./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh --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 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:50:50,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:50:50,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:50:50,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:50:50,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:50:50,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:50:50,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:50:50,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:50:50,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:50:50,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:50:50,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:50:50,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:50:50,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:50:50,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:50:50,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:50:50,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:50:50,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:50:50,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:50:50,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:50:50,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:50:50,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:50:50,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:50:50,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:50:50,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:50:50,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:50:50,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:50:50,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:50:50,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:50:50,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:50:50,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:50:50,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:50:50,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:50:50,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:50:50,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:50:50,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:50:50,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:50:50,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:50:50,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:50:50,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:50:50,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:50:50,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:50:50,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:50:50,334 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:50:50,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:50:50,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:50:50,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:50:50,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:50:50,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:50:50,335 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:50:50,335 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:50:50,335 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:50:50,336 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:50:50,336 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:50:50,336 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:50:50,336 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:50:50,336 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:50:50,336 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:50:50,336 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:50:50,336 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:50:50,336 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:50:50,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:50:50,337 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:50:50,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:50:50,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:50:50,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:50:50,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:50:50,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:50:50,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:50:50,338 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:50:50,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:50:50,338 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:50:50,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:50:50,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:50:50,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:50:50,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:50:50,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:50:50,338 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:50:50,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:50:50,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:50:50,339 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:50:50,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:50:50,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:50:50,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:50:50,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 [2022-12-14 06:50:50,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:50:50,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:50:50,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:50:50,554 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:50:50,554 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:50:50,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-12-14 06:50:53,111 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:50:53,293 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:50:53,294 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-12-14 06:50:53,304 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/data/4e2bdb43e/8b242656a62f49abad5a0b21468c43d7/FLAG7c2e0693a [2022-12-14 06:50:53,315 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/data/4e2bdb43e/8b242656a62f49abad5a0b21468c43d7 [2022-12-14 06:50:53,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:50:53,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:50:53,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:50:53,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:50:53,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:50:53,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:53,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6ce8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53, skipping insertion in model container [2022-12-14 06:50:53,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:53,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:50:53,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:50:53,613 WARN L237 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-12-14 06:50:53,697 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:50:53,699 WARN L237 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-12-14 06:50:53,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:50:53,711 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:50:53,732 WARN L237 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-12-14 06:50:53,785 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:50:53,787 WARN L237 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-12-14 06:50:53,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:50:53,812 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:50:53,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53 WrapperNode [2022-12-14 06:50:53,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:50:53,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:50:53,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:50:53,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:50:53,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:53,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:53,908 INFO L138 Inliner]: procedures = 177, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-12-14 06:50:53,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:50:53,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:50:53,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:50:53,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:50:53,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:53,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:53,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:53,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:53,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:53,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:53,997 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:54,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:54,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:50:54,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:50:54,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:50:54,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:50:54,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (1/1) ... [2022-12-14 06:50:54,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:50:54,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:50:54,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:50:54,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:50:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:50:54,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 06:50:54,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 06:50:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:50:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 06:50:54,082 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 06:50:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 06:50:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:50:54,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 06:50:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:50:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 06:50:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 06:50:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:50:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:50:54,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:50:54,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:50:54,271 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:50:54,273 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:50:55,484 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:50:55,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:50:55,843 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-12-14 06:50:55,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:50:55 BoogieIcfgContainer [2022-12-14 06:50:55,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:50:55,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:50:55,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:50:55,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:50:55,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:50:53" (1/3) ... [2022-12-14 06:50:55,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eed2e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:50:55, skipping insertion in model container [2022-12-14 06:50:55,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:50:53" (2/3) ... [2022-12-14 06:50:55,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eed2e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:50:55, skipping insertion in model container [2022-12-14 06:50:55,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:50:55" (3/3) ... [2022-12-14 06:50:55,855 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-1.i [2022-12-14 06:50:55,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:50:55,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 06:50:55,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:50:55,932 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4cb45b6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:50:55,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 06:50:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 135 states have (on average 1.8148148148148149) internal successors, (245), 142 states have internal predecessors, (245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:50:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 06:50:55,944 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:55,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 06:50:55,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:50:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1932660624, now seen corresponding path program 1 times [2022-12-14 06:50:55,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:55,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653036009] [2022-12-14 06:50:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:55,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:56,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:56,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653036009] [2022-12-14 06:50:56,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 06:50:56,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370201806] [2022-12-14 06:50:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:56,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:50:56,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:50:56,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:50:56,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:50:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:56,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 06:50:56,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:50:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:50:56,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:50:56,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370201806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:56,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:56,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:50:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369363148] [2022-12-14 06:50:56,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:56,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 06:50:56,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:56,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 06:50:56,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:50:56,302 INFO L87 Difference]: Start difference. First operand has 151 states, 135 states have (on average 1.8148148148148149) internal successors, (245), 142 states have internal predecessors, (245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:50:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:50:57,656 INFO L93 Difference]: Finished difference Result 301 states and 538 transitions. [2022-12-14 06:50:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 06:50:57,661 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-12-14 06:50:57,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:50:57,667 INFO L225 Difference]: With dead ends: 301 [2022-12-14 06:50:57,667 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 06:50:57,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:50:57,672 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:50:57,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 06:50:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 06:50:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-12-14 06:50:57,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 141 states have internal predecessors, (161), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:50:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2022-12-14 06:50:57,704 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 6 [2022-12-14 06:50:57,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:50:57,704 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2022-12-14 06:50:57,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:50:57,705 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2022-12-14 06:50:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 06:50:57,706 