:04,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:04,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:04,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:04,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:04,513 INFO L87 Difference]: Start difference. First operand 1066 states and 1407 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:05,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:05,560 INFO L93 Difference]: Finished difference Result 1155 states and 1544 transitions. [2021-11-23 16:49:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:05,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:05,561 INFO L225 Difference]: With dead ends: 1155 [2021-11-23 16:49:05,562 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:05,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:05,562 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 65 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3829 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 596 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:05,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 3829 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1170 Invalid, 0 Unknown, 596 Unchecked, 1.0s Time] [2021-11-23 16:49:05,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:05,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3558341369334619) internal successors, (1406), 1065 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1406 transitions. [2021-11-23 16:49:05,582 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1406 transitions. Word has length 115 [2021-11-23 16:49:05,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:05,582 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1406 transitions. [2021-11-23 16:49:05,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1406 transitions. [2021-11-23 16:49:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:05,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:05,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:05,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:05,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:05,784 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:05,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:05,784 INFO L85 PathProgramCache]: Analyzing trace with hash 392493866, now seen corresponding path program 1 times [2021-11-23 16:49:05,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:05,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382561729] [2021-11-23 16:49:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:05,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:05,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:05,786 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:05,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-11-23 16:49:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:06,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:06,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:07,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:07,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:07,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382561729] [2021-11-23 16:49:07,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382561729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:07,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:07,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:07,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8921393] [2021-11-23 16:49:07,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:07,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:07,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:07,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:07,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:07,601 INFO L87 Difference]: Start difference. First operand 1066 states and 1406 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:08,413 INFO L93 Difference]: Finished difference Result 1152 states and 1540 transitions. [2021-11-23 16:49:08,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:08,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:08,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:08,416 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:08,416 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:08,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:08,416 INFO L933 BasicCegarLoop]: 1361 mSDtfsCounter, 65 mSDsluCounter, 3911 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5272 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1699 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:08,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5272 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 634 Invalid, 0 Unknown, 1699 Unchecked, 0.8s Time] [2021-11-23 16:49:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3548698167791706) internal successors, (1405), 1065 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1405 transitions. [2021-11-23 16:49:08,435 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1405 transitions. Word has length 115 [2021-11-23 16:49:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:08,435 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1405 transitions. [2021-11-23 16:49:08,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:08,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1405 transitions. [2021-11-23 16:49:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:08,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:08,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:08,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:08,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:08,638 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:08,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:08,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1072861829, now seen corresponding path program 1 times [2021-11-23 16:49:08,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:08,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718998985] [2021-11-23 16:49:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:08,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:08,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:08,640 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:08,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-11-23 16:49:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:09,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:09,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:10,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:10,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:10,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718998985] [2021-11-23 16:49:10,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718998985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:10,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:10,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:10,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734441757] [2021-11-23 16:49:10,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:10,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:10,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:10,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:10,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:10,648 INFO L87 Difference]: Start difference. First operand 1066 states and 1405 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:11,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:11,292 INFO L93 Difference]: Finished difference Result 1152 states and 1539 transitions. [2021-11-23 16:49:11,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:11,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:11,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:11,294 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:11,294 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:11,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:11,295 INFO L933 BasicCegarLoop]: 1360 mSDtfsCounter, 75 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1159 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:11,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 3893 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 535 Invalid, 0 Unknown, 1159 Unchecked, 0.6s Time] [2021-11-23 16:49:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:11,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3539054966248794) internal successors, (1404), 1065 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1404 transitions. [2021-11-23 16:49:11,314 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1404 transitions. Word has length 115 [2021-11-23 16:49:11,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:11,314 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1404 transitions. [2021-11-23 16:49:11,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1404 transitions. [2021-11-23 16:49:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:11,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:11,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:11,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:11,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:11,516 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:11,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:11,516 INFO L85 PathProgramCache]: Analyzing trace with hash -749712155, now seen corresponding path program 1 times [2021-11-23 16:49:11,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:11,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68908668] [2021-11-23 16:49:11,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:11,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:11,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:11,518 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:11,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-11-23 16:49:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:11,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:11,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:13,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:13,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:13,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68908668] [2021-11-23 16:49:13,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68908668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:13,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:13,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:13,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792481530] [2021-11-23 16:49:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:13,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:13,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:13,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:13,401 INFO L87 Difference]: Start difference. First operand 1066 states and 1404 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:14,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:14,472 INFO L93 Difference]: Finished difference Result 1152 states and 1538 transitions. [2021-11-23 16:49:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:14,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:14,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:14,474 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:14,474 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:14,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:14,475 INFO L933 BasicCegarLoop]: 1359 mSDtfsCounter, 80 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 625 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:14,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 3794 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1164 Invalid, 0 Unknown, 625 Unchecked, 1.0s Time] [2021-11-23 16:49:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3529411764705883) internal successors, (1403), 1065 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1403 transitions. [2021-11-23 16:49:14,494 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1403 transitions. Word has length 115 [2021-11-23 16:49:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:14,495 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1403 transitions. [2021-11-23 16:49:14,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1403 transitions. [2021-11-23 16:49:14,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:14,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:14,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:14,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:14,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:14,697 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:14,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:14,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2013706400, now seen corresponding path program 1 times [2021-11-23 16:49:14,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:14,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440452201] [2021-11-23 16:49:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:14,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:14,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:14,699 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:14,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-11-23 16:49:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:15,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:15,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:16,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:16,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:16,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440452201] [2021-11-23 16:49:16,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440452201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:16,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:16,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:16,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753827086] [2021-11-23 16:49:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:16,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:16,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:16,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:16,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:16,467 INFO L87 Difference]: Start difference. First operand 1066 states and 1403 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:16,508 INFO L93 Difference]: Finished difference Result 1155 states and 1540 transitions. [2021-11-23 16:49:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:49:16,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:16,510 INFO L225 Difference]: With dead ends: 1155 [2021-11-23 16:49:16,510 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:16,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:16,511 INFO L933 BasicCegarLoop]: 1359 mSDtfsCounter, 65 mSDsluCounter, 4017 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5376 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2222 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:16,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5376 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 2222 Unchecked, 0.0s Time] [2021-11-23 16:49:16,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:16,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.351976856316297) internal successors, (1402), 1065 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1402 transitions. [2021-11-23 16:49:16,528 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1402 transitions. Word has length 115 [2021-11-23 16:49:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:16,528 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1402 transitions. [2021-11-23 16:49:16,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1402 transitions. [2021-11-23 16:49:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:16,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:16,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:16,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:16,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:16,730 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:16,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:16,731 INFO L85 PathProgramCache]: Analyzing trace with hash -101018079, now seen corresponding path program 1 times [2021-11-23 16:49:16,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:16,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237183699] [2021-11-23 16:49:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:16,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:16,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:16,734 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:16,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-11-23 16:49:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:17,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:17,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:18,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:18,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:18,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237183699] [2021-11-23 16:49:18,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237183699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:18,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:18,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:18,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026426540] [2021-11-23 16:49:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:18,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:18,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:18,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:18,568 INFO L87 Difference]: Start difference. First operand 1066 states and 1402 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:19,597 INFO L93 Difference]: Finished difference Result 1152 states and 1536 transitions. [2021-11-23 16:49:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:19,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:19,599 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:19,599 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:19,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:19,600 INFO L933 BasicCegarLoop]: 1357 mSDtfsCounter, 65 mSDsluCounter, 4649 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6006 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2219 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:19,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 6006 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1160 Invalid, 0 Unknown, 2219 Unchecked, 1.0s Time] [2021-11-23 16:49:19,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3510125361620058) internal successors, (1401), 1065 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1401 transitions. [2021-11-23 16:49:19,619 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1401 transitions. Word has length 115 [2021-11-23 16:49:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:19,619 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1401 transitions. [2021-11-23 16:49:19,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1401 transitions. [2021-11-23 16:49:19,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:19,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:19,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:19,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:19,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:19,826 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:19,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash -718530888, now seen corresponding path program 1 times [2021-11-23 16:49:19,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:19,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096897459] [2021-11-23 16:49:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:19,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:19,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:19,828 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:19,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-11-23 16:49:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:20,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:20,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:21,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:21,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:21,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096897459] [2021-11-23 16:49:21,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096897459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:21,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:21,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:21,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950021394] [2021-11-23 16:49:21,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:21,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:21,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:21,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:21,659 INFO L87 Difference]: Start difference. First operand 1066 states and 1401 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:22,279 INFO L93 Difference]: Finished difference Result 1150 states and 1533 transitions. [2021-11-23 16:49:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:22,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:22,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:22,281 INFO L225 Difference]: With dead ends: 1150 [2021-11-23 16:49:22,281 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:22,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:22,282 INFO L933 BasicCegarLoop]: 1356 mSDtfsCounter, 75 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1123 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:22,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 3917 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 531 Invalid, 0 Unknown, 1123 Unchecked, 0.6s Time] [2021-11-23 16:49:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3500482160077145) internal successors, (1400), 1065 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:22,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1400 transitions. [2021-11-23 16:49:22,303 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1400 transitions. Word has length 115 [2021-11-23 16:49:22,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:22,303 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1400 transitions. [2021-11-23 16:49:22,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:22,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1400 transitions. [2021-11-23 16:49:22,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:22,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:22,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:22,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:22,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:22,505 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:22,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash -476354143, now seen corresponding path program 1 times [2021-11-23 16:49:22,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:22,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354016387] [2021-11-23 16:49:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:22,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:22,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:22,507 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:22,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-11-23 16:49:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:22,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:22,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:24,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:24,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:24,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354016387] [2021-11-23 16:49:24,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354016387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:24,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:24,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:24,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747883016] [2021-11-23 16:49:24,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:24,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:24,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:24,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:24,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:24,254 INFO L87 Difference]: Start difference. First operand 1066 states and 1400 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:24,863 INFO L93 Difference]: Finished difference Result 1152 states and 1534 transitions. [2021-11-23 16:49:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:24,865 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:24,865 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:24,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:24,866 INFO L933 BasicCegarLoop]: 1355 mSDtfsCounter, 90 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 592 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:24,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 3177 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 530 Invalid, 0 Unknown, 592 Unchecked, 0.6s Time] [2021-11-23 16:49:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3490838958534233) internal successors, (1399), 1065 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1399 transitions. [2021-11-23 16:49:24,884 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1399 transitions. Word has length 115 [2021-11-23 16:49:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:24,884 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1399 transitions. [2021-11-23 16:49:24,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:24,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1399 transitions. [2021-11-23 16:49:24,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:24,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:24,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:24,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:25,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:25,087 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:25,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:25,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1125048219, now seen corresponding path program 1 times [2021-11-23 16:49:25,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:25,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162103578] [2021-11-23 16:49:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:25,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:25,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:25,089 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:25,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-11-23 16:49:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:25,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:25,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:26,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:26,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:26,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162103578] [2021-11-23 16:49:26,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162103578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:26,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:26,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:26,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850622965] [2021-11-23 16:49:26,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:26,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:26,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:26,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:26,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:26,854 INFO L87 Difference]: Start difference. First operand 1066 states and 1399 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:27,843 INFO L93 Difference]: Finished difference Result 1152 states and 1533 transitions. [2021-11-23 16:49:27,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:27,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:27,845 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:27,845 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:27,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:27,846 INFO L933 BasicCegarLoop]: 1354 mSDtfsCounter, 65 mSDsluCounter, 3942 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5296 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1647 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:27,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5296 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1154 Invalid, 0 Unknown, 1647 Unchecked, 0.9s Time] [2021-11-23 16:49:27,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3481195756991322) internal successors, (1398), 1065 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1398 transitions. [2021-11-23 16:49:27,865 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1398 transitions. Word has length 115 [2021-11-23 16:49:27,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:27,865 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1398 transitions. [2021-11-23 16:49:27,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:27,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1398 transitions. [2021-11-23 16:49:27,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:27,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:27,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:27,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:28,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:28,067 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1904820616, now seen corresponding path program 1 times [2021-11-23 16:49:28,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:28,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909973057] [2021-11-23 16:49:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:28,068 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:28,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:28,069 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:28,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-11-23 16:49:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:28,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:28,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:29,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:29,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:29,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909973057] [2021-11-23 16:49:29,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909973057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:29,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:29,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:29,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500742950] [2021-11-23 16:49:29,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:29,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:29,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:29,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:29,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:29,952 INFO L87 Difference]: Start difference. First operand 1066 states and 1398 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:30,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:30,541 INFO L93 Difference]: Finished difference Result 1071 states and 1402 transitions. [2021-11-23 16:49:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:30,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:30,542 INFO L225 Difference]: With dead ends: 1071 [2021-11-23 16:49:30,543 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:30,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:30,543 INFO L933 BasicCegarLoop]: 1353 mSDtfsCounter, 89 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 619 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:30,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 3146 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 528 Invalid, 0 Unknown, 619 Unchecked, 0.5s Time] [2021-11-23 16:49:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.347155255544841) internal successors, (1397), 1065 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1397 transitions. [2021-11-23 16:49:30,562 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1397 transitions. Word has length 115 [2021-11-23 16:49:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:30,562 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1397 transitions. [2021-11-23 16:49:30,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1397 transitions. [2021-11-23 16:49:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:30,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:30,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:30,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:30,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:30,764 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:30,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1101081512, now seen corresponding path program 1 times [2021-11-23 16:49:30,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:30,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866305690] [2021-11-23 16:49:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:30,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:30,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:30,766 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:30,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-11-23 16:49:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:31,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:31,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:32,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:32,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:32,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866305690] [2021-11-23 16:49:32,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866305690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:32,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:32,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:32,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43288831] [2021-11-23 16:49:32,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:32,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:32,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:32,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:32,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:32,556 INFO L87 Difference]: Start difference. First operand 1066 states and 1397 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:33,147 INFO L93 Difference]: Finished difference Result 1073 states and 1403 transitions. [2021-11-23 16:49:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:33,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:33,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:33,149 INFO L225 Difference]: With dead ends: 1073 [2021-11-23 16:49:33,149 INFO L226 Difference]: Without dead ends: 1068 [2021-11-23 16:49:33,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:33,149 INFO L933 BasicCegarLoop]: 1352 mSDtfsCounter, 76 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 3914 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1123 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:33,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 3914 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 527 Invalid, 0 Unknown, 1123 Unchecked, 0.5s Time] [2021-11-23 16:49:33,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-23 16:49:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1066. [2021-11-23 16:49:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3461909353905497) internal successors, (1396), 1065 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1396 transitions. [2021-11-23 16:49:33,171 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1396 transitions. Word has length 115 [2021-11-23 16:49:33,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:33,171 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1396 transitions. [2021-11-23 16:49:33,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:33,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1396 transitions. [2021-11-23 16:49:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:33,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:33,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:33,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:33,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:33,373 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:33,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:33,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1281688682, now seen corresponding path program 1 times [2021-11-23 16:49:33,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:33,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304221732] [2021-11-23 16:49:33,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:33,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:33,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:33,375 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:33,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-11-23 16:49:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:33,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:33,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:35,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:35,076 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:35,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304221732] [2021-11-23 16:49:35,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304221732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:35,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:35,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:35,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860859158] [2021-11-23 16:49:35,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:35,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:35,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:35,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:35,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:35,078 INFO L87 Difference]: Start difference. First operand 1066 states and 1396 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:35,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:35,661 INFO L93 Difference]: Finished difference Result 1083 states and 1414 transitions. [2021-11-23 16:49:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:35,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:35,663 INFO L225 Difference]: With dead ends: 1083 [2021-11-23 16:49:35,663 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:35,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:35,664 INFO L933 BasicCegarLoop]: 1355 mSDtfsCounter, 89 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:35,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 2421 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 530 Invalid, 0 Unknown, 57 Unchecked, 0.5s Time] [2021-11-23 16:49:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3452266152362584) internal successors, (1395), 1065 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1395 transitions. [2021-11-23 16:49:35,686 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1395 transitions. Word has length 115 [2021-11-23 16:49:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:35,686 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1395 transitions. [2021-11-23 16:49:35,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:35,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1395 transitions. [2021-11-23 16:49:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:35,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:35,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:35,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:35,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:35,905 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1611160572, now seen corresponding path program 1 times [2021-11-23 16:49:35,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:35,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544555396] [2021-11-23 16:49:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:35,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:35,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:35,907 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:35,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-11-23 16:49:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:36,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:36,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:37,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:37,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:37,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544555396] [2021-11-23 16:49:37,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544555396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:37,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:37,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:37,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808225507] [2021-11-23 16:49:37,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:37,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:37,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:37,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:37,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:37,657 INFO L87 Difference]: Start difference. First operand 1066 states and 1395 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:38,234 INFO L93 Difference]: Finished difference Result 1152 states and 1529 transitions. [2021-11-23 16:49:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:38,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:38,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:38,236 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:38,236 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:38,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:38,237 INFO L933 BasicCegarLoop]: 1350 mSDtfsCounter, 90 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:38,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2435 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 525 Invalid, 0 Unknown, 61 Unchecked, 0.5s Time] [2021-11-23 16:49:38,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:38,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3442622950819672) internal successors, (1394), 1065 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:38,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1394 transitions. [2021-11-23 16:49:38,254 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1394 transitions. Word has length 115 [2021-11-23 16:49:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:38,255 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1394 transitions. [2021-11-23 16:49:38,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1394 transitions. [2021-11-23 16:49:38,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:38,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:38,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:38,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:38,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:38,457 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash 345944937, now seen corresponding path program 1 times [2021-11-23 16:49:38,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:38,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848576534] [2021-11-23 16:49:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:38,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:38,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:38,459 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:38,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-11-23 16:49:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:38,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:38,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:40,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:40,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:40,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848576534] [2021-11-23 16:49:40,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848576534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:40,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:40,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:40,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847763620] [2021-11-23 16:49:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:40,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:40,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:40,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:40,317 INFO L87 Difference]: Start difference. First operand 1066 states and 1394 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:41,049 INFO L93 Difference]: Finished difference Result 1071 states and 1398 transitions. [2021-11-23 16:49:41,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:41,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:41,051 INFO L225 Difference]: With dead ends: 1071 [2021-11-23 16:49:41,051 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:41,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:41,051 INFO L933 BasicCegarLoop]: 1349 mSDtfsCounter, 65 mSDsluCounter, 3913 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5262 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1661 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:41,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5262 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 622 Invalid, 0 Unknown, 1661 Unchecked, 0.7s Time] [2021-11-23 16:49:41,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:41,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3432979749276759) internal successors, (1393), 1065 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1393 transitions. [2021-11-23 16:49:41,068 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1393 transitions. Word has length 115 [2021-11-23 16:49:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:41,068 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1393 transitions. [2021-11-23 16:49:41,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1393 transitions. [2021-11-23 16:49:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:41,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:41,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:41,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:41,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:41,270 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:41,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:41,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1131938147, now seen corresponding path program 1 times [2021-11-23 16:49:41,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:41,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468775756] [2021-11-23 16:49:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:41,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:41,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:41,273 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:41,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-11-23 16:49:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:41,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:41,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:42,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:42,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:42,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468775756] [2021-11-23 16:49:42,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468775756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:42,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:42,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:42,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725561693] [2021-11-23 16:49:42,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:42,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:42,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:42,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:42,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:42,975 INFO L87 Difference]: Start difference. First operand 1066 states and 1393 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:43,976 INFO L93 Difference]: Finished difference Result 1150 states and 1525 transitions. [2021-11-23 16:49:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:43,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:43,978 INFO L225 Difference]: With dead ends: 1150 [2021-11-23 16:49:43,978 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:43,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:43,979 INFO L933 BasicCegarLoop]: 1348 mSDtfsCounter, 81 mSDsluCounter, 3909 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 5257 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1662 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:43,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 5257 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1142 Invalid, 0 Unknown, 1662 Unchecked, 0.9s Time] [2021-11-23 16:49:43,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:43,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3423336547733848) internal successors, (1392), 1065 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1392 transitions. [2021-11-23 16:49:43,997 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1392 transitions. Word has length 115 [2021-11-23 16:49:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:43,997 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1392 transitions. [2021-11-23 16:49:43,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1392 transitions. [2021-11-23 16:49:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:43,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:43,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:44,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:44,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:44,199 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:44,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:44,200 INFO L85 PathProgramCache]: Analyzing trace with hash 204013820, now seen corresponding path program 1 times [2021-11-23 16:49:44,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:44,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690087142] [2021-11-23 16:49:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:44,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:44,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:44,201 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:44,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-11-23 16:49:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:44,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:44,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:45,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:45,993 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:45,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690087142] [2021-11-23 16:49:45,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690087142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:45,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:45,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:45,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272547991] [2021-11-23 16:49:45,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:45,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:45,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:45,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:45,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:45,995 INFO L87 Difference]: Start difference. First operand 1066 states and 1392 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:47,001 INFO L93 Difference]: Finished difference Result 1152 states and 1526 transitions. [2021-11-23 16:49:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:47,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:47,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:47,003 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:47,003 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:47,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:47,004 INFO L933 BasicCegarLoop]: 1347 mSDtfsCounter, 80 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 583 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:47,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 3812 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1140 Invalid, 0 Unknown, 583 Unchecked, 0.9s Time] [2021-11-23 16:49:47,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:47,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3413693346190936) internal successors, (1391), 1065 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1391 transitions. [2021-11-23 16:49:47,033 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1391 transitions. Word has length 115 [2021-11-23 16:49:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:47,034 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1391 transitions. [2021-11-23 16:49:47,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1391 transitions. [2021-11-23 16:49:47,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:47,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:47,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:47,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:47,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:47,251 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash -855451567, now seen corresponding path program 1 times [2021-11-23 16:49:47,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:47,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063777724] [2021-11-23 16:49:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:47,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:47,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:47,253 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:47,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2021-11-23 16:49:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:47,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:47,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:49,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:49,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:49,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063777724] [2021-11-23 16:49:49,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063777724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:49,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:49,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:49,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001151692] [2021-11-23 16:49:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:49,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:49,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:49,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:49,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:49,107 INFO L87 Difference]: Start difference. First operand 1066 states and 1391 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:49,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:49,705 INFO L93 Difference]: Finished difference Result 1150 states and 1523 transitions. [2021-11-23 16:49:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:49,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:49,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:49,707 INFO L225 Difference]: With dead ends: 1150 [2021-11-23 16:49:49,707 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:49,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:49,708 INFO L933 BasicCegarLoop]: 1346 mSDtfsCounter, 91 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 582 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:49,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 3169 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 521 Invalid, 0 Unknown, 582 Unchecked, 0.5s Time] [2021-11-23 16:49:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3404050144648023) internal successors, (1390), 1065 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1390 transitions. [2021-11-23 16:49:49,728 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1390 transitions. Word has length 115 [2021-11-23 16:49:49,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:49,728 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1390 transitions. [2021-11-23 16:49:49,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1390 transitions. [2021-11-23 16:49:49,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:49,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:49,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:49,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (97)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:49,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:49,931 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1618560164, now seen corresponding path program 1 times [2021-11-23 16:49:49,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:49,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138539075] [2021-11-23 16:49:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:49,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:49,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:49,933 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:49,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2021-11-23 16:49:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:50,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:50,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:51,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:51,774 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:51,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138539075] [2021-11-23 16:49:51,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138539075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:51,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:51,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:51,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628555766] [2021-11-23 16:49:51,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:51,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:51,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:51,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:51,776 INFO L87 Difference]: Start difference. First operand 1066 states and 1390 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:52,534 INFO L93 Difference]: Finished difference Result 1152 states and 1524 transitions. [2021-11-23 16:49:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:52,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:52,536 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:52,536 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:52,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:52,537 INFO L933 BasicCegarLoop]: 1345 mSDtfsCounter, 65 mSDsluCounter, 3201 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1100 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:52,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 4546 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 618 Invalid, 0 Unknown, 1100 Unchecked, 0.7s Time] [2021-11-23 16:49:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.339440694310511) internal successors, (1389), 1065 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1389 transitions. [2021-11-23 16:49:52,557 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1389 transitions. Word has length 115 [2021-11-23 16:49:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:52,557 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1389 transitions. [2021-11-23 16:49:52,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1389 transitions. [2021-11-23 16:49:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:52,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:52,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:52,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (98)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:52,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:52,759 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:52,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1411525145, now seen corresponding path program 1 times [2021-11-23 16:49:52,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:52,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100198784] [2021-11-23 16:49:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:52,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:52,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:52,761 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:52,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2021-11-23 16:49:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:53,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:53,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:54,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:54,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:54,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100198784] [2021-11-23 16:49:54,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100198784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:54,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:54,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:54,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914418134] [2021-11-23 16:49:54,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:54,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:54,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:54,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:54,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:54,557 INFO L87 Difference]: Start difference. First operand 1066 states and 1389 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:55,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:55,150 INFO L93 Difference]: Finished difference Result 1071 states and 1393 transitions. [2021-11-23 16:49:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:55,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:55,156 INFO L225 Difference]: With dead ends: 1071 [2021-11-23 16:49:55,156 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:55,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:55,157 INFO L933 BasicCegarLoop]: 1344 mSDtfsCounter, 75 mSDsluCounter, 4008 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 5352 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2166 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:55,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 5352 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 519 Invalid, 0 Unknown, 2166 Unchecked, 0.5s Time] [2021-11-23 16:49:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:55,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3384763741562198) internal successors, (1388), 1065 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:55,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1388 transitions. [2021-11-23 16:49:55,177 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1388 transitions. Word has length 115 [2021-11-23 16:49:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:55,177 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1388 transitions. [2021-11-23 16:49:55,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1388 transitions. [2021-11-23 16:49:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:55,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:55,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:55,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:55,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:55,379 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:55,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:55,379 INFO L85 PathProgramCache]: Analyzing trace with hash -969866088, now seen corresponding path program 1 times [2021-11-23 16:49:55,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:55,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397347068] [2021-11-23 16:49:55,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:55,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:55,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:55,381 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:55,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2021-11-23 16:49:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:55,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:55,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:57,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:57,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:57,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397347068] [2021-11-23 16:49:57,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397347068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:57,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:57,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:57,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918588952] [2021-11-23 16:49:57,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:57,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:57,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:57,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:57,205 INFO L87 Difference]: Start difference. First operand 1066 states and 1388 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:57,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:49:57,790 INFO L93 Difference]: Finished difference Result 1152 states and 1522 transitions. [2021-11-23 16:49:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:49:57,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:49:57,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:49:57,792 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:49:57,793 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:49:57,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:49:57,794 INFO L933 BasicCegarLoop]: 1343 mSDtfsCounter, 90 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:49:57,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2428 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 518 Invalid, 0 Unknown, 61 Unchecked, 0.5s Time] [2021-11-23 16:49:57,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:49:57,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:49:57,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3375120540019287) internal successors, (1387), 1065 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:57,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1387 transitions. [2021-11-23 16:49:57,825 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1387 transitions. Word has length 115 [2021-11-23 16:49:57,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:49:57,825 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1387 transitions. [2021-11-23 16:49:57,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:49:57,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1387 transitions. [2021-11-23 16:49:57,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:49:57,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:49:57,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:49:57,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (100)] Forceful destruction successful, exit code 0 [2021-11-23 16:49:58,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:49:58,042 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:49:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:49:58,043 INFO L85 PathProgramCache]: Analyzing trace with hash 928914825, now seen corresponding path program 1 times [2021-11-23 16:49:58,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:49:58,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49147840] [2021-11-23 16:49:58,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:49:58,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:49:58,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:49:58,045 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:49:58,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2021-11-23 16:49:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:49:58,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:49:58,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:49:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:49:59,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:49:59,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:49:59,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49147840] [2021-11-23 16:49:59,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49147840] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:49:59,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:49:59,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:49:59,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891394289] [2021-11-23 16:49:59,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:49:59,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:49:59,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:49:59,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:49:59,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:49:59,935 INFO L87 Difference]: Start difference. First operand 1066 states and 1387 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:00,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:00,967 INFO L93 Difference]: Finished difference Result 1150 states and 1519 transitions. [2021-11-23 16:50:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:00,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:00,969 INFO L225 Difference]: With dead ends: 1150 [2021-11-23 16:50:00,969 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:00,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:00,970 INFO L933 BasicCegarLoop]: 1342 mSDtfsCounter, 81 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 3777 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:00,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 3777 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1130 Invalid, 0 Unknown, 608 Unchecked, 1.0s Time] [2021-11-23 16:50:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3365477338476375) internal successors, (1386), 1065 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1386 transitions. [2021-11-23 16:50:00,990 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1386 transitions. Word has length 115 [2021-11-23 16:50:00,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:00,990 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1386 transitions. [2021-11-23 16:50:00,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:00,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1386 transitions. [2021-11-23 16:50:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:00,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:00,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:01,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (101)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:01,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:01,194 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:01,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1067800529, now seen corresponding path program 1 times [2021-11-23 16:50:01,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:01,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330665186] [2021-11-23 16:50:01,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:01,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:01,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:01,199 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:01,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2021-11-23 16:50:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:01,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:01,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:02,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:02,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:02,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330665186] [2021-11-23 16:50:02,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330665186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:02,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:02,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:02,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519620920] [2021-11-23 16:50:02,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:02,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:02,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:02,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:02,958 INFO L87 Difference]: Start difference. First operand 1066 states and 1386 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:03,640 INFO L93 Difference]: Finished difference Result 1190 states and 1565 transitions. [2021-11-23 16:50:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:03,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:03,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:03,642 INFO L225 Difference]: With dead ends: 1190 [2021-11-23 16:50:03,642 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:03,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:03,643 INFO L933 BasicCegarLoop]: 1349 mSDtfsCounter, 65 mSDsluCounter, 4747 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6096 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2154 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:03,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 6096 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 549 Invalid, 0 Unknown, 2154 Unchecked, 0.6s Time] [2021-11-23 16:50:03,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:03,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3355834136933462) internal successors, (1385), 1065 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1385 transitions. [2021-11-23 16:50:03,663 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1385 transitions. Word has length 115 [2021-11-23 16:50:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:03,663 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1385 transitions. [2021-11-23 16:50:03,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1385 transitions. [2021-11-23 16:50:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:03,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:03,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:03,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (102)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:03,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:03,872 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash -806810001, now seen corresponding path program 1 times [2021-11-23 16:50:03,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:03,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972547501] [2021-11-23 16:50:03,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:03,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:03,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:03,874 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:03,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2021-11-23 16:50:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:04,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:04,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:05,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:05,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:05,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972547501] [2021-11-23 16:50:05,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972547501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:05,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:05,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:05,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81344898] [2021-11-23 16:50:05,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:05,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:05,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:05,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:05,717 INFO L87 Difference]: Start difference. First operand 1066 states and 1385 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:06,331 INFO L93 Difference]: Finished difference Result 1156 states and 1523 transitions. [2021-11-23 16:50:06,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:06,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:06,333 INFO L225 Difference]: With dead ends: 1156 [2021-11-23 16:50:06,333 INFO L226 Difference]: Without dead ends: 1067 [2021-11-23 16:50:06,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:06,334 INFO L933 BasicCegarLoop]: 1340 mSDtfsCounter, 75 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 4610 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1636 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:06,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 4610 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 515 Invalid, 0 Unknown, 1636 Unchecked, 0.6s Time] [2021-11-23 16:50:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-11-23 16:50:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1066. [2021-11-23 16:50:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.334619093539055) internal successors, (1384), 1065 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1384 transitions. [2021-11-23 16:50:06,356 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1384 transitions. Word has length 115 [2021-11-23 16:50:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:06,356 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1384 transitions. [2021-11-23 16:50:06,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:06,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1384 transitions. [2021-11-23 16:50:06,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:06,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:06,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:06,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:06,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:06,581 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1105387101, now seen corresponding path program 1 times [2021-11-23 16:50:06,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:06,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758288448] [2021-11-23 16:50:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:06,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:06,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:06,583 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:06,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2021-11-23 16:50:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:07,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:07,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:08,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:08,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:08,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758288448] [2021-11-23 16:50:08,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758288448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:08,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:08,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:08,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864247458] [2021-11-23 16:50:08,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:08,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:08,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:08,401 INFO L87 Difference]: Start difference. First operand 1066 states and 1384 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:09,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:09,006 INFO L93 Difference]: Finished difference Result 1167 states and 1535 transitions. [2021-11-23 16:50:09,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:09,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:09,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:09,008 INFO L225 Difference]: With dead ends: 1167 [2021-11-23 16:50:09,008 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:09,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:09,010 INFO L933 BasicCegarLoop]: 1343 mSDtfsCounter, 89 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 576 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:09,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 3150 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 518 Invalid, 0 Unknown, 576 Unchecked, 0.6s Time] [2021-11-23 16:50:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:09,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:09,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3336547733847637) internal successors, (1383), 1065 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:09,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1383 transitions. [2021-11-23 16:50:09,042 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1383 transitions. Word has length 115 [2021-11-23 16:50:09,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:09,042 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1383 transitions. [2021-11-23 16:50:09,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:09,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1383 transitions. [2021-11-23 16:50:09,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:09,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:09,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:09,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (104)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:09,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:09,276 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:09,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1171822500, now seen corresponding path program 1 times [2021-11-23 16:50:09,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:09,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363000260] [2021-11-23 16:50:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:09,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:09,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:09,279 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:09,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2021-11-23 16:50:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:09,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:09,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:11,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:11,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:11,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:11,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363000260] [2021-11-23 16:50:11,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363000260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:11,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:11,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:11,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986412630] [2021-11-23 16:50:11,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:11,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:11,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:11,068 INFO L87 Difference]: Start difference. First operand 1066 states and 1383 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:11,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:11,806 INFO L93 Difference]: Finished difference Result 1156 states and 1521 transitions. [2021-11-23 16:50:11,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:11,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:11,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:11,809 INFO L225 Difference]: With dead ends: 1156 [2021-11-23 16:50:11,809 INFO L226 Difference]: Without dead ends: 1067 [2021-11-23 16:50:11,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:11,810 INFO L933 BasicCegarLoop]: 1338 mSDtfsCounter, 60 mSDsluCounter, 3875 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 5213 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1632 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:11,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 5213 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 611 Invalid, 0 Unknown, 1632 Unchecked, 0.7s Time] [2021-11-23 16:50:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2021-11-23 16:50:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 1066. [2021-11-23 16:50:11,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3326904532304724) internal successors, (1382), 1065 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1382 transitions. [2021-11-23 16:50:11,856 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1382 transitions. Word has length 115 [2021-11-23 16:50:11,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:11,856 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1382 transitions. [2021-11-23 16:50:11,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1382 transitions. [2021-11-23 16:50:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:11,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:11,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:11,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (105)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:12,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:12,074 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:12,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:12,075 INFO L85 PathProgramCache]: Analyzing trace with hash 740374602, now seen corresponding path program 1 times [2021-11-23 16:50:12,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:12,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130087475] [2021-11-23 16:50:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:12,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:12,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:12,076 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:12,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2021-11-23 16:50:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:12,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:12,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:13,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:13,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:13,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130087475] [2021-11-23 16:50:13,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130087475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:13,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:13,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:13,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283316100] [2021-11-23 16:50:13,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:13,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:13,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:13,852 INFO L87 Difference]: Start difference. First operand 1066 states and 1382 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:14,474 INFO L93 Difference]: Finished difference Result 1167 states and 1533 transitions. [2021-11-23 16:50:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:14,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:14,476 INFO L225 Difference]: With dead ends: 1167 [2021-11-23 16:50:14,476 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:14,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:14,477 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 89 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:14,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 2407 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 516 Invalid, 0 Unknown, 57 Unchecked, 0.6s Time] [2021-11-23 16:50:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3317261330761814) internal successors, (1381), 1065 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1381 transitions. [2021-11-23 16:50:14,497 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1381 transitions. Word has length 115 [2021-11-23 16:50:14,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:14,497 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1381 transitions. [2021-11-23 16:50:14,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1381 transitions. [2021-11-23 16:50:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:14,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:14,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:14,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (106)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:14,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:14,702 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:14,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash -661000676, now seen corresponding path program 1 times [2021-11-23 16:50:14,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:14,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239820996] [2021-11-23 16:50:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:14,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:14,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:14,704 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:14,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2021-11-23 16:50:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:15,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:15,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:16,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:16,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:16,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239820996] [2021-11-23 16:50:16,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239820996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:16,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:16,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:16,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139439722] [2021-11-23 16:50:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:16,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:16,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:16,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:16,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:16,432 INFO L87 Difference]: Start difference. First operand 1066 states and 1381 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:17,006 INFO L93 Difference]: Finished difference Result 1152 states and 1515 transitions. [2021-11-23 16:50:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:17,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:17,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:17,008 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:50:17,009 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:17,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:17,010 INFO L933 BasicCegarLoop]: 1336 mSDtfsCounter, 90 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:17,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2421 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 61 Unchecked, 0.5s Time] [2021-11-23 16:50:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:17,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.33076181292189) internal successors, (1380), 1065 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1380 transitions. [2021-11-23 16:50:17,029 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1380 transitions. Word has length 115 [2021-11-23 16:50:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:17,029 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1380 transitions. [2021-11-23 16:50:17,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:17,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1380 transitions. [2021-11-23 16:50:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:17,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:17,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:17,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (107)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:17,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:17,231 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1926959075, now seen corresponding path program 1 times [2021-11-23 16:50:17,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:17,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149948035] [2021-11-23 16:50:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:17,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:17,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:17,234 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:17,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2021-11-23 16:50:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:17,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:17,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:19,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:19,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:19,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149948035] [2021-11-23 16:50:19,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149948035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:19,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:19,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:19,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31125637] [2021-11-23 16:50:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:19,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:19,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:19,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:19,181 INFO L87 Difference]: Start difference. First operand 1066 states and 1380 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:19,251 INFO L93 Difference]: Finished difference Result 1155 states and 1517 transitions. [2021-11-23 16:50:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:19,253 INFO L225 Difference]: With dead ends: 1155 [2021-11-23 16:50:19,253 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:19,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:19,254 INFO L933 BasicCegarLoop]: 1335 mSDtfsCounter, 88 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 600 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:19,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 3094 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 600 Unchecked, 0.0s Time] [2021-11-23 16:50:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:19,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3297974927675988) internal successors, (1379), 1065 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:19,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1379 transitions. [2021-11-23 16:50:19,273 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1379 transitions. Word has length 115 [2021-11-23 16:50:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:19,273 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1379 transitions. [2021-11-23 16:50:19,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1379 transitions. [2021-11-23 16:50:19,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:19,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:19,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:19,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:19,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:19,475 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:19,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1201496803, now seen corresponding path program 1 times [2021-11-23 16:50:19,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:19,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830719327] [2021-11-23 16:50:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:19,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:19,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:19,478 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:19,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2021-11-23 16:50:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:19,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:19,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:21,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:21,230 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:21,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830719327] [2021-11-23 16:50:21,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830719327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:21,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:21,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:21,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274091152] [2021-11-23 16:50:21,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:21,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:21,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:21,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:21,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:21,232 INFO L87 Difference]: Start difference. First operand 1066 states and 1379 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:22,167 INFO L93 Difference]: Finished difference Result 1167 states and 1530 transitions. [2021-11-23 16:50:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:22,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:22,169 INFO L225 Difference]: With dead ends: 1167 [2021-11-23 16:50:22,169 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:22,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:22,170 INFO L933 BasicCegarLoop]: 1338 mSDtfsCounter, 65 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 4571 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1095 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:22,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 4571 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1073 Invalid, 0 Unknown, 1095 Unchecked, 0.9s Time] [2021-11-23 16:50:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3288331726133076) internal successors, (1378), 1065 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:22,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1378 transitions. [2021-11-23 16:50:22,190 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1378 transitions. Word has length 115 [2021-11-23 16:50:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:22,190 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1378 transitions. [2021-11-23 16:50:22,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1378 transitions. [2021-11-23 16:50:22,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:22,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:22,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:22,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:22,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:22,392 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:22,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1181273391, now seen corresponding path program 1 times [2021-11-23 16:50:22,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:22,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295265913] [2021-11-23 16:50:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:22,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:22,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:22,394 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:22,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2021-11-23 16:50:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:22,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:22,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:24,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:24,229 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:24,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295265913] [2021-11-23 16:50:24,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295265913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:24,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:24,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:24,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242166189] [2021-11-23 16:50:24,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:24,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:24,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:24,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:24,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:24,230 INFO L87 Difference]: Start difference. First operand 1066 states and 1378 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:24,278 INFO L93 Difference]: Finished difference Result 1155 states and 1515 transitions. [2021-11-23 16:50:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:50:24,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:24,279 INFO L225 Difference]: With dead ends: 1155 [2021-11-23 16:50:24,280 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:24,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:24,280 INFO L933 BasicCegarLoop]: 1334 mSDtfsCounter, 65 mSDsluCounter, 4017 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5351 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2122 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:24,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5351 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 2122 Unchecked, 0.0s Time] [2021-11-23 16:50:24,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:24,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3278688524590163) internal successors, (1377), 1065 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1377 transitions. [2021-11-23 16:50:24,300 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1377 transitions. Word has length 115 [2021-11-23 16:50:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:24,301 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1377 transitions. [2021-11-23 16:50:24,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1377 transitions. [2021-11-23 16:50:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:24,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:24,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:24,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (110)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:24,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:24,503 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:24,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1691832070, now seen corresponding path program 1 times [2021-11-23 16:50:24,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:24,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929776304] [2021-11-23 16:50:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:24,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:24,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:24,505 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:24,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2021-11-23 16:50:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:24,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:24,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:26,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:26,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:26,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929776304] [2021-11-23 16:50:26,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929776304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:26,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:26,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:26,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788628340] [2021-11-23 16:50:26,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:26,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:26,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:26,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:26,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:26,467 INFO L87 Difference]: Start difference. First operand 1066 states and 1377 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:27,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:27,048 INFO L93 Difference]: Finished difference Result 1152 states and 1511 transitions. [2021-11-23 16:50:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:27,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:27,049 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:50:27,049 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:27,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:27,050 INFO L933 BasicCegarLoop]: 1332 mSDtfsCounter, 90 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:27,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2417 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 507 Invalid, 0 Unknown, 61 Unchecked, 0.5s Time] [2021-11-23 16:50:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3269045323047253) internal successors, (1376), 1065 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1376 transitions. [2021-11-23 16:50:27,074 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1376 transitions. Word has length 115 [2021-11-23 16:50:27,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:27,074 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1376 transitions. [2021-11-23 16:50:27,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1376 transitions. [2021-11-23 16:50:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:27,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:27,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:27,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (111)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:27,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:27,290 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:27,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:27,290 INFO L85 PathProgramCache]: Analyzing trace with hash 426136816, now seen corresponding path program 1 times [2021-11-23 16:50:27,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:27,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511727055] [2021-11-23 16:50:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:27,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:27,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:27,292 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:27,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2021-11-23 16:50:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:27,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:27,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:29,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:29,121 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:29,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511727055] [2021-11-23 16:50:29,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511727055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:29,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:29,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:29,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242263581] [2021-11-23 16:50:29,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:29,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:29,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:29,123 INFO L87 Difference]: Start difference. First operand 1066 states and 1376 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:29,714 INFO L93 Difference]: Finished difference Result 1155 states and 1513 transitions. [2021-11-23 16:50:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:29,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:29,715 INFO L225 Difference]: With dead ends: 1155 [2021-11-23 16:50:29,715 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:29,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:29,716 INFO L933 BasicCegarLoop]: 1331 mSDtfsCounter, 89 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:29,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 2416 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 506 Invalid, 0 Unknown, 61 Unchecked, 0.5s Time] [2021-11-23 16:50:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:29,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.325940212150434) internal successors, (1375), 1065 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1375 transitions. [2021-11-23 16:50:29,735 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1375 transitions. Word has length 115 [2021-11-23 16:50:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:29,736 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1375 transitions. [2021-11-23 16:50:29,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1375 transitions. [2021-11-23 16:50:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:29,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:29,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:29,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:29,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:29,938 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:29,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:29,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1044376721, now seen corresponding path program 1 times [2021-11-23 16:50:29,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:29,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495551260] [2021-11-23 16:50:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:29,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:29,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:29,941 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:29,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2021-11-23 16:50:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:30,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:30,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:31,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:31,683 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:31,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495551260] [2021-11-23 16:50:31,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495551260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:31,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:31,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:31,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061057483] [2021-11-23 16:50:31,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:31,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:31,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:31,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:31,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:31,685 INFO L87 Difference]: Start difference. First operand 1066 states and 1375 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:32,247 INFO L93 Difference]: Finished difference Result 1152 states and 1509 transitions. [2021-11-23 16:50:32,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:32,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:32,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:32,249 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:50:32,249 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:32,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:32,250 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 90 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:32,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2415 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 505 Invalid, 0 Unknown, 61 Unchecked, 0.5s Time] [2021-11-23 16:50:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:32,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:32,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3249758919961427) internal successors, (1374), 1065 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1374 transitions. [2021-11-23 16:50:32,269 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1374 transitions. Word has length 115 [2021-11-23 16:50:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:32,269 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1374 transitions. [2021-11-23 16:50:32,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1374 transitions. [2021-11-23 16:50:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:32,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:32,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:32,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (113)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:32,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:32,487 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1985012495, now seen corresponding path program 1 times [2021-11-23 16:50:32,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:32,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180839228] [2021-11-23 16:50:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:32,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:32,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:32,489 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:32,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2021-11-23 16:50:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:32,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:32,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:34,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:34,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:34,343 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:34,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180839228] [2021-11-23 16:50:34,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180839228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:34,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:34,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:34,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886278814] [2021-11-23 16:50:34,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:34,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:34,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:34,344 INFO L87 Difference]: Start difference. First operand 1066 states and 1374 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:35,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:35,308 INFO L93 Difference]: Finished difference Result 1155 states and 1511 transitions. [2021-11-23 16:50:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:35,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:35,309 INFO L225 Difference]: With dead ends: 1155 [2021-11-23 16:50:35,310 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:35,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:35,310 INFO L933 BasicCegarLoop]: 1329 mSDtfsCounter, 79 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 1671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 566 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:35,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 3793 Invalid, 1671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1104 Invalid, 0 Unknown, 566 Unchecked, 0.9s Time] [2021-11-23 16:50:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3240115718418515) internal successors, (1373), 1065 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1373 transitions. [2021-11-23 16:50:35,330 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1373 transitions. Word has length 115 [2021-11-23 16:50:35,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:35,330 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1373 transitions. [2021-11-23 16:50:35,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1373 transitions. [2021-11-23 16:50:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 16:50:35,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:35,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:35,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (114)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:35,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:35,532 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:35,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash -395682645, now seen corresponding path program 1 times [2021-11-23 16:50:35,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:35,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137500642] [2021-11-23 16:50:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:35,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:35,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:35,534 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:35,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2021-11-23 16:50:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:35,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:35,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:37,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:37,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:37,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137500642] [2021-11-23 16:50:37,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137500642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:37,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:37,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:37,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134664982] [2021-11-23 16:50:37,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:37,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:37,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:37,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:37,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:37,410 INFO L87 Difference]: Start difference. First operand 1066 states and 1373 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:38,144 