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:50:57,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:50:57,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:50:57,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 06:50:57,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:50:57,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:50:57,909 INFO L85 PathProgramCache]: Analyzing trace with hash 366577228, now seen corresponding path program 1 times [2022-12-14 06:50:57,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:50:57,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843818819] [2022-12-14 06:50:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:57,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:50:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:57,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:50:57,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843818819] [2022-12-14 06:50:57,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 06:50:57,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964868278] [2022-12-14 06:50:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:50:57,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:50:57,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:50:57,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:50:57,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:50:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:50:58,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 06:50:58,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:50:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:50:58,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:50:58,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964868278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:50:58,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:50:58,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:50:58,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146181064] [2022-12-14 06:50:58,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:50:58,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:50:58,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:50:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:50:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:50:58,146 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:00,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:51:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:01,975 INFO L93 Difference]: Finished difference Result 342 states and 425 transitions. [2022-12-14 06:51:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:51:01,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 06:51:01,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:01,983 INFO L225 Difference]: With dead ends: 342 [2022-12-14 06:51:01,983 INFO L226 Difference]: Without dead ends: 290 [2022-12-14 06:51:01,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:01,985 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 149 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:01,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 351 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-14 06:51:01,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-12-14 06:51:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 151. [2022-12-14 06:51:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 142 states have internal predecessors, (162), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:51:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 184 transitions. [2022-12-14 06:51:02,012 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 184 transitions. Word has length 17 [2022-12-14 06:51:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:02,013 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 184 transitions. [2022-12-14 06:51:02,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 184 transitions. [2022-12-14 06:51:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 06:51:02,014 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:02,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:02,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 06:51:02,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 06:51:02,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:51:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:02,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1239149554, now seen corresponding path program 1 times [2022-12-14 06:51:02,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:02,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216736382] [2022-12-14 06:51:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:02,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:02,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:51:02,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614455753] [2022-12-14 06:51:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:02,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:51:02,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:51:02,420 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:51:02,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 06:51:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:03,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:51:03,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:51:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:03,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:51:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:03,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:03,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216736382] [2022-12-14 06:51:03,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:51:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614455753] [2022-12-14 06:51:03,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614455753] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:51:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1319272474] [2022-12-14 06:51:03,429 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 06:51:03,430 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:51:03,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:51:03,436 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:51:03,436 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:51:03,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,532 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 06:51:03,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 06:51:03,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,559 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 06:51:03,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 06:51:03,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 06:51:03,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,626 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 06:51:03,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 06:51:03,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 06:51:03,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,652 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:51:03,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-12-14 06:51:03,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 06:51:03,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 06:51:03,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:03,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 06:51:04,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-12-14 06:51:04,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 06:51:04,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 06:51:04,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 06:51:04,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 06:51:04,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:04,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-12-14 06:51:04,451 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:51:17,622 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 251 DAG size of output: 236 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:51:17,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1319272474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:17,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:51:17,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3] total 11 [2022-12-14 06:51:17,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209452161] [2022-12-14 06:51:17,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:17,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:17,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:17,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=69, Unknown=1, NotChecked=0, Total=132 [2022-12-14 06:51:17,627 INFO L87 Difference]: Start difference. First operand 151 states and 184 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:19,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:51:21,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:51:23,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:51:26,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:26,769 INFO L93 Difference]: Finished difference Result 313 states and 382 transitions. [2022-12-14 06:51:26,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:51:26,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-12-14 06:51:26,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:26,771 INFO L225 Difference]: With dead ends: 313 [2022-12-14 06:51:26,771 INFO L226 Difference]: Without dead ends: 164 [2022-12-14 06:51:26,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=62, Invalid=69, Unknown=1, NotChecked=0, Total=132 [2022-12-14 06:51:26,772 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:26,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 402 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-12-14 06:51:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-12-14 06:51:26,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-12-14 06:51:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 146 states have (on average 1.178082191780822) internal successors, (172), 152 states have internal predecessors, (172), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:51:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-12-14 06:51:26,795 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 61 [2022-12-14 06:51:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:26,795 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-12-14 06:51:26,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-12-14 06:51:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 06:51:26,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:26,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:26,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 06:51:26,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:51:26,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:51:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash -786088463, now seen corresponding path program 1 times [2022-12-14 06:51:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:27,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808171822] [2022-12-14 06:51:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:27,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:27,135 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:51:27,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651642366] [2022-12-14 06:51:27,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:27,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:51:27,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:51:27,136 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:51:27,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 06:51:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:27,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:51:27,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:51:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 06:51:27,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:51:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 06:51:27,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:27,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808171822] [2022-12-14 06:51:27,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:51:27,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651642366] [2022-12-14 06:51:27,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651642366] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:51:27,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646133513] [2022-12-14 06:51:27,945 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 06:51:27,945 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:51:27,946 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:51:27,946 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:51:27,946 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:51:28,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,035 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 06:51:28,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 06:51:28,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 06:51:28,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,079 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 06:51:28,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 06:51:28,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,115 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 06:51:28,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 06:51:28,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:51:28,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-12-14 06:51:28,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 06:51:28,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 06:51:28,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 06:51:28,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 06:51:28,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 06:51:28,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-12-14 06:51:28,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 06:51:28,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 06:51:28,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 06:51:28,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 06:51:28,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 06:51:28,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,807 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-12-14 06:51:28,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-12-14 06:51:28,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,874 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 06:51:28,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-12-14 06:51:28,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:28,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 06:51:28,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 06:51:29,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 06:51:29,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 06:51:29,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-12-14 06:51:29,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 06:51:29,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 06:51:29,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-12-14 06:51:29,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-12-14 06:51:29,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 06:51:29,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 06:51:29,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,655 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-12-14 06:51:29,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-12-14 06:51:29,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,711 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 06:51:29,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-12-14 06:51:29,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:51:29,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-12-14 06:51:29,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 06:51:30,024 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 253 for LOIs [2022-12-14 06:51:30,098 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:51:43,111 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 251 DAG size of output: 236 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:51:52,549 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 262 DAG size of output: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:52:04,646 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 284 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:52:20,978 WARN L233 SmtUtils]: Spent 10.17s on a formula simplification. DAG size of input: 284 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:52:22,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [646133513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:52:22,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:52:22,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4] total 17 [2022-12-14 06:52:22,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134037498] [2022-12-14 06:52:22,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:52:22,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:52:22,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:52:22,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:52:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=172, Unknown=9, NotChecked=0, Total=272 [2022-12-14 06:52:22,163 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:52:24,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:52:26,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:52:28,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:52:31,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:52:33,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:52:35,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:52:37,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:52:39,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:52:41,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:52:46,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 06:52:50,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 06:52:51,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:52:51,654 INFO L93 Difference]: Finished difference Result 315 states and 384 transitions. [2022-12-14 06:52:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 06:52:51,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2022-12-14 06:52:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:52:51,656 INFO L225 Difference]: With dead ends: 315 [2022-12-14 06:52:51,656 INFO L226 Difference]: Without dead ends: 166 [2022-12-14 06:52:51,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 52.1s TimeCoverageRelationStatistics Valid=91, Invalid=172, Unknown=9, NotChecked=0, Total=272 [2022-12-14 06:52:51,658 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:52:51,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 385 Invalid, 9 Unknown, 0 Unchecked, 29.4s Time] [2022-12-14 06:52:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-12-14 06:52:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-12-14 06:52:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 150 states have (on average 1.1733333333333333) internal successors, (176), 156 states have internal predecessors, (176), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 7 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 06:52:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2022-12-14 06:52:51,677 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 74 [2022-12-14 06:52:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:51,677 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2022-12-14 06:52:51,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:52:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2022-12-14 06:52:51,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 06:52:51,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:51,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:52:51,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 06:52:51,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:52:51,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:52:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash 27241029, now seen corresponding path program 1 times [2022-12-14 06:52:51,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:51,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957241559] [2022-12-14 06:52:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:51,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:52,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 06:52:52,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432224263] [2022-12-14 06:52:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:52,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:52:52,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:52:52,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:52:52,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 06:52:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:52,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:52:52,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:52:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 06:52:52,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:52:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 06:52:52,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:52,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957241559] [2022-12-14 06:52:52,806 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 06:52:52,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432224263] [2022-12-14 06:52:52,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432224263] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:52:52,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [958227291] [2022-12-14 06:52:52,810 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 06:52:52,810 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:52:52,811 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:52:52,811 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:52:52,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:52:52,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:52,885 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 06:52:52,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 06:52:52,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:52,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 06:52:52,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:52,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:52,938 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 06:52:52,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 06:52:52,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:52,949 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:52:52,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:52,962 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 06:52:52,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 06:52:52,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:52,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 06:52:52,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:52,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 06:52:52,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:52,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,019 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 06:52:53,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 06:52:53,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 06:52:53,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 06:52:53,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 06:52:53,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-12-14 06:52:53,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 06:52:53,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 06:52:53,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 06:52:53,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 06:52:53,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 06:52:53,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 06:52:53,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,503 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-12-14 06:52:53,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-12-14 06:52:53,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,549 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 06:52:53,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-12-14 06:52:53,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 06:52:53,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 06:52:53,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 06:52:53,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 06:52:53,728 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-12-14 06:52:53,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2022-12-14 06:52:53,748 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 06:52:53,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2022-12-14 06:52:53,768 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 06:52:53,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-12-14 06:52:53,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 06:52:53,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-14 06:52:53,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-14 06:52:53,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:53,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-12-14 06:52:53,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-12-14 06:52:53,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-12-14 06:52:54,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:52:54,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-12-14 06:52:54,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-12-14 06:52:54,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-12-14 06:52:56,105 INFO L217 Elim1Store]: Index analysis took 1769 ms [2022-12-14 06:53:02,211 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 109 DAG size of output: 31 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 06:53:02,211 INFO L321 Elim1Store]: treesize reduction 190, result has 18.1 percent of original size [2022-12-14 06:53:02,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 10752723 treesize of output 10752742 [2022-12-14 06:53:03,006 INFO L217 Elim1Store]: Index analysis took 611 ms [2022-12-14 06:53:03,472 INFO L321 Elim1Store]: treesize reduction 87, result has 5.4 percent of original size [2022-12-14 06:53:03,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 10752718 treesize of output 10752722 [2022-12-14 06:53:19,174 INFO L217 Elim1Store]: Index analysis took 402 ms [2022-12-14 06:54:03,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 06:54:03,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:54:03,620 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:54) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.pushContext(SimplifyDDA.java:736) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:389) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:648) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) ... 59 more [2022-12-14 06:54:03,629 INFO L158 Benchmark]: Toolchain (without parser) took 190310.65ms. Allocated memory was 134.2MB in the beginning and 7.2GB in the end (delta: 7.1GB). Free memory was 90.6MB in the beginning and 5.4GB in the end (delta: -5.3GB). Peak memory consumption was 6.2GB. Max. memory is 16.1GB. [2022-12-14 06:54:03,630 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory was 105.7MB in the beginning and 105.6MB in the end (delta: 141.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 06:54:03,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.41ms. Allocated memory is still 134.2MB. Free memory was 90.1MB in the beginning and 53.1MB in the end (delta: 37.0MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-12-14 06:54:03,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.03ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 53.1MB in the beginning and 134.0MB in the end (delta: -80.9MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2022-12-14 06:54:03,632 INFO L158 Benchmark]: Boogie Preprocessor took 103.88ms. Allocated memory is still 169.9MB. Free memory was 134.0MB in the beginning and 123.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 06:54:03,632 INFO L158 Benchmark]: RCFGBuilder took 1832.05ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 123.5MB in the beginning and 155.0MB in the end (delta: -31.5MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. [2022-12-14 06:54:03,633 INFO L158 Benchmark]: TraceAbstraction took 187779.52ms. Allocated memory was 205.5MB in the beginning and 7.2GB in the end (delta: 7.0GB). Free memory was 155.0MB in the beginning and 5.4GB in the end (delta: -5.2GB). Peak memory consumption was 6.2GB. Max. memory is 16.1GB. [2022-12-14 06:54:03,637 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory was 105.7MB in the beginning and 105.6MB in the end (delta: 141.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 494.41ms. Allocated memory is still 134.2MB. Free memory was 90.1MB in the beginning and 53.1MB in the end (delta: 37.0MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.03ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 53.1MB in the beginning and 134.0MB in the end (delta: -80.9MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.88ms. Allocated memory is still 169.9MB. Free memory was 134.0MB in the beginning and 123.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1832.05ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 123.5MB in the beginning and 155.0MB in the end (delta: -31.5MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. * TraceAbstraction took 187779.52ms. Allocated memory was 205.5MB in the beginning and 7.2GB in the end (delta: 7.0GB). Free memory was 155.0MB in the beginning and 5.4GB in the end (delta: -5.2GB). Peak memory consumption was 6.