INFO L93 Difference]: Finished difference Result 1152 states and 1507 transitions. [2021-11-23 16:50:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:38,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-23 16:50:38,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:38,145 INFO L225 Difference]: With dead ends: 1152 [2021-11-23 16:50:38,145 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:38,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:38,146 INFO L933 BasicCegarLoop]: 1328 mSDtfsCounter, 65 mSDsluCounter, 4645 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5973 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2103 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:38,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5973 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 601 Invalid, 0 Unknown, 2103 Unchecked, 0.7s Time] [2021-11-23 16:50:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.3230472516875602) internal successors, (1372), 1065 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1372 transitions. [2021-11-23 16:50:38,166 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1372 transitions. Word has length 115 [2021-11-23 16:50:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:38,167 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1372 transitions. [2021-11-23 16:50:38,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1372 transitions. [2021-11-23 16:50:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:50:38,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:38,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:38,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (115)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:38,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:38,369 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:38,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:38,370 INFO L85 PathProgramCache]: Analyzing trace with hash 845319688, now seen corresponding path program 1 times [2021-11-23 16:50:38,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:38,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932673215] [2021-11-23 16:50:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:38,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:38,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:38,374 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:38,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (116)] Waiting until timeout for monitored process [2021-11-23 16:50:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:38,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:38,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:40,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:40,080 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:40,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932673215] [2021-11-23 16:50:40,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932673215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:40,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:40,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:40,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96401184] [2021-11-23 16:50:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:40,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:40,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:40,082 INFO L87 Difference]: Start difference. First operand 1066 states and 1372 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:40,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:40,658 INFO L93 Difference]: Finished difference Result 1151 states and 1505 transitions. [2021-11-23 16:50:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:40,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:50:40,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:40,659 INFO L225 Difference]: With dead ends: 1151 [2021-11-23 16:50:40,660 INFO L226 Difference]: Without dead ends: 1066 [2021-11-23 16:50:40,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:40,660 INFO L933 BasicCegarLoop]: 1327 mSDtfsCounter, 92 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 565 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:40,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 3148 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 502 Invalid, 0 Unknown, 565 Unchecked, 0.5s Time] [2021-11-23 16:50:40,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-23 16:50:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1066. [2021-11-23 16:50:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 1037 states have (on average 1.322082931533269) internal successors, (1371), 1065 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1371 transitions. [2021-11-23 16:50:40,680 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1371 transitions. Word has length 116 [2021-11-23 16:50:40,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:40,680 INFO L470 AbstractCegarLoop]: Abstraction has 1066 states and 1371 transitions. [2021-11-23 16:50:40,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:40,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1371 transitions. [2021-11-23 16:50:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:50:40,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:40,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:40,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (116)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:40,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:40,882 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:40,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash 871035336, now seen corresponding path program 1 times [2021-11-23 16:50:40,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:40,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141297188] [2021-11-23 16:50:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:40,883 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:40,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:40,884 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:40,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (117)] Waiting until timeout for monitored process [2021-11-23 16:50:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:41,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:41,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:42,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:42,574 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:42,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141297188] [2021-11-23 16:50:42,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141297188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:42,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:42,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:42,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679362323] [2021-11-23 16:50:42,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:42,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:42,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:42,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:42,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:42,575 INFO L87 Difference]: Start difference. First operand 1066 states and 1371 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:43,560 INFO L93 Difference]: Finished difference Result 1154 states and 1510 transitions. [2021-11-23 16:50:43,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:43,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:50:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:43,561 INFO L225 Difference]: With dead ends: 1154 [2021-11-23 16:50:43,562 INFO L226 Difference]: Without dead ends: 1070 [2021-11-23 16:50:43,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:43,562 INFO L933 BasicCegarLoop]: 1325 mSDtfsCounter, 60 mSDsluCounter, 3904 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 5229 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1594 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:43,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 5229 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1095 Invalid, 0 Unknown, 1594 Unchecked, 0.9s Time] [2021-11-23 16:50:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-11-23 16:50:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1069. [2021-11-23 16:50:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.3221153846153846) internal successors, (1375), 1068 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1375 transitions. [2021-11-23 16:50:43,595 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1375 transitions. Word has length 116 [2021-11-23 16:50:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:43,595 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1375 transitions. [2021-11-23 16:50:43,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1375 transitions. [2021-11-23 16:50:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:50:43,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:43,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:43,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (117)] Ended with exit code 0 [2021-11-23 16:50:43,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:43,814 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:43,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash 345355967, now seen corresponding path program 1 times [2021-11-23 16:50:43,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:43,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608684994] [2021-11-23 16:50:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:43,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:43,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:43,816 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:43,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2021-11-23 16:50:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:44,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:44,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:45,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:45,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:45,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608684994] [2021-11-23 16:50:45,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608684994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:45,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:45,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:45,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884190757] [2021-11-23 16:50:45,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:45,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:45,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:45,686 INFO L87 Difference]: Start difference. First operand 1069 states and 1375 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:46,675 INFO L93 Difference]: Finished difference Result 1154 states and 1508 transitions. [2021-11-23 16:50:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:46,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:50:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:46,676 INFO L225 Difference]: With dead ends: 1154 [2021-11-23 16:50:46,677 INFO L226 Difference]: Without dead ends: 1069 [2021-11-23 16:50:46,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:46,677 INFO L933 BasicCegarLoop]: 1326 mSDtfsCounter, 66 mSDsluCounter, 4647 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 5973 SdHoareTripleChecker+Invalid, 3194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2096 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:46,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 5973 Invalid, 3194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1097 Invalid, 0 Unknown, 2096 Unchecked, 0.9s Time] [2021-11-23 16:50:46,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-23 16:50:46,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-23 16:50:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.3211538461538461) internal successors, (1374), 1068 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:46,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1374 transitions. [2021-11-23 16:50:46,700 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1374 transitions. Word has length 116 [2021-11-23 16:50:46,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:46,700 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1374 transitions. [2021-11-23 16:50:46,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:46,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1374 transitions. [2021-11-23 16:50:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:50:46,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:46,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:46,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:46,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:46,902 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:46,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:46,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1757179426, now seen corresponding path program 1 times [2021-11-23 16:50:46,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:46,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71516641] [2021-11-23 16:50:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:46,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:46,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:46,904 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:46,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (119)] Waiting until timeout for monitored process [2021-11-23 16:50:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:47,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:47,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:48,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:48,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:48,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71516641] [2021-11-23 16:50:48,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71516641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:48,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:48,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:48,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513766776] [2021-11-23 16:50:48,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:48,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:48,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:48,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:48,695 INFO L87 Difference]: Start difference. First operand 1069 states and 1374 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:49,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:49,692 INFO L93 Difference]: Finished difference Result 1154 states and 1507 transitions. [2021-11-23 16:50:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:49,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:50:49,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:49,694 INFO L225 Difference]: With dead ends: 1154 [2021-11-23 16:50:49,694 INFO L226 Difference]: Without dead ends: 1069 [2021-11-23 16:50:49,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:49,696 INFO L933 BasicCegarLoop]: 1325 mSDtfsCounter, 82 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 4498 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1091 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:49,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 4498 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1096 Invalid, 0 Unknown, 1091 Unchecked, 0.9s Time] [2021-11-23 16:50:49,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-23 16:50:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-23 16:50:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.3201923076923077) internal successors, (1373), 1068 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:49,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1373 transitions. [2021-11-23 16:50:49,751 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1373 transitions. Word has length 116 [2021-11-23 16:50:49,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:49,751 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1373 transitions. [2021-11-23 16:50:49,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1373 transitions. [2021-11-23 16:50:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:50:49,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:49,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:49,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (119)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:49,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:49,953 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:49,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:49,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1164272560, now seen corresponding path program 1 times [2021-11-23 16:50:49,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:49,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737124641] [2021-11-23 16:50:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:49,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:49,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:49,956 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:49,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (120)] Waiting until timeout for monitored process [2021-11-23 16:50:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:50,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:50,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:51,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:51,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:51,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737124641] [2021-11-23 16:50:51,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737124641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:51,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:51,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:51,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449169438] [2021-11-23 16:50:51,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:51,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:51,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:51,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:51,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:51,694 INFO L87 Difference]: Start difference. First operand 1069 states and 1373 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:52,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:52,439 INFO L93 Difference]: Finished difference Result 1154 states and 1506 transitions. [2021-11-23 16:50:52,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:52,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:50:52,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:52,441 INFO L225 Difference]: With dead ends: 1154 [2021-11-23 16:50:52,441 INFO L226 Difference]: Without dead ends: 1069 [2021-11-23 16:50:52,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:52,442 INFO L933 BasicCegarLoop]: 1324 mSDtfsCounter, 65 mSDsluCounter, 3913 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 5237 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1586 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:52,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 5237 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 597 Invalid, 0 Unknown, 1586 Unchecked, 0.7s Time] [2021-11-23 16:50:52,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-23 16:50:52,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-23 16:50:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.3192307692307692) internal successors, (1372), 1068 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1372 transitions. [2021-11-23 16:50:52,474 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1372 transitions. Word has length 116 [2021-11-23 16:50:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:52,474 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1372 transitions. [2021-11-23 16:50:52,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:52,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1372 transitions. [2021-11-23 16:50:52,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:50:52,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:52,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:52,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (120)] Ended with exit code 0 [2021-11-23 16:50:52,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:52,697 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:52,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1983728155, now seen corresponding path program 1 times [2021-11-23 16:50:52,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:52,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010108041] [2021-11-23 16:50:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:52,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:52,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:52,699 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:52,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2021-11-23 16:50:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:53,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:53,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:54,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:54,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:54,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010108041] [2021-11-23 16:50:54,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010108041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:54,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:54,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:54,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007658346] [2021-11-23 16:50:54,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:54,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:54,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:54,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:54,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:54,505 INFO L87 Difference]: Start difference. First operand 1069 states and 1372 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:55,416 INFO L93 Difference]: Finished difference Result 1153 states and 1504 transitions. [2021-11-23 16:50:55,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:55,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:50:55,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:55,417 INFO L225 Difference]: With dead ends: 1153 [2021-11-23 16:50:55,418 INFO L226 Difference]: Without dead ends: 1069 [2021-11-23 16:50:55,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:55,418 INFO L933 BasicCegarLoop]: 1323 mSDtfsCounter, 81 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:55,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 3050 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1092 Invalid, 0 Unknown, 61 Unchecked, 0.9s Time] [2021-11-23 16:50:55,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-23 16:50:55,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-23 16:50:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.3182692307692307) internal successors, (1371), 1068 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1371 transitions. [2021-11-23 16:50:55,437 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1371 transitions. Word has length 116 [2021-11-23 16:50:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:55,437 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1371 transitions. [2021-11-23 16:50:55,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1371 transitions. [2021-11-23 16:50:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:50:55,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:55,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:55,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (121)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:55,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:55,654 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1933301908, now seen corresponding path program 1 times [2021-11-23 16:50:55,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:55,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620803342] [2021-11-23 16:50:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:55,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:55,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:55,656 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:55,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (122)] Waiting until timeout for monitored process [2021-11-23 16:50:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:56,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:56,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:50:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:50:57,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:50:57,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:50:57,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620803342] [2021-11-23 16:50:57,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620803342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:50:57,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:50:57,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:50:57,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739019648] [2021-11-23 16:50:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:50:57,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:50:57,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:50:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:50:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:50:57,596 INFO L87 Difference]: Start difference. First operand 1069 states and 1371 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:58,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:50:58,175 INFO L93 Difference]: Finished difference Result 1153 states and 1503 transitions. [2021-11-23 16:50:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:50:58,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:50:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:50:58,176 INFO L225 Difference]: With dead ends: 1153 [2021-11-23 16:50:58,177 INFO L226 Difference]: Without dead ends: 1069 [2021-11-23 16:50:58,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:50:58,177 INFO L933 BasicCegarLoop]: 1322 mSDtfsCounter, 91 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:50:58,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2407 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 497 Invalid, 0 Unknown, 61 Unchecked, 0.5s Time] [2021-11-23 16:50:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-23 16:50:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-23 16:50:58,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.3173076923076923) internal successors, (1370), 1068 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1370 transitions. [2021-11-23 16:50:58,197 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1370 transitions. Word has length 116 [2021-11-23 16:50:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:50:58,197 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1370 transitions. [2021-11-23 16:50:58,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:50:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1370 transitions. [2021-11-23 16:50:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:50:58,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:50:58,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:50:58,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (122)] Forceful destruction successful, exit code 0 [2021-11-23 16:50:58,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:50:58,400 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:50:58,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:50:58,400 INFO L85 PathProgramCache]: Analyzing trace with hash 698494103, now seen corresponding path program 1 times [2021-11-23 16:50:58,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:50:58,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065098088] [2021-11-23 16:50:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:50:58,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:50:58,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:50:58,402 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:50:58,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (123)] Waiting until timeout for monitored process [2021-11-23 16:50:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:50:58,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:50:58,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:51:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:51:00,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:51:00,122 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:51:00,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065098088] [2021-11-23 16:51:00,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065098088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:51:00,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:51:00,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:51:00,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80112021] [2021-11-23 16:51:00,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:51:00,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:51:00,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:51:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:51:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:51:00,124 INFO L87 Difference]: Start difference. First operand 1069 states and 1370 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:51:00,716 INFO L93 Difference]: Finished difference Result 1154 states and 1503 transitions. [2021-11-23 16:51:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:51:00,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:51:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:51:00,718 INFO L225 Difference]: With dead ends: 1154 [2021-11-23 16:51:00,718 INFO L226 Difference]: Without dead ends: 1069 [2021-11-23 16:51:00,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:51:00,719 INFO L933 BasicCegarLoop]: 1321 mSDtfsCounter, 92 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 559 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:51:00,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 3142 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 0 Unknown, 559 Unchecked, 0.5s Time] [2021-11-23 16:51:00,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-23 16:51:00,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-23 16:51:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.3163461538461538) internal successors, (1369), 1068 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1369 transitions. [2021-11-23 16:51:00,740 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1369 transitions. Word has length 116 [2021-11-23 16:51:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:51:00,740 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1369 transitions. [2021-11-23 16:51:00,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:00,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1369 transitions. [2021-11-23 16:51:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:51:00,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:51:00,742 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:51:00,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (123)] Forceful destruction successful, exit code 0 [2021-11-23 16:51:00,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:51:00,942 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:51:00,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:51:00,943 INFO L85 PathProgramCache]: Analyzing trace with hash -453762918, now seen corresponding path program 1 times [2021-11-23 16:51:00,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:51:00,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597746470] [2021-11-23 16:51:00,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:51:00,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:51:00,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:51:00,944 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:51:00,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2021-11-23 16:51:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:51:01,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:51:01,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:51:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:51:02,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:51:02,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:51:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597746470] [2021-11-23 16:51:02,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597746470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:51:02,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:51:02,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:51:02,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581749386] [2021-11-23 16:51:02,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:51:02,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:51:02,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:51:02,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:51:02,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:51:02,705 INFO L87 Difference]: Start difference. First operand 1069 states and 1369 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:51:03,686 INFO L93 Difference]: Finished difference Result 1153 states and 1501 transitions. [2021-11-23 16:51:03,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:51:03,686 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:51:03,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:51:03,688 INFO L225 Difference]: With dead ends: 1153 [2021-11-23 16:51:03,688 INFO L226 Difference]: Without dead ends: 1069 [2021-11-23 16:51:03,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:51:03,688 INFO L933 BasicCegarLoop]: 1320 mSDtfsCounter, 81 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 558 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 16:51:03,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 3783 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1086 Invalid, 0 Unknown, 558 Unchecked, 0.9s Time] [2021-11-23 16:51:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-23 16:51:03,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-23 16:51:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.3153846153846154) internal successors, (1368), 1068 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1368 transitions. [2021-11-23 16:51:03,710 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1368 transitions. Word has length 116 [2021-11-23 16:51:03,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:51:03,710 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1368 transitions. [2021-11-23 16:51:03,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:03,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1368 transitions. [2021-11-23 16:51:03,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:51:03,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:51:03,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:51:03,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (124)] Forceful destruction successful, exit code 0 [2021-11-23 16:51:03,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:51:03,940 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:51:03,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:51:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1842448692, now seen corresponding path program 1 times [2021-11-23 16:51:03,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:51:03,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14539612] [2021-11-23 16:51:03,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:51:03,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:51:03,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:51:03,944 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:51:03,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (125)] Waiting until timeout for monitored process [2021-11-23 16:51:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:51:04,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:51:04,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:51:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:51:05,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:51:05,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:51:05,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14539612] [2021-11-23 16:51:05,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14539612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:51:05,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:51:05,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:51:05,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940701027] [2021-11-23 16:51:05,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:51:05,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:51:05,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:51:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:51:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:51:05,888 INFO L87 Difference]: Start difference. First operand 1069 states and 1368 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:06,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:51:06,488 INFO L93 Difference]: Finished difference Result 1153 states and 1500 transitions. [2021-11-23 16:51:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:51:06,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:51:06,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:51:06,490 INFO L225 Difference]: With dead ends: 1153 [2021-11-23 16:51:06,490 INFO L226 Difference]: Without dead ends: 1069 [2021-11-23 16:51:06,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:51:06,494 INFO L933 BasicCegarLoop]: 1319 mSDtfsCounter, 91 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:51:06,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 2404 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 494 Invalid, 0 Unknown, 61 Unchecked, 0.5s Time] [2021-11-23 16:51:06,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-23 16:51:06,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-23 16:51:06,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.314423076923077) internal successors, (1367), 1068 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1367 transitions. [2021-11-23 16:51:06,516 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1367 transitions. Word has length 116 [2021-11-23 16:51:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:51:06,517 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1367 transitions. [2021-11-23 16:51:06,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1367 transitions. [2021-11-23 16:51:06,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:51:06,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:51:06,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:51:06,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (125)] Forceful