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 06:54:03,854 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-12-14 06:54:03,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh --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 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:54:05,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:54:05,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:54:05,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:54:05,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:54:05,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:54:05,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:54:05,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:54:05,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:54:05,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:54:05,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:54:05,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:54:05,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:54:05,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:54:05,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:54:05,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:54:05,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:54:05,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:54:05,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:54:05,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:54:05,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:54:05,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:54:05,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:54:05,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:54:05,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:54:05,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:54:05,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:54:05,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:54:05,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:54:05,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:54:05,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:54:05,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:54:05,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:54:05,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:54:05,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:54:05,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:54:05,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:54:05,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:54:05,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:54:05,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:54:05,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:54:05,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 06:54:05,654 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:54:05,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:54:05,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:54:05,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:54:05,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:54:05,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:54:05,655 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:54:05,655 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:54:05,655 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:54:05,656 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:54:05,656 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:54:05,656 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:54:05,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:54:05,657 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:54:05,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:54:05,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:54:05,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:54:05,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:54:05,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:54:05,658 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 06:54:05,658 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 06:54:05,658 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 06:54:05,658 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:54:05,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:54:05,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:54:05,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:54:05,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:54:05,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 06:54:05,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:54:05,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:54:05,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:54:05,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:54:05,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:54:05,660 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 06:54:05,660 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 06:54:05,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:54:05,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:54:05,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 06:54:05,661 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 [2022-12-14 06:54:05,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:54:05,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:54:05,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:54:05,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:54:05,898 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:54:05,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-12-14 06:54:08,491 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:54:08,744 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:54:08,744 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-12-14 06:54:08,758 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/data/f584cf89d/bd46530eb50f41b98d011f8b1a024ab5/FLAG5bff38d89 [2022-12-14 06:54:08,772 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/data/f584cf89d/bd46530eb50f41b98d011f8b1a024ab5 [2022-12-14 06:54:08,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:54:08,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:54:08,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:54:08,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:54:08,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:54:08,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:54:08" (1/1) ... [2022-12-14 06:54:08,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d671442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:08, skipping insertion in model container [2022-12-14 06:54:08,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:54:08" (1/1) ... [2022-12-14 06:54:08,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:54:08,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:54:09,143 WARN L237 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-12-14 06:54:09,262 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:54:09,265 WARN L237 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-12-14 06:54:09,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:54:09,290 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 06:54:09,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:54:09,324 WARN L237 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-12-14 06:54:09,396 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:54:09,398 WARN L237 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-12-14 06:54:09,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:54:09,405 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:54:09,427 WARN L237 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-12-14 06:54:09,477 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:54:09,478 WARN L237 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_cd7d6021-223b-44e3-ab54-5b4079ab74f3/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-12-14 06:54:09,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:54:09,510 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:54:09,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09 WrapperNode [2022-12-14 06:54:09,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:54:09,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:54:09,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:54:09,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:54:09,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,576 INFO L138 Inliner]: procedures = 180, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-12-14 06:54:09,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:54:09,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:54:09,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:54:09,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:54:09,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:54:09,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:54:09,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:54:09,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:54:09,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (1/1) ... [2022-12-14 06:54:09,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:54:09,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:54:09,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:54:09,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:54:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 06:54:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 06:54:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 06:54:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 06:54:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 06:54:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 06:54:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 06:54:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:54:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 06:54:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:54:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 06:54:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 06:54:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:54:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 06:54:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 06:54:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:54:09,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:54:09,890 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:54:09,892 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:54:18,718 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:54:18,724 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:54:18,725 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-12-14 06:54:18,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:54:18 BoogieIcfgContainer [2022-12-14 06:54:18,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:54:18,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:54:18,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:54:18,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:54:18,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:54:08" (1/3) ... [2022-12-14 06:54:18,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693d1a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:54:18, skipping insertion in model container [2022-12-14 06:54:18,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:54:09" (2/3) ... [2022-12-14 06:54:18,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693d1a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:54:18, skipping insertion in model container [2022-12-14 06:54:18,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:54:18" (3/3) ... [2022-12-14 06:54:18,733 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-1.i [2022-12-14 06:54:18,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:54:18,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 06:54:18,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:54:18,800 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a27f886, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:54:18,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 06:54:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:54:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 06:54:18,813 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:18,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:54:18,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:18,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:18,818 INFO L85 PathProgramCache]: Analyzing trace with hash 678032416, now seen corresponding path program 1 times [2022-12-14 06:54:18,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:18,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965875290] [2022-12-14 06:54:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:18,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:18,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:18,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:18,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 06:54:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:19,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 06:54:19,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:19,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:54:19,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:19,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:19,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965875290] [2022-12-14 06:54:19,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965875290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:19,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:54:19,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:54:19,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528832513] [2022-12-14 06:54:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:19,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 06:54:19,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 06:54:19,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:54:19,068 INFO L87 Difference]: Start difference. First operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:54:19,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:19,106 INFO L93 Difference]: Finished difference Result 506 states and 857 transitions. [2022-12-14 06:54:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 06:54:19,108 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 06:54:19,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:19,116 INFO L225 Difference]: With dead ends: 506 [2022-12-14 06:54:19,116 INFO L226 Difference]: Without dead ends: 250 [2022-12-14 06:54:19,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:54:19,121 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:19,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:54:19,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-12-14 06:54:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-12-14 06:54:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 241 states have internal predecessors, (309), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:54:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 331 transitions. [2022-12-14 06:54:19,170 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 331 transitions. Word has length 8 [2022-12-14 06:54:19,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:19,170 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 331 transitions. [2022-12-14 06:54:19,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:54:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 331 transitions. [2022-12-14 06:54:19,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 06:54:19,172 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:19,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:54:19,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:54:19,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:19,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:19,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:19,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1368100487, now seen corresponding path program 1 times [2022-12-14 06:54:19,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:19,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632795568] [2022-12-14 06:54:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:19,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:19,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:19,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:19,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 06:54:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:19,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 06:54:19,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:54:19,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:19,573 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:19,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632795568] [2022-12-14 06:54:19,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632795568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:19,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:54:19,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:54:19,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956017325] [2022-12-14 06:54:19,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:19,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:54:19,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:54:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:54:19,577 INFO L87 Difference]: Start difference. First operand 250 states and 331 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:54:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:19,788 INFO L93 Difference]: Finished difference Result 565 states and 756 transitions. [2022-12-14 06:54:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:54:19,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-12-14 06:54:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:19,795 INFO L225 Difference]: With dead ends: 565 [2022-12-14 06:54:19,796 INFO L226 Difference]: Without dead ends: 487 [2022-12-14 06:54:19,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:54:19,798 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 294 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:19,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 660 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:54:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-12-14 06:54:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 251. [2022-12-14 06:54:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 242 states have internal predecessors, (310), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:54:19,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 332 transitions. [2022-12-14 06:54:19,820 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 332 transitions. Word has length 42 [2022-12-14 06:54:19,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:19,821 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 332 transitions. [2022-12-14 06:54:19,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:54:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 332 transitions. [2022-12-14 06:54:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 06:54:19,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:19,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:54:19,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 06:54:20,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:20,026 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:20,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:20,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1909784615, now seen corresponding path program 1 times [2022-12-14 06:54:20,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:20,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693456404] [2022-12-14 06:54:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:20,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:20,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:20,030 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:20,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 06:54:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:21,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:54:21,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:54:21,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:21,733 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:21,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693456404] [2022-12-14 06:54:21,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693456404] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:21,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:54:21,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:54:21,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629280924] [2022-12-14 06:54:21,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:21,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:54:21,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:21,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:54:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:54:21,735 INFO L87 Difference]: Start difference. First operand 251 states and 332 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:54:21,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:21,840 INFO L93 Difference]: Finished difference Result 508 states and 673 transitions. [2022-12-14 06:54:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:54:21,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-12-14 06:54:21,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:21,842 INFO L225 Difference]: With dead ends: 508 [2022-12-14 06:54:21,842 INFO L226 Difference]: Without dead ends: 260 [2022-12-14 06:54:21,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:54:21,844 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 292 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:21,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 631 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:54:21,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-12-14 06:54:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2022-12-14 06:54:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 239 states have (on average 1.2761506276150627) internal successors, (305), 245 states have internal predecessors, (305), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:54:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 327 transitions. [2022-12-14 06:54:21,861 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 327 transitions. Word has length 140 [2022-12-14 06:54:21,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:21,862 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 327 transitions. [2022-12-14 06:54:21,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:54:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 327 transitions. [2022-12-14 06:54:21,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 06:54:21,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:21,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:54:21,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 06:54:22,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:22,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:22,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1562910771, now seen corresponding path program 1 times [2022-12-14 06:54:22,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:22,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639692666] [2022-12-14 06:54:22,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:22,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:22,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:22,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:22,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 06:54:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:23,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:54:23,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:54:24,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:24,137 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:24,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639692666] [2022-12-14 06:54:24,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639692666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:24,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:54:24,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:54:24,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290441794] [2022-12-14 06:54:24,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:24,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:54:24,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:24,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:54:24,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:54:24,139 INFO L87 Difference]: Start difference. First operand 254 states and 327 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:54:24,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:24,355 INFO L93 Difference]: Finished difference Result 546 states and 697 transitions. [2022-12-14 06:54:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:54:24,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-12-14 06:54:24,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:24,361 INFO L225 Difference]: With dead ends: 546 [2022-12-14 06:54:24,361 INFO L226 Difference]: Without dead ends: 295 [2022-12-14 06:54:24,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:54:24,363 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 11 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:24,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 623 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:54:24,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-12-14 06:54:24,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-12-14 06:54:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 280 states have (on average 1.25) internal successors, (350), 286 states have internal predecessors, (350), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 06:54:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 372 transitions. [2022-12-14 06:54:24,376 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 372 transitions. Word has length 140 [2022-12-14 06:54:24,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:24,377 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 372 transitions. [2022-12-14 06:54:24,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:54:24,377 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 372 transitions. [2022-12-14 06:54:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 06:54:24,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:24,379 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 06:54:24,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-14 06:54:24,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:24,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:24,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1120622574, now seen corresponding path program 1 times [2022-12-14 06:54:24,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:24,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671913886] [2022-12-14 06:54:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:24,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:24,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:24,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:24,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 06:54:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:26,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:54:26,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:54:26,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:26,092 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:26,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671913886] [2022-12-14 06:54:26,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671913886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:26,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:54:26,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:54:26,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398271664] [2022-12-14 06:54:26,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:26,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:54:26,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:26,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:54:26,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:54:26,095 INFO L87 Difference]: Start difference. First operand 295 states and 372 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:54:26,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:26,156 INFO L93 Difference]: Finished difference Result 549 states and 705 transitions. [2022-12-14 06:54:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:54:26,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 155 [2022-12-14 06:54:26,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:26,158 INFO L225 Difference]: With dead ends: 549 [2022-12-14 06:54:26,158 INFO L226 Difference]: Without dead ends: 298 [2022-12-14 06:54:26,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:54:26,159 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:26,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:54:26,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-12-14 06:54:26,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-12-14 06:54:26,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 282 states have (on average 1.25177304964539) internal successors, (353), 289 states have internal predecessors, (353), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-12-14 06:54:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 377 transitions. [2022-12-14 06:54:26,178 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 377 transitions. Word has length 155 [2022-12-14 06:54:26,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:26,179 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 377 transitions. [2022-12-14 06:54:26,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:54:26,179 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 377 transitions. [2022-12-14 06:54:26,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-14 06:54:26,181 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:26,181 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 06:54:26,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 06:54:26,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:26,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash -852886192, now seen corresponding path program 1 times [2022-12-14 06:54:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:26,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909025562] [2022-12-14 06:54:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:26,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:26,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:26,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 06:54:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:28,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:54:28,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 06:54:28,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:54:28,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 06:54:28,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:28,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909025562] [2022-12-14 06:54:28,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909025562] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:54:28,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1277512066] [2022-12-14 06:54:28,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:28,342 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:54:28,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:54:28,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:54:28,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-12-14 06:54:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:29,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:54:29,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 06:54:29,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:29,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1277512066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:29,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:54:29,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 06:54:29,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781840163] [2022-12-14 06:54:29,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:29,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:54:29,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:54:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:54:29,707 INFO L87 Difference]: Start difference. First operand 298 states and 377 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 06:54:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:29,797 INFO L93 Difference]: Finished difference Result 573 states and 737 transitions. [2022-12-14 06:54:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:54:29,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2022-12-14 06:54:29,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:29,800 INFO L225 Difference]: With dead ends: 573 [2022-12-14 06:54:29,800 INFO L226 Difference]: Without dead ends: 319 [2022-12-14 06:54:29,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:54:29,801 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 10 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:29,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 585 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:54:29,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-12-14 06:54:29,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318. [2022-12-14 06:54:29,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 302 states have (on average 1.2350993377483444) internal successors, (373), 309 states have internal predecessors, (373), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-12-14 06:54:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 397 transitions. [2022-12-14 06:54:29,809 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 397 