destruction successful, exit code 0 [2021-11-23 16:51:06,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:51:06,736 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:51:06,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:51:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash -956364354, now seen corresponding path program 1 times [2021-11-23 16:51:06,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:51:06,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267823920] [2021-11-23 16:51:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:51:06,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:51:06,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:51:06,739 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:51:06,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (126)] Waiting until timeout for monitored process [2021-11-23 16:51:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:51:07,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:51:07,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:51:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:51:08,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:51:08,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:51:08,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267823920] [2021-11-23 16:51:08,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267823920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:51:08,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:51:08,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:51:08,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179608222] [2021-11-23 16:51:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:51:08,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:51:08,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:51:08,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:51:08,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:51:08,563 INFO L87 Difference]: Start difference. First operand 1069 states and 1367 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:51:09,154 INFO L93 Difference]: Finished difference Result 1154 states and 1500 transitions. [2021-11-23 16:51:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:51:09,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:51:09,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:51:09,155 INFO L225 Difference]: With dead ends: 1154 [2021-11-23 16:51:09,156 INFO L226 Difference]: Without dead ends: 1069 [2021-11-23 16:51:09,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:51:09,156 INFO L933 BasicCegarLoop]: 1318 mSDtfsCounter, 92 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3877 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1049 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 16:51:09,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 3877 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 493 Invalid, 0 Unknown, 1049 Unchecked, 0.5s Time] [2021-11-23 16:51:09,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-23 16:51:09,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-23 16:51:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.3134615384615385) internal successors, (1366), 1068 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1366 transitions. [2021-11-23 16:51:09,193 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1366 transitions. Word has length 116 [2021-11-23 16:51:09,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:51:09,194 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1366 transitions. [2021-11-23 16:51:09,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1366 transitions. [2021-11-23 16:51:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-23 16:51:09,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:51:09,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:51:09,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (126)] Forceful destruction successful, exit code 0 [2021-11-23 16:51:09,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:51:09,396 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:51:09,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:51:09,396 INFO L85 PathProgramCache]: Analyzing trace with hash -581183163, now seen corresponding path program 1 times [2021-11-23 16:51:09,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:51:09,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713530744] [2021-11-23 16:51:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:51:09,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:51:09,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:51:09,398 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:51:09,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2021-11-23 16:51:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:51:09,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:51:09,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:51:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:51:11,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:51:11,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:51:11,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713530744] [2021-11-23 16:51:11,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713530744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:51:11,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:51:11,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:51:11,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71264067] [2021-11-23 16:51:11,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:51:11,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:51:11,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:51:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:51:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:51:11,228 INFO L87 Difference]: Start difference. First operand 1069 states and 1366 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:51:11,274 INFO L93 Difference]: Finished difference Result 1153 states and 1498 transitions. [2021-11-23 16:51:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:51:11,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-23 16:51:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:51:11,276 INFO L225 Difference]: With dead ends: 1153 [2021-11-23 16:51:11,276 INFO L226 Difference]: Without dead ends: 1069 [2021-11-23 16:51:11,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:51:11,277 INFO L933 BasicCegarLoop]: 1318 mSDtfsCounter, 65 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 549 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:51:11,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 3155 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 549 Unchecked, 0.0s Time] [2021-11-23 16:51:11,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-23 16:51:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2021-11-23 16:51:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1040 states have (on average 1.3125) internal successors, (1365), 1068 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1365 transitions. [2021-11-23 16:51:11,298 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1365 transitions. Word has length 116 [2021-11-23 16:51:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:51:11,299 INFO L470 AbstractCegarLoop]: Abstraction has 1069 states and 1365 transitions. [2021-11-23 16:51:11,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1365 transitions. [2021-11-23 16:51:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 16:51:11,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:51:11,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:51:11,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (127)] Forceful destruction successful, exit code 0 [2021-11-23 16:51:11,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:51:11,501 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:51:11,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:51:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash 159674476, now seen corresponding path program 1 times [2021-11-23 16:51:11,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:51:11,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502605633] [2021-11-23 16:51:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:51:11,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:51:11,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:51:11,507 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:51:11,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (128)] Waiting until timeout for monitored process [2021-11-23 16:51:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:51:11,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 16:51:11,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:51:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:51:14,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:51:14,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:51:14,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502605633] [2021-11-23 16:51:14,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502605633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:51:14,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:51:14,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 16:51:14,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356971775] [2021-11-23 16:51:14,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:51:14,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 16:51:14,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:51:14,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 16:51:14,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-23 16:51:14,296 INFO L87 Difference]: Start difference. First operand 1069 states and 1365 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:14,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:51:14,429 INFO L93 Difference]: Finished difference Result 1153 states and 1497 transitions. [2021-11-23 16:51:14,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 16:51:14,430 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-23 16:51:14,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:51:14,430 INFO L225 Difference]: With dead ends: 1153 [2021-11-23 16:51:14,431 INFO L226 Difference]: Without dead ends: 664 [2021-11-23 16:51:14,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-23 16:51:14,431 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 134 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:51:14,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 2531 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 88 Unchecked, 0.1s Time] [2021-11-23 16:51:14,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-23 16:51:14,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2021-11-23 16:51:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 642 states have (on average 1.3006230529595015) internal successors, (835), 663 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 835 transitions. [2021-11-23 16:51:14,444 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 835 transitions. Word has length 117 [2021-11-23 16:51:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:51:14,444 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 835 transitions. [2021-11-23 16:51:14,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 835 transitions. [2021-11-23 16:51:14,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 16:51:14,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:51:14,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:51:14,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (128)] Ended with exit code 0 [2021-11-23 16:51:14,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:51:14,662 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:51:14,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:51:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1596743316, now seen corresponding path program 1 times [2021-11-23 16:51:14,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:51:14,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090726993] [2021-11-23 16:51:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:51:14,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:51:14,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:51:14,675 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:51:14,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (129)] Waiting until timeout for monitored process [2021-11-23 16:51:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:51:15,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:51:15,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:51:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:51:17,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:51:17,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:51:17,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090726993] [2021-11-23 16:51:17,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090726993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:51:17,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:51:17,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 16:51:17,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985591854] [2021-11-23 16:51:17,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:51:17,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:51:17,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:51:17,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:51:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:51:17,055 INFO L87 Difference]: Start difference. First operand 664 states and 835 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:51:17,118 INFO L93 Difference]: Finished difference Result 748 states and 967 transitions. [2021-11-23 16:51:17,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 16:51:17,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-23 16:51:17,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:51:17,120 INFO L225 Difference]: With dead ends: 748 [2021-11-23 16:51:17,120 INFO L226 Difference]: Without dead ends: 447 [2021-11-23 16:51:17,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:51:17,121 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 55 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:51:17,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 3077 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 129 Unchecked, 0.0s Time] [2021-11-23 16:51:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-23 16:51:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-11-23 16:51:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 431 states have (on average 1.2993039443155452) internal successors, (560), 446 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 560 transitions. [2021-11-23 16:51:17,132 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 560 transitions. Word has length 117 [2021-11-23 16:51:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:51:17,132 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 560 transitions. [2021-11-23 16:51:17,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 560 transitions. [2021-11-23 16:51:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 16:51:17,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:51:17,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:51:17,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (129)] Forceful destruction successful, exit code 0 [2021-11-23 16:51:17,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:51:17,338 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:51:17,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:51:17,338 INFO L85 PathProgramCache]: Analyzing trace with hash 186174220, now seen corresponding path program 1 times [2021-11-23 16:51:17,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:51:17,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268917855] [2021-11-23 16:51:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:51:17,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:51:17,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:51:17,340 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:51:17,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2021-11-23 16:51:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:51:17,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-23 16:51:17,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:51:40,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:51:40,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:51:40,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:51:40,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268917855] [2021-11-23 16:51:40,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268917855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:51:40,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:51:40,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-23 16:51:40,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710725176] [2021-11-23 16:51:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:51:40,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-23 16:51:40,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:51:40,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-23 16:51:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 16:51:40,992 INFO L87 Difference]: Start difference. First operand 447 states and 560 transitions. Second operand has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:51:41,414 INFO L93 Difference]: Finished difference Result 585 states and 757 transitions. [2021-11-23 16:51:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 16:51:41,414 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-23 16:51:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:51:41,415 INFO L225 Difference]: With dead ends: 585 [2021-11-23 16:51:41,415 INFO L226 Difference]: Without dead ends: 468 [2021-11-23 16:51:41,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=272, Invalid=1134, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 16:51:41,416 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 184 mSDsluCounter, 5162 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 5659 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2844 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 16:51:41,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 5659 Invalid, 3015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 167 Invalid, 0 Unknown, 2844 Unchecked, 0.3s Time] [2021-11-23 16:51:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-23 16:51:41,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2021-11-23 16:51:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 452 states have (on average 1.2942477876106195) internal successors, (585), 467 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 585 transitions. [2021-11-23 16:51:41,428 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 585 transitions. Word has length 117 [2021-11-23 16:51:41,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:51:41,428 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 585 transitions. [2021-11-23 16:51:41,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:51:41,429 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 585 transitions. [2021-11-23 16:51:41,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 16:51:41,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:51:41,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:51:41,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (130)] Ended with exit code 0 [2021-11-23 16:51:41,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:51:41,630 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:51:41,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:51:41,630 INFO L85 PathProgramCache]: Analyzing trace with hash 244543956, now seen corresponding path program 1 times [2021-11-23 16:51:41,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:51:41,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203184808] [2021-11-23 16:51:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:51:41,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:51:41,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:51:41,633 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:51:41,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (131)] Waiting until timeout for monitored process [2021-11-23 16:51:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:51:42,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-23 16:51:42,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:52:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:52:19,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:52:19,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:52:19,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203184808] [2021-11-23 16:52:19,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203184808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:52:19,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:52:19,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-23 16:52:19,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39061595] [2021-11-23 16:52:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:52:19,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-23 16:52:19,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:52:19,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-23 16:52:19,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1117, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 16:52:19,590 INFO L87 Difference]: Start difference. First operand 468 states and 585 transitions. Second operand has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:52:19,983 INFO L93 Difference]: Finished difference Result 574 states and 744 transitions. [2021-11-23 16:52:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 16:52:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-23 16:52:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:52:19,985 INFO L225 Difference]: With dead ends: 574 [2021-11-23 16:52:19,985 INFO L226 Difference]: Without dead ends: 474 [2021-11-23 16:52:19,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=235, Invalid=1171, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 16:52:19,986 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 150 mSDsluCounter, 6694 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 7186 SdHoareTripleChecker+Invalid, 4069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3927 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 16:52:19,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 7186 Invalid, 4069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 3927 Unchecked, 0.2s Time] [2021-11-23 16:52:19,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-23 16:52:19,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2021-11-23 16:52:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 458 states have (on average 1.294759825327511) internal successors, (593), 473 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:20,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 593 transitions. [2021-11-23 16:52:20,000 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 593 transitions. Word has length 117 [2021-11-23 16:52:20,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:52:20,000 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 593 transitions. [2021-11-23 16:52:20,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.1621621621621623) internal successors, (117), 37 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:20,000 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 593 transitions. [2021-11-23 16:52:20,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 16:52:20,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:52:20,001 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:52:20,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (131)] Forceful destruction successful, exit code 0 [2021-11-23 16:52:20,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:52:20,202 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:52:20,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:52:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1596485657, now seen corresponding path program 1 times [2021-11-23 16:52:20,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:52:20,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525010047] [2021-11-23 16:52:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:52:20,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:52:20,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:52:20,204 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:52:20,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (132)] Waiting until timeout for monitored process [2021-11-23 16:52:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:52:20,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-23 16:52:20,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:52:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:52:34,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:52:34,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:52:34,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525010047] [2021-11-23 16:52:34,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525010047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:52:34,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:52:34,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-23 16:52:34,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270229541] [2021-11-23 16:52:34,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:52:34,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 16:52:34,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:52:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 16:52:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2021-11-23 16:52:34,659 INFO L87 Difference]: Start difference. First operand 474 states and 593 transitions. Second operand has 32 states, 32 states have (on average 3.65625) internal successors, (117), 32 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:52:34,953 INFO L93 Difference]: Finished difference Result 622 states and 804 transitions. [2021-11-23 16:52:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 16:52:34,953 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.65625) internal successors, (117), 32 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-23 16:52:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:52:34,954 INFO L225 Difference]: With dead ends: 622 [2021-11-23 16:52:34,954 INFO L226 Difference]: Without dead ends: 475 [2021-11-23 16:52:34,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 16:52:34,955 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 252 mSDsluCounter, 4896 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 5397 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3046 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 16:52:34,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 5397 Invalid, 3144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 3046 Unchecked, 0.2s Time] [2021-11-23 16:52:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-11-23 16:52:34,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2021-11-23 16:52:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 459 states have (on average 1.2941176470588236) internal successors, (594), 474 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 594 transitions. [2021-11-23 16:52:34,970 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 594 transitions. Word has length 117 [2021-11-23 16:52:34,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:52:34,970 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 594 transitions. [2021-11-23 16:52:34,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.65625) internal successors, (117), 32 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:34,970 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 594 transitions. [2021-11-23 16:52:34,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 16:52:34,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:52:34,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:52:34,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (132)] Forceful destruction successful, exit code 0 [2021-11-23 16:52:35,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:52:35,172 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:52:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:52:35,172 INFO L85 PathProgramCache]: Analyzing trace with hash -526119604, now seen corresponding path program 1 times [2021-11-23 16:52:35,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:52:35,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962375328] [2021-11-23 16:52:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:52:35,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:52:35,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:52:35,173 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:52:35,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2021-11-23 16:52:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:52:35,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:52:35,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:52:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:52:37,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:52:37,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:52:37,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962375328] [2021-11-23 16:52:37,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962375328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:52:37,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:52:37,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 16:52:37,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154117414] [2021-11-23 16:52:37,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:52:37,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:52:37,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:52:37,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:52:37,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:52:37,262 INFO L87 Difference]: Start difference. First operand 475 states and 594 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:52:37,336 INFO L93 Difference]: Finished difference Result 559 states and 726 transitions. [2021-11-23 16:52:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 16:52:37,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-23 16:52:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:52:37,337 INFO L225 Difference]: With dead ends: 559 [2021-11-23 16:52:37,337 INFO L226 Difference]: Without dead ends: 358 [2021-11-23 16:52:37,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:52:37,338 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 60 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:52:37,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 2207 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 111 Unchecked, 0.0s Time] [2021-11-23 16:52:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-23 16:52:37,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-11-23 16:52:37,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 347 states have (on average 1.2853025936599423) internal successors, (446), 357 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 446 transitions. [2021-11-23 16:52:37,349 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 446 transitions. Word has length 117 [2021-11-23 16:52:37,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:52:37,349 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 446 transitions. [2021-11-23 16:52:37,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:37,349 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 446 transitions. [2021-11-23 16:52:37,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 16:52:37,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:52:37,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:52:37,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (133)] Forceful destruction successful, exit code 0 [2021-11-23 16:52:37,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:52:37,550 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:52:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:52:37,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1796119223, now seen corresponding path program 1 times [2021-11-23 16:52:37,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:52:37,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343131610] [2021-11-23 16:52:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:52:37,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:52:37,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:52:37,552 INFO L229 MonitoredProcess]: Starting monitored process 134 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:52:37,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (134)] Waiting until timeout for monitored process [2021-11-23 16:52:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:52:37,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:52:37,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:52:39,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:52:39,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:52:39,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:52:39,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343131610] [2021-11-23 16:52:39,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343131610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:52:39,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:52:39,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 16:52:39,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708193229] [2021-11-23 16:52:39,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:52:39,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:52:39,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:52:39,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:52:39,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:52:39,596 INFO L87 Difference]: Start difference. First operand 358 states and 446 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:39,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:52:39,667 INFO L93 Difference]: Finished difference Result 442 states and 578 transitions. [2021-11-23 16:52:39,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 16:52:39,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-23 16:52:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:52:39,668 INFO L225 Difference]: With dead ends: 442 [2021-11-23 16:52:39,668 INFO L226 Difference]: Without dead ends: 325 [2021-11-23 16:52:39,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:52:39,669 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 66 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:52:39,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 1937 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 133 Unchecked, 0.0s Time] [2021-11-23 16:52:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-23 16:52:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 324. [2021-11-23 16:52:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 316 states have (on average 1.2816455696202531) internal successors, (405), 323 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 405 transitions. [2021-11-23 16:52:39,680 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 405 transitions. Word has length 118 [2021-11-23 16:52:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:52:39,680 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 405 transitions. [2021-11-23 16:52:39,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 405 transitions. [2021-11-23 16:52:39,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 16:52:39,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:52:39,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:52:39,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (134)] Forceful destruction successful, exit code 0 [2021-11-23 16:52:39,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:52:39,881 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:52:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:52:39,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1737749487, now seen corresponding path program 1 times [2021-11-23 16:52:39,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:52:39,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407810008] [2021-11-23 16:52:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:52:39,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:52:39,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:52:39,883 INFO L229 MonitoredProcess]: Starting monitored process 135 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:52:39,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (135)] Waiting until timeout for monitored process [2021-11-23 16:52:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:52:40,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 16:52:40,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:52:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:52:43,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:52:43,616 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:52:43,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407810008] [2021-11-23 16:52:43,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407810008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:52:43,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:52:43,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 16:52:43,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205426256] [2021-11-23 16:52:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:52:43,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 16:52:43,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:52:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 16:52:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-23 16:52:43,617 INFO L87 Difference]: Start difference. First operand 324 states and 405 transitions. Second operand has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:52:43,791 INFO L93 Difference]: Finished difference Result 408 states and 537 transitions. [2021-11-23 16:52:43,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 16:52:43,792 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-23 16:52:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:52:43,792 INFO L225 Difference]: With dead ends: 408 [2021-11-23 16:52:43,792 INFO L226 Difference]: Without dead ends: 308 [2021-11-23 16:52:43,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-23 16:52:43,793 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 111 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:52:43,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 2160 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 379 Unchecked, 0.1s Time] [2021-11-23 16:52:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-23 16:52:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 297. [2021-11-23 16:52:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 291 states have (on average 1.2783505154639174) internal successors, (372), 296 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 372 transitions. [2021-11-23 