transitions. Word has length 157 [2022-12-14 06:54:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:29,809 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 397 transitions. [2022-12-14 06:54:29,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 06:54:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 397 transitions. [2022-12-14 06:54:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-14 06:54:29,810 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:29,810 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 06:54:29,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 06:54:30,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2022-12-14 06:54:30,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 06:54:30,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:30,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash 622348492, now seen corresponding path program 1 times [2022-12-14 06:54:30,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:30,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48294543] [2022-12-14 06:54:30,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:30,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:30,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:30,219 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:30,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 06:54:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:31,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:54:31,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 06:54:31,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:54:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 06:54:31,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:31,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48294543] [2022-12-14 06:54:31,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48294543] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:54:31,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [946595083] [2022-12-14 06:54:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:31,716 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:54:31,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:54:31,717 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:54:31,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 06:54:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:33,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:54:33,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 06:54:33,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:33,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [946595083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:33,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:54:33,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 06:54:33,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121160856] [2022-12-14 06:54:33,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:33,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:54:33,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:54:33,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:54:33,481 INFO L87 Difference]: Start difference. First operand 318 states and 397 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 06:54:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:34,099 INFO L93 Difference]: Finished difference Result 826 states and 1048 transitions. [2022-12-14 06:54:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:54:34,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2022-12-14 06:54:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:34,101 INFO L225 Difference]: With dead ends: 826 [2022-12-14 06:54:34,101 INFO L226 Difference]: Without dead ends: 552 [2022-12-14 06:54:34,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:54:34,102 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 227 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:34,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 724 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 06:54:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-12-14 06:54:34,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 550. [2022-12-14 06:54:34,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 525 states have (on average 1.2419047619047618) internal successors, (652), 537 states have internal predecessors, (652), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2022-12-14 06:54:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 696 transitions. [2022-12-14 06:54:34,118 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 696 transitions. Word has length 157 [2022-12-14 06:54:34,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:34,118 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 696 transitions. [2022-12-14 06:54:34,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 06:54:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 696 transitions. [2022-12-14 06:54:34,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-14 06:54:34,120 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:34,120 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 06:54:34,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 06:54:34,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-12-14 06:54:34,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 06:54:34,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:34,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:34,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1130175954, now seen corresponding path program 1 times [2022-12-14 06:54:34,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:34,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872484767] [2022-12-14 06:54:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:34,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:34,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:34,523 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:34,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 06:54:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:35,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:54:35,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 06:54:35,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:54:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 06:54:35,979 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:35,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872484767] [2022-12-14 06:54:35,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872484767] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:54:35,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1992202518] [2022-12-14 06:54:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:35,979 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:54:35,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:54:35,980 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:54:35,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-12-14 06:54:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:37,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:54:37,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 06:54:38,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:38,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1992202518] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:38,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:54:38,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 06:54:38,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108364206] [2022-12-14 06:54:38,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:38,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:54:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:54:38,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:54:38,188 INFO L87 Difference]: Start difference. First operand 550 states and 696 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 06:54:38,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:38,630 INFO L93 Difference]: Finished difference Result 953 states and 1209 transitions. [2022-12-14 06:54:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:54:38,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 164 [2022-12-14 06:54:38,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:38,636 INFO L225 Difference]: With dead ends: 953 [2022-12-14 06:54:38,636 INFO L226 Difference]: Without dead ends: 688 [2022-12-14 06:54:38,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:54:38,637 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 90 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:38,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 673 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:54:38,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-12-14 06:54:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 686. [2022-12-14 06:54:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 658 states have (on average 1.2446808510638299) internal successors, (819), 670 states have internal predecessors, (819), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-12-14 06:54:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 870 transitions. [2022-12-14 06:54:38,655 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 870 transitions. Word has length 164 [2022-12-14 06:54:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:38,656 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 870 transitions. [2022-12-14 06:54:38,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 06:54:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 870 transitions. [2022-12-14 06:54:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 06:54:38,657 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:38,657 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:54:38,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 06:54:38,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2022-12-14 06:54:39,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 06:54:39,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:39,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1194831576, now seen corresponding path program 1 times [2022-12-14 06:54:39,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:39,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166779023] [2022-12-14 06:54:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:39,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:39,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:39,066 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:39,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 06:54:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:40,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:54:40,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 06:54:40,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:54:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 06:54:40,611 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:40,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166779023] [2022-12-14 06:54:40,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166779023] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:54:40,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1709445902] [2022-12-14 06:54:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:40,611 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:54:40,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:54:40,612 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:54:40,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-12-14 06:54:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:42,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:54:42,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 06:54:42,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:42,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1709445902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:42,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:54:42,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 06:54:42,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640470164] [2022-12-14 06:54:42,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:42,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:54:42,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:54:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 06:54:42,529 INFO L87 Difference]: Start difference. First operand 686 states and 870 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 06:54:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:42,641 INFO L93 Difference]: Finished difference Result 883 states and 1148 transitions. [2022-12-14 06:54:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:54:42,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 174 [2022-12-14 06:54:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:42,643 INFO L225 Difference]: With dead ends: 883 [2022-12-14 06:54:42,643 INFO L226 Difference]: Without dead ends: 720 [2022-12-14 06:54:42,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:54:42,644 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 77 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:42,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 805 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:54:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-12-14 06:54:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 713. [2022-12-14 06:54:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 685 states have (on average 1.2131386861313869) internal successors, (831), 697 states have internal predecessors, (831), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-12-14 06:54:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 882 transitions. [2022-12-14 06:54:42,663 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 882 transitions. Word has length 174 [2022-12-14 06:54:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:42,663 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 882 transitions. [2022-12-14 06:54:42,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 06:54:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 882 transitions. [2022-12-14 06:54:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 06:54:42,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:42,665 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:54:42,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2022-12-14 06:54:42,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 06:54:43,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:43,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:43,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1105991014, now seen corresponding path program 1 times [2022-12-14 06:54:43,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:43,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879738478] [2022-12-14 06:54:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:43,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:43,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:43,072 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:43,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 06:54:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:44,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:54:44,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 06:54:44,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:54:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 06:54:44,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:44,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879738478] [2022-12-14 06:54:44,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879738478] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:54:44,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [33564235] [2022-12-14 06:54:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:44,567 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:54:44,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:54:44,567 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:54:44,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-12-14 06:54:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:46,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:54:46,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 06:54:46,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:46,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [33564235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:46,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:54:46,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 06:54:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462460537] [2022-12-14 06:54:46,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:46,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:54:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:46,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:54:46,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 06:54:46,443 INFO L87 Difference]: Start difference. First operand 713 states and 882 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 06:54:46,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:46,535 INFO L93 Difference]: Finished difference Result 1288 states and 1608 transitions. [2022-12-14 06:54:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:54:46,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 174 [2022-12-14 06:54:46,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:46,537 INFO L225 Difference]: With dead ends: 1288 [2022-12-14 06:54:46,537 INFO L226 Difference]: Without dead ends: 665 [2022-12-14 06:54:46,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:54:46,538 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 276 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:46,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 869 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:54:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-12-14 06:54:46,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 662. [2022-12-14 06:54:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 634 states have (on average 1.1782334384858044) internal successors, (747), 646 states have internal predecessors, (747), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-12-14 06:54:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 798 transitions. [2022-12-14 06:54:46,565 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 798 transitions. Word has length 174 [2022-12-14 06:54:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:46,565 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 798 transitions. [2022-12-14 06:54:46,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 06:54:46,565 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 798 transitions. [2022-12-14 06:54:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 06:54:46,566 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:46,566 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:54:46,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-12-14 06:54:46,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-14 06:54:46,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:46,968 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:46,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:46,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1358232908, now seen corresponding path program 1 times [2022-12-14 06:54:46,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:54:46,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021527962] [2022-12-14 06:54:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:46,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:54:46,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:54:46,975 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:54:46,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 06:54:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:48,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:54:48,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 06:54:48,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:54:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 06:54:48,504 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:54:48,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021527962] [2022-12-14 06:54:48,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021527962] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:54:48,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1828119528] [2022-12-14 06:54:48,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:48,504 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:54:48,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:54:48,505 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:54:48,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-12-14 06:54:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:50,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:54:50,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:54:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 06:54:50,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:54:50,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1828119528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:50,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:54:50,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 06:54:50,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649051137] [2022-12-14 06:54:50,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:54:50,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:54:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:54:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 06:54:50,316 INFO L87 Difference]: Start difference. First operand 662 states and 798 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 06:54:52,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:54:57,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 06:55:03,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:55:03,070 INFO L93 Difference]: Finished difference Result 1448 states and 1752 transitions. [2022-12-14 06:55:03,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:55:03,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 174 [2022-12-14 06:55:03,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:55:03,075 INFO L225 Difference]: With dead ends: 1448 [2022-12-14 06:55:03,076 INFO L226 Difference]: Without dead ends: 912 [2022-12-14 06:55:03,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:55:03,077 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 512 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:55:03,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 609 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 144 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2022-12-14 06:55:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-12-14 06:55:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 551. [2022-12-14 06:55:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 528 states have (on average 1.1742424242424243) internal successors, (620), 535 states have internal predecessors, (620), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-12-14 06:55:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 661 transitions. [2022-12-14 06:55:03,103 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 661 transitions. Word has length 174 [2022-12-14 06:55:03,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:55:03,103 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 661 transitions. [2022-12-14 06:55:03,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 06:55:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 661 transitions. [2022-12-14 06:55:03,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-12-14 06:55:03,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:55:03,104 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:55:03,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-14 06:55:03,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2022-12-14 06:55:03,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 06:55:03,506 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:55:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:55:03,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1943774894, now seen corresponding path program 1 times [2022-12-14 06:55:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:55:03,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160008101] [2022-12-14 06:55:03,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:55:03,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:55:03,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:55:03,510 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:55:03,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 06:55:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:55:04,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:55:04,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 06:55:04,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:55:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 06:55:04,916 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:55:04,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160008101] [2022-12-14 06:55:04,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160008101] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:55:04,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1186597483] [2022-12-14 06:55:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:55:04,917 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:55:04,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:55:04,917 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:55:04,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-12-14 06:55:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:55:06,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:55:06,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 06:55:06,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:55:06,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1186597483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:55:06,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 06:55:06,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 06:55:06,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801572244] [2022-12-14 06:55:06,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:55:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:55:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:55:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:55:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 06:55:06,642 INFO L87 Difference]: Start difference. First operand 551 states and 661 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 06:55:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:55:06,720 INFO L93 Difference]: Finished difference Result 629 states and 761 transitions. [2022-12-14 06:55:06,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:55:06,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2022-12-14 06:55:06,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:55:06,722 INFO L225 Difference]: With dead ends: 629 [2022-12-14 06:55:06,722 INFO L226 Difference]: Without dead ends: 543 [2022-12-14 06:55:06,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:55:06,722 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 79 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:55:06,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 766 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:55:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-12-14 06:55:06,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 539. [2022-12-14 06:55:06,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 516 states have (on average 1.1647286821705427) internal successors, (601), 523 states have internal predecessors, (601), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-12-14 06:55:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 642 transitions. [2022-12-14 06:55:06,739 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 642 transitions. Word has length 181 [2022-12-14 06:55:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:55:06,740 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 642 transitions. [2022-12-14 06:55:06,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 06:55:06,740 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 642 transitions. [2022-12-14 06:55:06,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-12-14 06:55:06,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:55:06,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:55:06,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-12-14 06:55:06,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-12-14 06:55:07,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 06:55:07,142 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:55:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:55:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash -34971296, now seen corresponding path program 1 times [2022-12-14 06:55:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:55:07,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140221641] [2022-12-14 06:55:07,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:55:07,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:55:07,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:55:07,148 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:55:07,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-14 06:55:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:55:08,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:55:08,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 06:55:08,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:55:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 06:55:08,732 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:55:08,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140221641] [2022-12-14 06:55:08,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140221641] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:55:08,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2123469462] [2022-12-14 06:55:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:55:08,732 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:55:08,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:55:08,733 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:55:08,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 06:55:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:55:11,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:55:11,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 06:55:11,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:55:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 06:55:11,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2123469462] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:55:11,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375377725] [2022-12-14 06:55:11,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:55:11,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:55:11,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:55:11,542 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:55:11,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 06:55:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:55:12,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:55:12,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 06:55:13,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:55:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 06:55:13,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375377725] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:55:13,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:55:13,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2022-12-14 06:55:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380519180] [2022-12-14 06:55:13,536 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:55:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 06:55:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:55:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 