16:52:43,804 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 372 transitions. Word has length 118 [2021-11-23 16:52:43,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:52:43,805 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 372 transitions. [2021-11-23 16:52:43,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:43,805 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 372 transitions. [2021-11-23 16:52:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 16:52:43,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:52:43,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:52:43,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (135)] Forceful destruction successful, exit code 0 [2021-11-23 16:52:44,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:52:44,006 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:52:44,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:52:44,006 INFO L85 PathProgramCache]: Analyzing trace with hash -385807786, now seen corresponding path program 1 times [2021-11-23 16:52:44,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:52:44,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151695251] [2021-11-23 16:52:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:52:44,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:52:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:52:44,007 INFO L229 MonitoredProcess]: Starting monitored process 136 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:52:44,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2021-11-23 16:52:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:52:44,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:52:44,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:52:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:52:45,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:52:45,948 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:52:45,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151695251] [2021-11-23 16:52:45,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151695251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:52:45,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:52:45,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 16:52:45,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919802242] [2021-11-23 16:52:45,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:52:45,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:52:45,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:52:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:52:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:52:45,950 INFO L87 Difference]: Start difference. First operand 297 states and 372 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:46,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:52:46,071 INFO L93 Difference]: Finished difference Result 381 states and 504 transitions. [2021-11-23 16:52:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 16:52:46,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-23 16:52:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:52:46,072 INFO L225 Difference]: With dead ends: 381 [2021-11-23 16:52:46,072 INFO L226 Difference]: Without dead ends: 234 [2021-11-23 16:52:46,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:52:46,073 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 35 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:52:46,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1834 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 101 Unchecked, 0.1s Time] [2021-11-23 16:52:46,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-23 16:52:46,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 218. [2021-11-23 16:52:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 1.2731481481481481) internal successors, (275), 217 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 275 transitions. [2021-11-23 16:52:46,086 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 275 transitions. Word has length 118 [2021-11-23 16:52:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:52:46,086 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 275 transitions. [2021-11-23 16:52:46,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 275 transitions. [2021-11-23 16:52:46,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 16:52:46,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:52:46,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:52:46,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (136)] Forceful destruction successful, exit code 0 [2021-11-23 16:52:46,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:52:46,301 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:52:46,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:52:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1119350499, now seen corresponding path program 1 times [2021-11-23 16:52:46,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:52:46,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223126196] [2021-11-23 16:52:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:52:46,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:52:46,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:52:46,303 INFO L229 MonitoredProcess]: Starting monitored process 137 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:52:46,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (137)] Waiting until timeout for monitored process [2021-11-23 16:52:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:52:46,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:52:46,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:52:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:52:48,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:52:48,049 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:52:48,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223126196] [2021-11-23 16:52:48,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223126196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:52:48,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:52:48,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:52:48,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859730121] [2021-11-23 16:52:48,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:52:48,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:52:48,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:52:48,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:52:48,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:52:48,051 INFO L87 Difference]: Start difference. First operand 218 states and 275 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:48,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:52:48,165 INFO L93 Difference]: Finished difference Result 320 states and 427 transitions. [2021-11-23 16:52:48,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:52:48,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-23 16:52:48,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:52:48,166 INFO L225 Difference]: With dead ends: 320 [2021-11-23 16:52:48,166 INFO L226 Difference]: Without dead ends: 218 [2021-11-23 16:52:48,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:52:48,167 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 64 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 310 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:52:48,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 1109 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 310 Unchecked, 0.1s Time] [2021-11-23 16:52:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-23 16:52:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-11-23 16:52:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 1.2685185185185186) internal successors, (274), 217 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 274 transitions. [2021-11-23 16:52:48,178 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 274 transitions. Word has length 118 [2021-11-23 16:52:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:52:48,178 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 274 transitions. [2021-11-23 16:52:48,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:52:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 274 transitions. [2021-11-23 16:52:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-23 16:52:48,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:52:48,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:52:48,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (137)] Forceful destruction successful, exit code 0 [2021-11-23 16:52:48,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:52:48,382 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:52:48,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:52:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash 936317779, now seen corresponding path program 1 times [2021-11-23 16:52:48,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:52:48,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780605013] [2021-11-23 16:52:48,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:52:48,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:52:48,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:52:48,385 INFO L229 MonitoredProcess]: Starting monitored process 138 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:52:48,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (138)] Waiting until timeout for monitored process [2021-11-23 16:52:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:52:48,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-23 16:52:48,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:54:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:54:46,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:54:46,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:54:46,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780605013] [2021-11-23 16:54:46,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780605013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:54:46,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:54:46,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-11-23 16:54:46,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231904359] [2021-11-23 16:54:46,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:54:46,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-23 16:54:46,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:54:46,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-23 16:54:46,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1322, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 16:54:46,711 INFO L87 Difference]: Start difference. First operand 218 states and 274 transitions. Second operand has 40 states, 40 states have (on average 3.0) internal successors, (120), 40 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:54:49,186 INFO L93 Difference]: Finished difference Result 255 states and 318 transitions. [2021-11-23 16:54:49,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-23 16:54:49,187 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.0) internal successors, (120), 40 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2021-11-23 16:54:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:54:49,187 INFO L225 Difference]: With dead ends: 255 [2021-11-23 16:54:49,187 INFO L226 Difference]: Without dead ends: 249 [2021-11-23 16:54:49,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 106.8s TimeCoverageRelationStatistics Valid=259, Invalid=1381, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 16:54:49,188 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 166 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1424 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 16:54:49,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 3622 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 1424 Unchecked, 0.2s Time] [2021-11-23 16:54:49,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-23 16:54:49,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-11-23 16:54:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.263157894736842) internal successors, (312), 248 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 312 transitions. [2021-11-23 16:54:49,206 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 312 transitions. Word has length 120 [2021-11-23 16:54:49,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:54:49,206 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 312 transitions. [2021-11-23 16:54:49,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.0) internal successors, (120), 40 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:49,206 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 312 transitions. [2021-11-23 16:54:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-23 16:54:49,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:54:49,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:54:49,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (138)] Forceful destruction successful, exit code 0 [2021-11-23 16:54:49,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:54:49,407 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:54:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:54:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2062289930, now seen corresponding path program 1 times [2021-11-23 16:54:49,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:54:49,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044562824] [2021-11-23 16:54:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:54:49,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:54:49,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:54:49,409 INFO L229 MonitoredProcess]: Starting monitored process 139 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:54:49,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2021-11-23 16:54:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:54:49,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:54:49,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:54:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:54:51,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:54:51,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:54:51,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044562824] [2021-11-23 16:54:51,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044562824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:54:51,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:54:51,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 16:54:51,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702363897] [2021-11-23 16:54:51,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:54:51,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:54:51,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:54:51,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:54:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:54:51,827 INFO L87 Difference]: Start difference. First operand 249 states and 312 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:51,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:54:51,923 INFO L93 Difference]: Finished difference Result 249 states and 312 transitions. [2021-11-23 16:54:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 16:54:51,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-23 16:54:51,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:54:51,924 INFO L225 Difference]: With dead ends: 249 [2021-11-23 16:54:51,924 INFO L226 Difference]: Without dead ends: 243 [2021-11-23 16:54:51,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:54:51,925 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 73 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:54:51,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 1524 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 111 Unchecked, 0.0s Time] [2021-11-23 16:54:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-23 16:54:51,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 212. [2021-11-23 16:54:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.2701421800947867) internal successors, (268), 211 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 268 transitions. [2021-11-23 16:54:51,937 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 268 transitions. Word has length 121 [2021-11-23 16:54:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:54:51,937 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 268 transitions. [2021-11-23 16:54:51,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:51,937 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 268 transitions. [2021-11-23 16:54:51,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-23 16:54:51,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:54:51,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:54:51,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (139)] Forceful destruction successful, exit code 0 [2021-11-23 16:54:52,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:54:52,138 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:54:52,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:54:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash -433113524, now seen corresponding path program 1 times [2021-11-23 16:54:52,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:54:52,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455252996] [2021-11-23 16:54:52,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:54:52,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:54:52,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:54:52,141 INFO L229 MonitoredProcess]: Starting monitored process 140 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:54:52,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (140)] Waiting until timeout for monitored process [2021-11-23 16:54:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:54:52,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:54:52,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:54:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:54:54,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:54:54,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:54:54,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455252996] [2021-11-23 16:54:54,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455252996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:54:54,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:54:54,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:54:54,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773285740] [2021-11-23 16:54:54,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:54:54,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:54:54,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:54:54,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:54:54,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:54:54,294 INFO L87 Difference]: Start difference. First operand 212 states and 268 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 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) [2021-11-23 16:54:54,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:54:54,415 INFO L93 Difference]: Finished difference Result 302 states and 406 transitions. [2021-11-23 16:54:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:54:54,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 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) Word has length 155 [2021-11-23 16:54:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:54:54,416 INFO L225 Difference]: With dead ends: 302 [2021-11-23 16:54:54,416 INFO L226 Difference]: Without dead ends: 212 [2021-11-23 16:54:54,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:54:54,417 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 75 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:54:54,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 823 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 174 Unchecked, 0.1s Time] [2021-11-23 16:54:54,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-23 16:54:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-23 16:54:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.2654028436018958) internal successors, (267), 211 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 267 transitions. [2021-11-23 16:54:54,428 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 267 transitions. Word has length 155 [2021-11-23 16:54:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:54:54,428 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 267 transitions. [2021-11-23 16:54:54,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 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) [2021-11-23 16:54:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 267 transitions. [2021-11-23 16:54:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-23 16:54:54,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:54:54,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:54:54,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (140)] Forceful destruction successful, exit code 0 [2021-11-23 16:54:54,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:54:54,630 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:54:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:54:54,630 INFO L85 PathProgramCache]: Analyzing trace with hash -419405900, now seen corresponding path program 1 times [2021-11-23 16:54:54,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:54:54,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546652616] [2021-11-23 16:54:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:54:54,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:54:54,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:54:54,632 INFO L229 MonitoredProcess]: Starting monitored process 141 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:54:54,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (141)] Waiting until timeout for monitored process [2021-11-23 16:54:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:54:55,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:54:55,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:54:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:54:55,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:54:55,337 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:54:55,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546652616] [2021-11-23 16:54:55,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546652616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:54:55,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:54:55,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:54:55,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642424516] [2021-11-23 16:54:55,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:54:55,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:54:55,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:54:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:54:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:54:55,338 INFO L87 Difference]: Start difference. First operand 212 states and 267 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 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) [2021-11-23 16:54:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:54:55,389 INFO L93 Difference]: Finished difference Result 372 states and 518 transitions. [2021-11-23 16:54:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:54:55,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 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) Word has length 157 [2021-11-23 16:54:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:54:55,391 INFO L225 Difference]: With dead ends: 372 [2021-11-23 16:54:55,391 INFO L226 Difference]: Without dead ends: 288 [2021-11-23 16:54:55,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:54:55,392 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 174 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:54:55,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 526 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:54:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-23 16:54:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 286. [2021-11-23 16:54:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.3473684210526315) internal successors, (384), 285 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 384 transitions. [2021-11-23 16:54:55,413 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 384 transitions. Word has length 157 [2021-11-23 16:54:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:54:55,413 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 384 transitions. [2021-11-23 16:54:55,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 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) [2021-11-23 16:54:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 384 transitions. [2021-11-23 16:54:55,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-23 16:54:55,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:54:55,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:54:55,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (141)] Forceful destruction successful, exit code 0 [2021-11-23 16:54:55,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:54:55,631 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:54:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:54:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2074274086, now seen corresponding path program 1 times [2021-11-23 16:54:55,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:54:55,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314184013] [2021-11-23 16:54:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:54:55,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:54:55,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:54:55,634 INFO L229 MonitoredProcess]: Starting monitored process 142 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:54:55,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (142)] Waiting until timeout for monitored process [2021-11-23 16:54:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:54:56,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:54:56,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:54:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:54:58,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:54:58,475 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:54:58,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314184013] [2021-11-23 16:54:58,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314184013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:54:58,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:54:58,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 16:54:58,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531515089] [2021-11-23 16:54:58,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:54:58,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:54:58,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:54:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:54:58,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:54:58,476 INFO L87 Difference]: Start difference. First operand 286 states and 384 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 8 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) [2021-11-23 16:54:58,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:54:58,629 INFO L93 Difference]: Finished difference Result 491 states and 690 transitions. [2021-11-23 16:54:58,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 16:54:58,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 8 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-23 16:54:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:54:58,631 INFO L225 Difference]: With dead ends: 491 [2021-11-23 16:54:58,631 INFO L226 Difference]: Without dead ends: 333 [2021-11-23 16:54:58,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:54:58,632 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 97 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:54:58,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1213 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 323 Unchecked, 0.1s Time] [2021-11-23 16:54:58,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-23 16:54:58,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2021-11-23 16:54:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.3242424242424242) internal successors, (437), 330 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 437 transitions. [2021-11-23 16:54:58,663 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 437 transitions. Word has length 158 [2021-11-23 16:54:58,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:54:58,664 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 437 transitions. [2021-11-23 16:54:58,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 8 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) [2021-11-23 16:54:58,664 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 437 transitions. [2021-11-23 16:54:58,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-23 16:54:58,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:54:58,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:54:58,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (142)] Forceful destruction successful, exit code 0 [2021-11-23 16:54:58,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:54:58,883 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:54:58,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:54:58,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2062394369, now seen corresponding path program 1 times [2021-11-23 16:54:58,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:54:58,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939737645] [2021-11-23 16:54:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:54:58,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:54:58,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:54:58,885 INFO L229 MonitoredProcess]: Starting monitored process 143 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:54:58,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (143)] Waiting until timeout for monitored process [2021-11-23 16:54:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:54:59,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:54:59,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:54:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:54:59,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:54:59,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:54:59,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939737645] [2021-11-23 16:54:59,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939737645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:54:59,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:54:59,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:54:59,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437445972] [2021-11-23 16:54:59,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:54:59,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:54:59,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:54:59,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:54:59,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:54:59,656 INFO L87 Difference]: Start difference. First operand 331 states and 437 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:54:59,705 INFO L93 Difference]: Finished difference Result 631 states and 909 transitions. [2021-11-23 16:54:59,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:54:59,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-23 16:54:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:54:59,706 INFO L225 Difference]: With dead ends: 631 [2021-11-23 16:54:59,706 INFO L226 Difference]: Without dead ends: 473 [2021-11-23 16:54:59,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:54:59,707 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 166 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:54:59,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 526 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:54:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-23 16:54:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 471. [2021-11-23 16:54:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.397872340425532) internal successors, (657), 470 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 657 transitions. [2021-11-23 16:54:59,729 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 657 transitions. Word has length 158 [2021-11-23 16:54:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:54:59,729 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 657 transitions. [2021-11-23 16:54:59,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:54:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 657 transitions. [2021-11-23 16:54:59,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 16:54:59,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:54:59,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:54:59,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (143)] Forceful destruction successful, exit code 0 [2021-11-23 16:54:59,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:54:59,931 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:54:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:54:59,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1549158580, now seen corresponding path program 1 times [2021-11-23 16:54:59,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:54:59,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113872891] [2021-11-23 16:54:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:54:59,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:54:59,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:54:59,933 INFO L229 MonitoredProcess]: Starting monitored process 144 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:54:59,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (144)] Waiting until timeout for monitored process [2021-11-23 16:55:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:00,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:55:00,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:02,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:02,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:02,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113872891] [2021-11-23 16:55:02,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113872891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:02,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:02,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 16:55:02,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337165580] [2021-11-23 16:55:02,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:02,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:55:02,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:02,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:55:02,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:55:02,683 INFO L87 Difference]: Start difference. First operand 471 states and 657 transitions. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 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) [2021-11-23 16:55:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:02,868 INFO L93 Difference]: Finished difference Result 854 states and 1229 transitions. [2021-11-23 16:55:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 16:55:02,869 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 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) Word has length 159 [2021-11-23 16:55:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:02,870 INFO L225 Difference]: With dead ends: 854 [2021-11-23 16:55:02,870 INFO L226 Difference]: Without dead ends: 556 [2021-11-23 16:55:02,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:55:02,871 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 110 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:02,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 913 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 122 Unchecked, 0.1s Time] [2021-11-23 16:55:02,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-11-23 16:55:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 554. [2021-11-23 16:55:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.3670886075949367) internal successors, (756), 553 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:02,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 756 transitions. [2021-11-23 16:55:02,923 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 756 transitions. Word has length 159 [2021-11-23 16:55:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:02,923 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 756 transitions. [2021-11-23 16:55:02,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 8 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) [2021-11-23 16:55:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 756 transitions. [2021-11-23 16:55:02,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 16:55:02,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:02,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:02,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (144)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:03,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:03,139 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:03,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:03,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1982945009, now seen corresponding path program 1 times [2021-11-23 16:55:03,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:03,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125839710] [2021-11-23 16:55:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:03,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:03,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:03,141 INFO L229 MonitoredProcess]: Starting monitored process 145 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:03,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (145)] Waiting until timeout for monitored process [2021-11-23 16:55:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:03,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:55:03,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:03,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:03,914 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:03,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125839710] [2021-11-23 16:55:03,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125839710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:03,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:03,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:55:03,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541950677] [2021-11-23 16:55:03,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:03,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:55:03,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:55:03,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:03,916 INFO L87 Difference]: Start difference. First operand 554 states and 756 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 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) [2021-11-23 16:55:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:03,978 INFO L93 Difference]: Finished difference Result 1118 states and 1642 transitions. [2021-11-23 16:55:03,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:55:03,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 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) Word has length 159 [2021-11-23 16:55:03,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:03,980 INFO L225 Difference]: With dead ends: 1118 [2021-11-23 16:55:03,980 INFO L226 Difference]: Without dead ends: 820 [2021-11-23 16:55:03,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:03,981 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 158 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:03,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 526 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:55:03,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-11-23 16:55:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 818. [2021-11-23 16:55:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 1.4296205630354957) internal successors, (1168), 817 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1168 transitions. [2021-11-23 16:55:04,023 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1168 transitions. Word has length 159 [2021-11-23 16:55:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:04,023 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1168 transitions. [2021-11-23 16:55:04,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 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) [2021-11-23 16:55:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1168 transitions. [2021-11-23 16:55:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 16:55:04,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:04,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:04,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (145)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:04,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:04,225 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:04,225 INFO L85 PathProgramCache]: Analyzing trace with hash 571046184, now seen corresponding path program 1 times [2021-11-23 16:55:04,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:04,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990847179] [2021-11-23 16:55:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:04,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:04,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:04,227 INFO L229 MonitoredProcess]: Starting monitored process 146 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:04,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (146)] Waiting until timeout for monitored process [2021-11-23 16:55:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:04,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:55:04,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:04,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:04,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:04,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990847179] [2021-11-23 16:55:04,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990847179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:04,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:04,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:55:04,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843700533] [2021-11-23 16:55:04,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:04,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:55:04,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:04,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:55:04,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:04,968 INFO L87 Difference]: Start difference. First operand 818 states and 1168 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 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) [2021-11-23 16:55:05,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:05,040 INFO L93 Difference]: Finished difference Result 1878 states and 2826 transitions. [2021-11-23 16:55:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:55:05,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 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) Word has length 160 [2021-11-23 16:55:05,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:05,042 INFO L225 Difference]: With dead ends: 1878 [2021-11-23 16:55:05,042 INFO L226 Difference]: Without dead ends: 1316 [2021-11-23 16:55:05,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:05,043 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 150 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:05,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 526 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:55:05,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-11-23 16:55:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1314. [2021-11-23 16:55:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 1.4744859101294745) internal successors, (1936), 1313 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:05,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1936 transitions. [2021-11-23 16:55:05,093 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1936 transitions. Word has length 160 [2021-11-23 16:55:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:05,093 INFO L470 AbstractCegarLoop]: Abstraction has 1314 states and 1936 transitions. [2021-11-23 16:55:05,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 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) [2021-11-23 16:55:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1936 transitions. [2021-11-23 16:55:05,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-23 16:55:05,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:05,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:05,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (146)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:05,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:05,295 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:05,295 INFO L85 PathProgramCache]: Analyzing trace with hash 411641121, now seen corresponding path program 1 times [2021-11-23 16:55:05,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:05,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342847225] [2021-11-23 16:55:05,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:05,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:05,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:05,297 INFO L229 MonitoredProcess]: Starting monitored process 147 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:05,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (147)] Waiting until timeout for monitored process [2021-11-23 16:55:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:05,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:55:05,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:08,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:08,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:08,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342847225] [2021-11-23 16:55:08,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342847225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:08,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:08,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 16:55:08,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555998893] [2021-11-23 16:55:08,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:08,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:55:08,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:08,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:55:08,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:55:08,263 INFO L87 Difference]: Start difference. First operand 1314 states and 1936 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:08,405 INFO L93 Difference]: Finished difference Result 2504 states and 3747 transitions. [2021-11-23 16:55:08,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 16:55:08,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-11-23 16:55:08,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:08,407 INFO L225 Difference]: With dead ends: 2504 [2021-11-23 16:55:08,407 INFO L226 Difference]: Without dead ends: 1446 [2021-11-23 16:55:08,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:55:08,409 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 111 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:08,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 1090 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 244 Unchecked, 0.1s Time] [2021-11-23 16:55:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-11-23 16:55:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1444. [2021-11-23 16:55:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.4511434511434511) internal successors, (2094), 1443 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2094 transitions. [2021-11-23 16:55:08,492 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2094 transitions. Word has length 161 [2021-11-23 16:55:08,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:08,492 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 2094 transitions. [2021-11-23 16:55:08,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2094 transitions. [2021-11-23 16:55:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-23 16:55:08,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:08,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:08,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (147)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:08,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:08,694 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:08,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:08,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1035388474, now seen corresponding path program 1 times [2021-11-23 16:55:08,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:08,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140777277] [2021-11-23 16:55:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:08,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:08,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:08,696 INFO L229 MonitoredProcess]: Starting monitored process 148 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:08,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (148)] Waiting until timeout for monitored process [2021-11-23 16:55:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:09,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:55:09,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:09,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:09,459 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:09,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140777277] [2021-11-23 16:55:09,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140777277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:09,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:09,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:55:09,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661082242] [2021-11-23 16:55:09,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:09,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:55:09,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:55:09,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:09,460 INFO L87 Difference]: Start difference. First operand 1444 states and 2094 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:09,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:09,555 INFO L93 Difference]: Finished difference Result 3432 states and 5184 transitions. [2021-11-23 16:55:09,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:55:09,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2021-11-23 16:55:09,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:09,560 INFO L225 Difference]: With dead ends: 3432 [2021-11-23 16:55:09,560 INFO L226 Difference]: Without dead ends: 2374 [2021-11-23 16:55:09,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:09,563 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 142 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:09,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 526 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:55:09,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2021-11-23 16:55:09,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2372. [2021-11-23 16:55:09,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2371 states have (on average 1.4837621256853648) internal successors, (3518), 2371 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3518 transitions. [2021-11-23 16:55:09,670 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3518 transitions. Word has length 161 [2021-11-23 16:55:09,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:09,670 INFO L470 AbstractCegarLoop]: Abstraction has 2372 states and 3518 transitions. [2021-11-23 16:55:09,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:09,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3518 transitions. [2021-11-23 16:55:09,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-23 16:55:09,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:09,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:09,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (148)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:09,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:09,872 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:09,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:09,872 INFO L85 PathProgramCache]: Analyzing trace with hash -15756823, now seen corresponding path program 1 times [2021-11-23 16:55:09,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:09,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696719593] [2021-11-23 16:55:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:09,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:09,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:09,875 INFO L229 MonitoredProcess]: Starting monitored process 149 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:09,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (149)] Waiting until timeout for monitored process [2021-11-23 16:55:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:10,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:55:10,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:10,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:10,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:10,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696719593] [2021-11-23 16:55:10,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696719593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:10,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:10,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:55:10,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190858217] [2021-11-23 16:55:10,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:10,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:55:10,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:10,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:55:10,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:10,648 INFO L87 Difference]: Start difference. First operand 2372 states and 3518 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:10,766 INFO L93 Difference]: Finished difference Result 6088 states and 9248 transitions. [2021-11-23 16:55:10,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:55:10,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2021-11-23 16:55:10,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:10,772 INFO L225 Difference]: With dead ends: 6088 [2021-11-23 16:55:10,772 INFO L226 Difference]: Without dead ends: 4102 [2021-11-23 16:55:10,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:10,775 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 134 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:10,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 526 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:55:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-11-23 16:55:10,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4100. [2021-11-23 16:55:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4099 states have (on average 1.4984142473774091) internal successors, (6142), 4099 states have internal predecessors, (6142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:10,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 6142 transitions. [2021-11-23 16:55:10,975 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 6142 transitions. Word has length 162 [2021-11-23 16:55:10,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:10,975 INFO L470 AbstractCegarLoop]: Abstraction has 4100 states and 6142 transitions. [2021-11-23 16:55:10,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:10,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 6142 transitions. [2021-11-23 16:55:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-23 16:55:10,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:10,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:10,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (149)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:11,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:11,177 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:11,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1895387506, now seen corresponding path program 1 times [2021-11-23 16:55:11,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:11,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385312685] [2021-11-23 16:55:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:11,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:11,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:11,180 INFO L229 MonitoredProcess]: Starting monitored process 150 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:11,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (150)] Waiting until timeout for monitored process [2021-11-23 16:55:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:11,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:55:11,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:14,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:14,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:14,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385312685] [2021-11-23 16:55:14,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385312685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:14,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:14,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 16:55:14,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28014491] [2021-11-23 16:55:14,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:14,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:55:14,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:14,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:55:14,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:55:14,176 INFO L87 Difference]: Start difference. First operand 4100 states and 6142 transitions. Second operand has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:14,385 INFO L93 Difference]: Finished difference Result 7991 states and 12062 transitions. [2021-11-23 16:55:14,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 16:55:14,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-23 16:55:14,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:14,390 INFO L225 Difference]: With dead ends: 7991 [2021-11-23 16:55:14,390 INFO L226 Difference]: Without dead ends: 4277 [2021-11-23 16:55:14,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:55:14,394 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 102 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:14,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1127 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 223 Unchecked, 0.1s Time] [2021-11-23 16:55:14,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-11-23 16:55:14,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 4275. [2021-11-23 16:55:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4275 states, 4274 states have (on average 1.4883013570425832) internal successors, (6361), 4274 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4275 states to 4275 states and 6361 transitions. [2021-11-23 16:55:14,537 INFO L78 Accepts]: Start accepts. Automaton has 4275 states and 6361 transitions. Word has length 163 [2021-11-23 16:55:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:14,537 INFO L470 AbstractCegarLoop]: Abstraction has 4275 states and 6361 transitions. [2021-11-23 16:55:14,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:14,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4275 states and 6361 transitions. [2021-11-23 16:55:14,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-23 16:55:14,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:14,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:14,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (150)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:14,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:14,739 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:14,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1773914061, now seen corresponding path program 1 times [2021-11-23 16:55:14,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:14,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10926462] [2021-11-23 16:55:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:14,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:14,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:14,741 INFO L229 MonitoredProcess]: Starting monitored process 151 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:14,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (151)] Waiting until timeout for monitored process [2021-11-23 16:55:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:15,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:55:15,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:19,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:19,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:19,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10926462] [2021-11-23 16:55:19,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10926462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:19,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:19,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 16:55:19,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578686076] [2021-11-23 16:55:19,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:19,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:55:19,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:55:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:55:19,166 INFO L87 Difference]: Start difference. First operand 4275 states and 6361 transitions. Second operand has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:20,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:20,397 INFO L93 Difference]: Finished difference Result 33987 states and 51937 transitions. [2021-11-23 16:55:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:55:20,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-23 16:55:20,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:20,442 INFO L225 Difference]: With dead ends: 33987 [2021-11-23 16:55:20,443 INFO L226 Difference]: Without dead ends: 30273 [2021-11-23 16:55:20,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:55:20,451 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 1988 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:20,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 1269 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 16:55:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30273 states. [2021-11-23 16:55:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30273 to 11699. [2021-11-23 16:55:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11699 states, 11698 states have (on average 1.5011967857753463) internal successors, (17561), 11698 states have internal predecessors, (17561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:21,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11699 states to 11699 states and 17561 transitions. [2021-11-23 16:55:21,309 INFO L78 Accepts]: Start accepts. Automaton has 11699 states and 17561 transitions. Word has length 163 [2021-11-23 16:55:21,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:21,309 INFO L470 AbstractCegarLoop]: Abstraction has 11699 states and 17561 transitions. [2021-11-23 16:55:21,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 11699 states and 17561 transitions. [2021-11-23 16:55:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 16:55:21,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:21,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:21,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (151)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:21,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:21,514 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:21,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash -802860140, now seen corresponding path program 1 times [2021-11-23 16:55:21,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:21,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235192173] [2021-11-23 16:55:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:21,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:21,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:21,516 INFO L229 MonitoredProcess]: Starting monitored process 152 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:21,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (152)] Waiting until timeout for monitored process [2021-11-23 16:55:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:22,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 16:55:22,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:22,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:22,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:22,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235192173] [2021-11-23 16:55:22,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235192173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:22,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:22,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:55:22,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882570326] [2021-11-23 16:55:22,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:22,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 16:55:22,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:22,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 16:55:22,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 16:55:22,670 INFO L87 Difference]: Start difference. First operand 11699 states and 17561 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 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) [2021-11-23 16:55:23,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:23,320 INFO L93 Difference]: Finished difference Result 22884 states and 34522 transitions. [2021-11-23 16:55:23,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 16:55:23,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 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) Word has length 165 [2021-11-23 16:55:23,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:23,335 INFO L225 Difference]: With dead ends: 22884 [2021-11-23 16:55:23,335 INFO L226 Difference]: Without dead ends: 11746 [2021-11-23 16:55:23,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 16:55:23,344 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 36 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:23,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 636 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2021-11-23 16:55:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11746 states. [2021-11-23 16:55:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11746 to 11745. [2021-11-23 16:55:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11745 states, 11744 states have (on average 1.5005108991825613) internal successors, (17622), 11744 states have internal predecessors, (17622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11745 states to 11745 states and 17622 transitions. [2021-11-23 16:55:24,214 INFO L78 Accepts]: Start accepts. Automaton has 11745 states and 17622 transitions. Word has length 165 [2021-11-23 16:55:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:24,214 INFO L470 AbstractCegarLoop]: Abstraction has 11745 states and 17622 transitions. [2021-11-23 16:55:24,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 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) [2021-11-23 16:55:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 11745 states and 17622 transitions. [2021-11-23 16:55:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-23 16:55:24,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:24,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:24,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (152)] Ended with exit code 0 [2021-11-23 16:55:24,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:24,416 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:24,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:24,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2084455929, now seen corresponding path program 1 times [2021-11-23 16:55:24,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:24,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005233873] [2021-11-23 16:55:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:24,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:24,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:24,418 INFO L229 MonitoredProcess]: Starting monitored process 153 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:24,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (153)] Waiting until timeout for monitored process [2021-11-23 16:55:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:24,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:55:24,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:25,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:25,213 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:25,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005233873] [2021-11-23 16:55:25,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005233873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:25,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:25,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:55:25,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151748352] [2021-11-23 16:55:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:25,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:55:25,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:25,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:55:25,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:25,215 INFO L87 Difference]: Start difference. First operand 11745 states and 17622 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:26,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:26,216 INFO L93 Difference]: Finished difference Result 32101 states and 48344 transitions. [2021-11-23 16:55:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:55:26,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-23 16:55:26,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:26,247 INFO L225 Difference]: With dead ends: 32101 [2021-11-23 16:55:26,247 INFO L226 Difference]: Without dead ends: 20963 [2021-11-23 16:55:26,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:26,259 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 179 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:26,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 534 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:55:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20963 states. [2021-11-23 16:55:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20963 to 20961. [2021-11-23 16:55:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20961 states, 20960 states have (on average 1.4903625954198474) internal successors, (31238), 20960 states have internal predecessors, (31238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20961 states to 20961 states and 31238 transitions. [2021-11-23 16:55:27,683 INFO L78 Accepts]: Start accepts. Automaton has 20961 states and 31238 transitions. Word has length 166 [2021-11-23 16:55:27,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:27,683 INFO L470 AbstractCegarLoop]: Abstraction has 20961 states and 31238 transitions. [2021-11-23 16:55:27,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:27,683 INFO L276 IsEmpty]: Start isEmpty. Operand 20961 states and 31238 transitions. [2021-11-23 16:55:27,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-23 16:55:27,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:27,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:27,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (153)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:27,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:27,886 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:27,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:27,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2015881743, now seen corresponding path program 1 times [2021-11-23 16:55:27,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:27,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832983685] [2021-11-23 16:55:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:27,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:27,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:27,888 INFO L229 MonitoredProcess]: Starting monitored process 154 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:27,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (154)] Waiting until timeout for monitored process [2021-11-23 16:55:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:28,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 16:55:28,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:28,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:28,668 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:28,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832983685] [2021-11-23 16:55:28,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832983685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:28,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:28,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 16:55:28,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970912646] [2021-11-23 16:55:28,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:28,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:55:28,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:28,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:55:28,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:55:28,671 INFO L87 Difference]: Start difference. First operand 20961 states and 31238 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 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) [2021-11-23 16:55:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:31,473 INFO L93 Difference]: Finished difference Result 42856 states and 63309 transitions. [2021-11-23 16:55:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 16:55:31,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-23 16:55:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:31,537 INFO L225 Difference]: With dead ends: 42856 [2021-11-23 16:55:31,537 INFO L226 Difference]: Without dead ends: 42854 [2021-11-23 16:55:31,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:55:31,546 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 433 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1062 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 [2021-11-23 16:55:31,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 1062 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 16:55:31,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42854 states. [2021-11-23 16:55:33,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42854 to 22113. [2021-11-23 16:55:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22113 states, 22112 states have (on average 1.4648154848046309) internal successors, (32390), 22112 states have internal predecessors, (32390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22113 states to 22113 states and 32390 transitions. [2021-11-23 16:55:33,648 INFO L78 Accepts]: Start accepts. Automaton has 22113 states and 32390 transitions. Word has length 166 [2021-11-23 16:55:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:33,649 INFO L470 AbstractCegarLoop]: Abstraction has 22113 states and 32390 transitions. [2021-11-23 16:55:33,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 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) [2021-11-23 16:55:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 22113 states and 32390 transitions. [2021-11-23 16:55:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-23 16:55:33,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:33,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:33,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (154)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:33,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:33,851 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:33,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:33,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1946345928, now seen corresponding path program 1 times [2021-11-23 16:55:33,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:33,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711654649] [2021-11-23 16:55:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:33,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:33,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:33,853 INFO L229 MonitoredProcess]: Starting monitored process 155 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:33,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (155)] Waiting until timeout for monitored process [2021-11-23 16:55:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:34,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 16:55:34,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:35,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:35,177 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:35,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711654649] [2021-11-23 16:55:35,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711654649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:35,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:35,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:55:35,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536738953] [2021-11-23 16:55:35,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:35,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 16:55:35,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:35,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 16:55:35,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 16:55:35,180 INFO L87 Difference]: Start difference. First operand 22113 states and 32390 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 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) [2021-11-23 16:55:36,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:36,806 INFO L93 Difference]: Finished difference Result 43621 states and 64074 transitions. [2021-11-23 16:55:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 16:55:36,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 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) Word has length 167 [2021-11-23 16:55:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:36,836 INFO L225 Difference]: With dead ends: 43621 [2021-11-23 16:55:36,836 INFO L226 Difference]: Without dead ends: 22115 [2021-11-23 16:55:36,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 16:55:36,852 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 35 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:36,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 637 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2021-11-23 16:55:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22115 states. [2021-11-23 16:55:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22115 to 22115. [2021-11-23 16:55:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22115 states, 22114 states have (on average 1.4647734466853577) internal successors, (32392), 22114 states have internal predecessors, (32392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22115 states to 22115 states and 32392 transitions. [2021-11-23 16:55:38,571 INFO L78 Accepts]: Start accepts. Automaton has 22115 states and 32392 transitions. Word has length 167 [2021-11-23 16:55:38,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:38,571 INFO L470 AbstractCegarLoop]: Abstraction has 22115 states and 32392 transitions. [2021-11-23 16:55:38,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 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) [2021-11-23 16:55:38,571 INFO L276 IsEmpty]: Start isEmpty. Operand 22115 states and 32392 transitions. [2021-11-23 16:55:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-23 16:55:38,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:38,581 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:38,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (155)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:38,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:38,786 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:38,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:38,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1343481750, now seen corresponding path program 1 times [2021-11-23 16:55:38,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:38,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715976944] [2021-11-23 16:55:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:38,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:38,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:38,788 INFO L229 MonitoredProcess]: Starting monitored process 156 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:38,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (156)] Waiting until timeout for monitored process [2021-11-23 16:55:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:39,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 16:55:39,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:39,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:39,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:39,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715976944] [2021-11-23 16:55:39,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715976944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:39,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:39,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 16:55:39,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124253975] [2021-11-23 16:55:39,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:39,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 16:55:39,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:39,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 16:55:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:39,760 INFO L87 Difference]: Start difference. First operand 22115 states and 32392 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:41,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:41,548 INFO L93 Difference]: Finished difference Result 43623 states and 64074 transitions. [2021-11-23 16:55:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 16:55:41,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2021-11-23 16:55:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:41,583 INFO L225 Difference]: With dead ends: 43623 [2021-11-23 16:55:41,583 INFO L226 Difference]: Without dead ends: 22117 [2021-11-23 16:55:41,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 16:55:41,608 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 114 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:41,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 540 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:55:41,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22117 states. [2021-11-23 16:55:43,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22117 to 22115. [2021-11-23 16:55:43,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22115 states, 22114 states have (on average 1.4560911639685268) internal successors, (32200), 22114 states have internal predecessors, (32200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22115 states to 22115 states and 32200 transitions. [2021-11-23 16:55:43,364 INFO L78 Accepts]: Start accepts. Automaton has 22115 states and 32200 transitions. Word has length 203 [2021-11-23 16:55:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:43,365 INFO L470 AbstractCegarLoop]: Abstraction has 22115 states and 32200 transitions. [2021-11-23 16:55:43,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 22115 states and 32200 transitions. [2021-11-23 16:55:43,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-23 16:55:43,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:43,369 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:43,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (156)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:43,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:43,570 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:43,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:43,570 INFO L85 PathProgramCache]: Analyzing trace with hash 180125985, now seen corresponding path program 1 times [2021-11-23 16:55:43,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:43,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843066789] [2021-11-23 16:55:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:43,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:43,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:43,572 INFO L229 MonitoredProcess]: Starting monitored process 157 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:43,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (157)] Waiting until timeout for monitored process [2021-11-23 16:55:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:44,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 16:55:44,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 16:55:44,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:55:44,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:44,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843066789] [2021-11-23 16:55:44,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843066789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:55:44,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:55:44,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 16:55:44,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996043893] [2021-11-23 16:55:44,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:55:44,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 16:55:44,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:55:44,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 16:55:44,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 16:55:44,998 INFO L87 Difference]: Start difference. First operand 22115 states and 32200 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:46,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:55:46,790 INFO L93 Difference]: Finished difference Result 43627 states and 63696 transitions. [2021-11-23 16:55:46,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 16:55:46,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 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 204 [2021-11-23 16:55:46,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:55:46,820 INFO L225 Difference]: With dead ends: 43627 [2021-11-23 16:55:46,820 INFO L226 Difference]: Without dead ends: 22121 [2021-11-23 16:55:46,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 16:55:46,836 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 35 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:55:46,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 636 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2021-11-23 16:55:46,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22121 states. [2021-11-23 16:55:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22121 to 22121. [2021-11-23 16:55:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22121 states, 22120 states have (on average 1.4559674502712476) internal successors, (32206), 22120 states have internal predecessors, (32206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22121 states to 22121 states and 32206 transitions. [2021-11-23 16:55:48,700 INFO L78 Accepts]: Start accepts. Automaton has 22121 states and 32206 transitions. Word has length 204 [2021-11-23 16:55:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:55:48,701 INFO L470 AbstractCegarLoop]: Abstraction has 22121 states and 32206 transitions. [2021-11-23 16:55:48,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 4 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:55:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 22121 states and 32206 transitions. [2021-11-23 16:55:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-23 16:55:48,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:55:48,706 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:55:48,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (157)] Forceful destruction successful, exit code 0 [2021-11-23 16:55:48,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:55:48,907 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:55:48,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:55:48,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1652681924, now seen corresponding path program 1 times [2021-11-23 16:55:48,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:55:48,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715078916] [2021-11-23 16:55:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:48,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:55:48,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:55:48,909 INFO L229 MonitoredProcess]: Starting monitored process 158 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:55:48,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (158)] Waiting until timeout for monitored process [2021-11-23 16:55:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:49,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 16:55:49,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:52,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:55:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:54,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:55:54,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715078916] [2021-11-23 16:55:54,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715078916] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:55:54,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [808380823] [2021-11-23 16:55:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:54,416 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:55:54,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:55:54,419 INFO L229 MonitoredProcess]: Starting monitored process 159 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:55:54,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (159)] Waiting until timeout for monitored process [2021-11-23 16:55:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:55:55,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 16:55:55,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:55:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:58,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:55:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:55:59,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [808380823] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:55:59,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376530869] [2021-11-23 16:55:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:55:59,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:55:59,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:55:59,677 INFO L229 MonitoredProcess]: Starting monitored process 160 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:55:59,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2021-11-23 16:56:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:00,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:56:00,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:56:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:02,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:56:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:04,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376530869] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:56:04,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 16:56:04,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 8, 8] total 31 [2021-11-23 16:56:04,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003090899] [2021-11-23 16:56:04,148 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 16:56:04,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 16:56:04,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:56:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 16:56:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2021-11-23 16:56:04,151 INFO L87 Difference]: Start difference. First operand 22121 states and 32206 transitions. Second operand has 32 states, 32 states have (on average 19.84375) internal successors, (635), 31 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:56:06,607 INFO L93 Difference]: Finished difference Result 43681 states and 63763 transitions. [2021-11-23 16:56:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 16:56:06,607 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 19.84375) internal successors, (635), 31 states have internal predecessors, (635), 0 states have call successors, (0), 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 204 [2021-11-23 16:56:06,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:56:06,637 INFO L225 Difference]: With dead ends: 43681 [2021-11-23 16:56:06,637 INFO L226 Difference]: Without dead ends: 22175 [2021-11-23 16:56:06,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1230 GetRequests, 1191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=238, Invalid=1402, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 16:56:06,649 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 320 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 254 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 16:56:06,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 2569 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 205 Invalid, 0 Unknown, 254 Unchecked, 0.2s Time] [2021-11-23 16:56:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22175 states. [2021-11-23 16:56:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22175 to 22175. [2021-11-23 16:56:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22175 states, 22174 states have (on average 1.4554433119870118) internal successors, (32273), 22174 states have internal predecessors, (32273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:08,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22175 states to 22175 states and 32273 transitions. [2021-11-23 16:56:08,368 INFO L78 Accepts]: Start accepts. Automaton has 22175 states and 32273 transitions. Word has length 204 [2021-11-23 16:56:08,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:56:08,368 INFO L470 AbstractCegarLoop]: Abstraction has 22175 states and 32273 transitions. [2021-11-23 16:56:08,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 19.84375) internal successors, (635), 31 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:08,369 INFO L276 IsEmpty]: Start isEmpty. Operand 22175 states and 32273 transitions. [2021-11-23 16:56:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-23 16:56:08,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:56:08,373 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:56:08,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (159)] Forceful destruction successful, exit code 0 [2021-11-23 16:56:08,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (158)] Ended with exit code 0 [2021-11-23 16:56:08,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2021-11-23 16:56:08,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,158 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,160 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:56:08,974 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:56:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:56:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1217337016, now seen corresponding path program 1 times [2021-11-23 16:56:08,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:56:08,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123319287] [2021-11-23 16:56:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:08,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:56:08,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:56:08,976 INFO L229 MonitoredProcess]: Starting monitored process 161 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:56:08,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (161)] Waiting until timeout for monitored process [2021-11-23 16:56:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:09,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 16:56:09,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:56:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:12,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:56:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:13,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:56:13,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123319287] [2021-11-23 16:56:13,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123319287] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:56:13,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1435095443] [2021-11-23 16:56:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:13,802 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:56:13,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:56:13,803 INFO L229 MonitoredProcess]: Starting monitored process 162 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:56:13,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (162)] Waiting until timeout for monitored process [2021-11-23 16:56:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:14,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 16:56:14,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:56:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:17,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:56:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:18,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1435095443] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:56:18,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878398387] [2021-11-23 16:56:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:18,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:56:18,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:56:18,993 INFO L229 MonitoredProcess]: Starting monitored process 163 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:56:18,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2021-11-23 16:56:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:19,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:56:19,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:56:22,764 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:22,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:56:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:56:23,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878398387] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:56:23,708 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 16:56:23,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 8, 8] total 29 [2021-11-23 16:56:23,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431700780] [2021-11-23 16:56:23,709 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 16:56:23,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-23 16:56:23,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:56:23,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-23 16:56:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2021-11-23 16:56:23,710 INFO L87 Difference]: Start difference. First operand 22175 states and 32273 transitions. Second operand has 30 states, 30 states have (on average 21.233333333333334) internal successors, (637), 29 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:56:25,625 INFO L93 Difference]: Finished difference Result 44611 states and 64803 transitions. [2021-11-23 16:56:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 16:56:25,626 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 21.233333333333334) internal successors, (637), 29 states have internal predecessors, (637), 0 states have call successors, (0), 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 204 [2021-11-23 16:56:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:56:25,658 INFO L225 Difference]: With dead ends: 44611 [2021-11-23 16:56:25,658 INFO L226 Difference]: Without dead ends: 23105 [2021-11-23 16:56:25,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1226 GetRequests, 1192 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=186, Invalid=1074, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 16:56:25,676 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 280 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:56:25,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 2437 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 181 Unchecked, 0.1s Time] [2021-11-23 16:56:25,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23105 states. [2021-11-23 16:56:27,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23105 to 22719. [2021-11-23 16:56:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22719 states, 22718 states have (on average 1.4492472928955014) internal successors, (32924), 22718 states have internal predecessors, (32924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22719 states to 22719 states and 32924 transitions. [2021-11-23 16:56:27,607 INFO L78 Accepts]: Start accepts. Automaton has 22719 states and 32924 transitions. Word has length 204 [2021-11-23 16:56:27,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:56:27,607 INFO L470 AbstractCegarLoop]: Abstraction has 22719 states and 32924 transitions. [2021-11-23 16:56:27,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 21.233333333333334) internal successors, (637), 29 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:27,607 INFO L276 IsEmpty]: Start isEmpty. Operand 22719 states and 32924 transitions. [2021-11-23 16:56:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-23 16:56:27,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:56:27,612 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:56:27,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (161)] Forceful destruction successful, exit code 0 [2021-11-23 16:56:27,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (162)] Ended with exit code 0 [2021-11-23 16:56:28,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2021-11-23 16:56:28,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,162 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,163 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:56:28,213 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:56:28,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:56:28,213 INFO L85 PathProgramCache]: Analyzing trace with hash -121264156, now seen corresponding path program 1 times [2021-11-23 16:56:28,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:56:28,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749272263] [2021-11-23 16:56:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:28,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:56:28,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:56:28,215 INFO L229 MonitoredProcess]: Starting monitored process 164 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:56:28,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (164)] Waiting until timeout for monitored process [2021-11-23 16:56:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:28,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:56:28,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:56:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-23 16:56:31,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:56:31,122 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:56:31,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749272263] [2021-11-23 16:56:31,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749272263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:56:31,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:56:31,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 16:56:31,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366567476] [2021-11-23 16:56:31,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:56:31,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:56:31,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:56:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:56:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:56:31,123 INFO L87 Difference]: Start difference. First operand 22719 states and 32924 transitions. Second operand has 9 states, 9 states have (on average 22.11111111111111) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:56:32,813 INFO L93 Difference]: Finished difference Result 45001 states and 65347 transitions. [2021-11-23 16:56:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 16:56:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.11111111111111) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 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 204 [2021-11-23 16:56:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:56:32,847 INFO L225 Difference]: With dead ends: 45001 [2021-11-23 16:56:32,847 INFO L226 Difference]: Without dead ends: 23475 [2021-11-23 16:56:32,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-23 16:56:32,865 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 111 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:56:32,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 858 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 124 Unchecked, 0.1s Time] [2021-11-23 16:56:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23475 states. [2021-11-23 16:56:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23475 to 23475. [2021-11-23 16:56:34,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23475 states, 23474 states have (on average 1.4412541535315668) internal successors, (33832), 23474 states have internal predecessors, (33832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23475 states to 23475 states and 33832 transitions. [2021-11-23 16:56:34,858 INFO L78 Accepts]: Start accepts. Automaton has 23475 states and 33832 transitions. Word has length 204 [2021-11-23 16:56:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:56:34,858 INFO L470 AbstractCegarLoop]: Abstraction has 23475 states and 33832 transitions. [2021-11-23 16:56:34,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.11111111111111) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 23475 states and 33832 transitions. [2021-11-23 16:56:34,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-23 16:56:34,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:56:34,863 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:56:34,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (164)] Forceful destruction successful, exit code 0 [2021-11-23 16:56:35,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:56:35,064 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:56:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:56:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2099407849, now seen corresponding path program 1 times [2021-11-23 16:56:35,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:56:35,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454952128] [2021-11-23 16:56:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:35,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:56:35,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:56:35,066 INFO L229 MonitoredProcess]: Starting monitored process 165 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:56:35,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (165)] Waiting until timeout for monitored process [2021-11-23 16:56:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:35,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 16:56:35,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:56:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 16:56:38,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:56:38,025 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:56:38,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454952128] [2021-11-23 16:56:38,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454952128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:56:38,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:56:38,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 16:56:38,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739106675] [2021-11-23 16:56:38,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:56:38,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 16:56:38,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:56:38,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 16:56:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:56:38,027 INFO L87 Difference]: Start difference. First operand 23475 states and 33832 transitions. Second operand has 9 states, 9 states have (on average 21.88888888888889) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:39,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:56:39,977 INFO L93 Difference]: Finished difference Result 46549 states and 67191 transitions. [2021-11-23 16:56:39,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:56:39,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.88888888888889) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 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 204 [2021-11-23 16:56:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:56:40,013 INFO L225 Difference]: With dead ends: 46549 [2021-11-23 16:56:40,013 INFO L226 Difference]: Without dead ends: 25011 [2021-11-23 16:56:40,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:56:40,030 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 95 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:56:40,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 956 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 163 Unchecked, 0.0s Time] [2021-11-23 16:56:40,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25011 states. [2021-11-23 16:56:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25011 to 25011. [2021-11-23 16:56:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25011 states, 25010 states have (on average 1.4253498600559775) internal successors, (35648), 25010 states have internal predecessors, (35648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:42,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25011 states to 25011 states and 35648 transitions. [2021-11-23 16:56:42,256 INFO L78 Accepts]: Start accepts. Automaton has 25011 states and 35648 transitions. Word has length 204 [2021-11-23 16:56:42,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:56:42,257 INFO L470 AbstractCegarLoop]: Abstraction has 25011 states and 35648 transitions. [2021-11-23 16:56:42,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.88888888888889) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:42,257 INFO L276 IsEmpty]: Start isEmpty. Operand 25011 states and 35648 transitions. [2021-11-23 16:56:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-23 16:56:42,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:56:42,264 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:56:42,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (165)] Forceful destruction successful, exit code 0 [2021-11-23 16:56:42,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:56:42,464 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:56:42,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:56:42,465 INFO L85 PathProgramCache]: Analyzing trace with hash 415023859, now seen corresponding path program 1 times [2021-11-23 16:56:42,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:56:42,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642861360] [2021-11-23 16:56:42,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:42,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:56:42,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:56:42,466 INFO L229 MonitoredProcess]: Starting monitored process 166 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:56:42,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (166)] Waiting until timeout for monitored process [2021-11-23 16:56:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:43,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:56:43,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:56:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 16:56:44,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:56:44,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:56:44,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642861360] [2021-11-23 16:56:44,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642861360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:56:44,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:56:44,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 16:56:44,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759570962] [2021-11-23 16:56:44,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:56:44,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 16:56:44,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:56:44,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 16:56:44,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:56:44,776 INFO L87 Difference]: Start difference. First operand 25011 states and 35648 transitions. Second operand has 8 states, 8 states have (on average 24.25) internal successors, (194), 7 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) [2021-11-23 16:56:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:56:47,067 INFO L93 Difference]: Finished difference Result 46567 states and 67199 transitions. [2021-11-23 16:56:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 16:56:47,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 7 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) Word has length 204 [2021-11-23 16:56:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:56:47,103 INFO L225 Difference]: With dead ends: 46567 [2021-11-23 16:56:47,103 INFO L226 Difference]: Without dead ends: 25011 [2021-11-23 16:56:47,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 16:56:47,118 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 80 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 16:56:47,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1002 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 230 Unchecked, 0.1s Time] [2021-11-23 16:56:47,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25011 states. [2021-11-23 16:56:49,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25011 to 25011. [2021-11-23 16:56:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25011 states, 25010 states have (on average 1.4227908836465415) internal successors, (35584), 25010 states have internal predecessors, (35584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 16:56:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25011 states to 25011 states and 35584 transitions. [2021-11-23 16:56:49,715 INFO L78 Accepts]: Start accepts. Automaton has 25011 states and 35584 transitions. Word has length 204 [2021-11-23 16:56:49,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:56:49,716 INFO L470 AbstractCegarLoop]: Abstraction has 25011 states and 35584 transitions. [2021-11-23 16:56:49,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 7 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) [2021-11-23 16:56:49,716 INFO L276 IsEmpty]: Start isEmpty. Operand 25011 states and 35584 transitions. [2021-11-23 16:56:49,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-23 16:56:49,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:56:49,723 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:56:49,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (166)] Forceful destruction successful, exit code 0 [2021-11-23 16:56:49,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:56:49,924 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-23 16:56:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:56:49,924 INFO L85 PathProgramCache]: Analyzing trace with hash 657305563, now seen corresponding path program 1 times [2021-11-23 16:56:49,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:56:49,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520211103] [2021-11-23 16:56:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:56:49,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:56:49,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:56:49,926 INFO L229 MonitoredProcess]: Starting monitored process 167 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:56:49,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcc07133-6ec6-48cc-8aca-b4366d65d9f4/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (167)] Waiting until timeout for monitored process [2021-11-23 16:56:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:56:50,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 16:56:50,498 INFO L286 TraceCheckSpWp]: Computing forward predicates...