06:55:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-14 06:55:13,537 INFO L87 Difference]: Start difference. First operand 539 states and 642 transitions. Second operand has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 06:55:14,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:55:14,764 INFO L93 Difference]: Finished difference Result 1835 states and 2262 transitions. [2022-12-14 06:55:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:55:14,765 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 181 [2022-12-14 06:55:14,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:55:14,769 INFO L225 Difference]: With dead ends: 1835 [2022-12-14 06:55:14,769 INFO L226 Difference]: Without dead ends: 1343 [2022-12-14 06:55:14,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-12-14 06:55:14,770 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1313 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:55:14,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 2274 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 06:55:14,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2022-12-14 06:55:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1205. [2022-12-14 06:55:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1160 states have (on average 1.1741379310344828) internal successors, (1362), 1167 states have internal predecessors, (1362), 39 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (53), 35 states have call predecessors, (53), 39 states have call successors, (53) [2022-12-14 06:55:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1454 transitions. [2022-12-14 06:55:14,823 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1454 transitions. Word has length 181 [2022-12-14 06:55:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:55:14,823 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1454 transitions. [2022-12-14 06:55:14,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 06:55:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1454 transitions. [2022-12-14 06:55:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-12-14 06:55:14,827 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:55:14,827 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:55:14,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-12-14 06:55:15,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-14 06:55:15,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-14 06:55:15,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:55:15,429 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:55:15,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:55:15,431 INFO L85 PathProgramCache]: Analyzing trace with hash -708936254, now seen corresponding path program 1 times [2022-12-14 06:55:15,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:55:15,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572822938] [2022-12-14 06:55:15,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:55:15,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:55:15,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:55:15,436 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:55:15,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-14 06:55:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:55:24,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 06:55:24,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-12-14 06:55:24,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:55:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-12-14 06:55:24,560 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:55:24,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572822938] [2022-12-14 06:55:24,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572822938] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:55:24,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [434246206] [2022-12-14 06:55:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:55:24,560 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:55:24,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:55:24,561 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:55:24,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 06:55:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:55:33,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 06:55:33,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-12-14 06:55:33,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:55:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-12-14 06:55:33,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [434246206] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:55:33,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900093787] [2022-12-14 06:55:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:55:33,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:55:33,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:55:33,794 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:55:33,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-14 06:55:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:55:42,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 06:55:42,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-12-14 06:55:42,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:55:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-12-14 06:55:42,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900093787] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:55:42,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:55:42,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2022-12-14 06:55:42,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536947908] [2022-12-14 06:55:42,849 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:55:42,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 06:55:42,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:55:42,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 06:55:42,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-12-14 06:55:42,851 INFO L87 Difference]: Start difference. First operand 1205 states and 1454 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 06:55:43,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:55:43,960 INFO L93 Difference]: Finished difference Result 2389 states and 3017 transitions. [2022-12-14 06:55:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 06:55:43,961 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 483 [2022-12-14 06:55:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:55:43,964 INFO L225 Difference]: With dead ends: 2389 [2022-12-14 06:55:43,964 INFO L226 Difference]: Without dead ends: 1225 [2022-12-14 06:55:43,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2874 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 06:55:43,966 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 40 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:55:43,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2548 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:55:43,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-12-14 06:55:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1217. [2022-12-14 06:55:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1172 states have (on average 1.1757679180887373) internal successors, (1378), 1179 states have internal predecessors, (1378), 39 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (53), 35 states have call predecessors, (53), 39 states have call successors, (53) [2022-12-14 06:55:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1470 transitions. [2022-12-14 06:55:44,050 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1470 transitions. Word has length 483 [2022-12-14 06:55:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:55:44,050 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1470 transitions. [2022-12-14 06:55:44,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 06:55:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1470 transitions. [2022-12-14 06:55:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-12-14 06:55:44,055 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:55:44,056 INFO L195 NwaCegarLoop]: trace histogram [36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:55:44,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-14 06:55:44,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-12-14 06:55:44,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2022-12-14 06:55:44,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 06:55:44,658 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:55:44,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:55:44,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1754575422, now seen corresponding path program 2 times [2022-12-14 06:55:44,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:55:44,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767828792] [2022-12-14 06:55:44,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:55:44,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:55:44,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:55:44,669 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:55:44,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-14 06:55:54,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 06:55:54,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:55:54,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 06:55:54,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-14 06:55:54,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:55:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-12-14 06:55:55,370 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:55:55,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767828792] [2022-12-14 06:55:55,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767828792] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:55:55,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1478467280] [2022-12-14 06:55:55,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:55:55,370 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:55:55,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:55:55,371 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:55:55,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-12-14 06:56:07,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 06:56:07,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:56:07,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 06:56:07,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:56:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-14 06:56:07,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:56:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-12-14 06:56:07,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1478467280] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:56:07,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231284239] [2022-12-14 06:56:07,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:56:07,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:56:07,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:56:07,943 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:56:07,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-14 06:56:16,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 06:56:16,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:56:17,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 06:56:17,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:56:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-12-14 06:56:17,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:56:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-12-14 06:56:18,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231284239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:56:18,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:56:18,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2022-12-14 06:56:18,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722539128] [2022-12-14 06:56:18,999 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:56:19,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 06:56:19,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:56:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 06:56:19,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 06:56:19,001 INFO L87 Difference]: Start difference. First operand 1217 states and 1470 transitions. Second operand has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 06:56:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:56:34,453 INFO L93 Difference]: Finished difference Result 4750 states and 6231 transitions. [2022-12-14 06:56:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-14 06:56:34,454 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 507 [2022-12-14 06:56:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:56:34,461 INFO L225 Difference]: With dead ends: 4750 [2022-12-14 06:56:34,461 INFO L226 Difference]: Without dead ends: 3576 [2022-12-14 06:56:34,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3075 GetRequests, 3006 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 06:56:34,465 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 4440 mSDsluCounter, 20591 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 1448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4612 SdHoareTripleChecker+Valid, 21822 SdHoareTripleChecker+Invalid, 6571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1448 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:56:34,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4612 Valid, 21822 Invalid, 6571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1448 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-12-14 06:56:34,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2022-12-14 06:56:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3218. [2022-12-14 06:56:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3113 states have (on average 1.1692900738837135) internal successors, (3640), 3120 states have internal predecessors, (3640), 99 states have call successors, (99), 3 states have call predecessors, (99), 4 states have return successors, (137), 95 states have call predecessors, (137), 99 states have call successors, (137) [2022-12-14 06:56:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 3876 transitions. [2022-12-14 06:56:34,646 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 3876 transitions. Word has length 507 [2022-12-14 06:56:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:56:34,647 INFO L495 AbstractCegarLoop]: Abstraction has 3218 states and 3876 transitions. [2022-12-14 06:56:34,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 06:56:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 3876 transitions. [2022-12-14 06:56:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2022-12-14 06:56:34,657 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:56:34,658 INFO L195 NwaCegarLoop]: trace histogram [66, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:56:34,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-12-14 06:56:34,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-12-14 06:56:35,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-14 06:56:35,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:56:35,259 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:56:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:56:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1181150768, now seen corresponding path program 3 times [2022-12-14 06:56:35,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:56:35,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457339553] [2022-12-14 06:56:35,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:56:35,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:56:35,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:56:35,267 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:56:35,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd7d6021-223b-44e3-ab54-5b4079ab74f3/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process