./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:38:15,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:38:15,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:38:15,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:38:15,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:38:15,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:38:15,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:38:15,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:38:15,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:38:15,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:38:15,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:38:15,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:38:15,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:38:15,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:38:15,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:38:15,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:38:15,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:38:15,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:38:15,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:38:15,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:38:15,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:38:15,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:38:15,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:38:15,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:38:15,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:38:15,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:38:15,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:38:15,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:38:15,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:38:15,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:38:15,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:38:15,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:38:15,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:38:15,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:38:15,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:38:15,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:38:15,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:38:15,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:38:15,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:38:15,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:38:15,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:38:15,373 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:38:15,424 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:38:15,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:38:15,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:38:15,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:38:15,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:38:15,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:38:15,429 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:38:15,429 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:38:15,430 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:38:15,430 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:38:15,432 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:38:15,432 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:38:15,432 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:38:15,433 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:38:15,433 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:38:15,434 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:38:15,434 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:38:15,434 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:38:15,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:38:15,436 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:38:15,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:38:15,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:38:15,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:38:15,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:38:15,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:38:15,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:38:15,438 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:38:15,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:38:15,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:38:15,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:38:15,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:38:15,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:38:15,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:38:15,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:38:15,441 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:38:15,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:38:15,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:38:15,443 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:38:15,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:38:15,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:38:15,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:38:15,444 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_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2022-11-19 06:38:15,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:38:15,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:38:15,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:38:15,887 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:38:15,888 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:38:15,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2022-11-19 06:38:15,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/data/4a05cf92a/b34fba8d1c964c599c63cb688a7bb39f/FLAG4ec48af01 [2022-11-19 06:38:16,875 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:38:16,876 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2022-11-19 06:38:16,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/data/4a05cf92a/b34fba8d1c964c599c63cb688a7bb39f/FLAG4ec48af01 [2022-11-19 06:38:16,967 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/data/4a05cf92a/b34fba8d1c964c599c63cb688a7bb39f [2022-11-19 06:38:16,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:38:16,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:38:16,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:38:16,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:38:16,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:38:16,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:38:16" (1/1) ... [2022-11-19 06:38:16,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4cc97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:16, skipping insertion in model container [2022-11-19 06:38:16,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:38:16" (1/1) ... [2022-11-19 06:38:16,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:38:17,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:38:17,813 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2022-11-19 06:38:18,066 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2022-11-19 06:38:18,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:38:18,090 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:38:18,123 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2022-11-19 06:38:18,288 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2022-11-19 06:38:18,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:38:18,377 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:38:18,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18 WrapperNode [2022-11-19 06:38:18,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:38:18,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:38:18,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:38:18,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:38:18,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,651 INFO L138 Inliner]: procedures = 177, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3015 [2022-11-19 06:38:18,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:38:18,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:38:18,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:38:18,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:38:18,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,912 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:38:18,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:38:18,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:38:18,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:38:18,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (1/1) ... [2022-11-19 06:38:18,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:38:18,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:19,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:38:19,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:38:19,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:38:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:38:19,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:38:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:38:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:38:19,053 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:38:19,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:38:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:38:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:38:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:38:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 06:38:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:38:19,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:38:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:38:19,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:38:19,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:38:19,388 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:38:19,390 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:38:22,899 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:38:23,590 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:38:23,591 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 06:38:23,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:38:23 BoogieIcfgContainer [2022-11-19 06:38:23,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:38:23,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:38:23,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:38:23,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:38:23,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:38:16" (1/3) ... [2022-11-19 06:38:23,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c41448a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:38:23, skipping insertion in model container [2022-11-19 06:38:23,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:18" (2/3) ... [2022-11-19 06:38:23,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c41448a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:38:23, skipping insertion in model container [2022-11-19 06:38:23,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:38:23" (3/3) ... [2022-11-19 06:38:23,608 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-2.i [2022-11-19 06:38:23,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:38:23,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 06:38:23,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:38:23,769 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;@60b9e62a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:38:23,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 06:38:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 1113 states, 605 states have (on average 1.9636363636363636) internal successors, (1188), 1107 states have internal predecessors, (1188), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:38:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:38:23,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:23,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:23,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:23,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:23,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1698259018, now seen corresponding path program 1 times [2022-11-19 06:38:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:23,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949518453] [2022-11-19 06:38:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:23,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:24,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949518453] [2022-11-19 06:38:24,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949518453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:24,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:24,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:38:24,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400497272] [2022-11-19 06:38:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:24,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:38:24,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:38:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:38:24,110 INFO L87 Difference]: Start difference. First operand has 1113 states, 605 states have (on average 1.9636363636363636) internal successors, (1188), 1107 states have internal predecessors, (1188), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) 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) [2022-11-19 06:38:25,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:25,448 INFO L93 Difference]: Finished difference Result 2225 states and 4887 transitions. [2022-11-19 06:38:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:38:25,459 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 [2022-11-19 06:38:25,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:25,501 INFO L225 Difference]: With dead ends: 2225 [2022-11-19 06:38:25,502 INFO L226 Difference]: Without dead ends: 1097 [2022-11-19 06:38:25,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:38:25,536 INFO L413 NwaCegarLoop]: 2112 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:25,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2112 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 06:38:25,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-11-19 06:38:26,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2022-11-19 06:38:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 590 states have (on average 1.8745762711864407) internal successors, (1106), 1091 states have internal predecessors, (1106), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:38:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 2112 transitions. [2022-11-19 06:38:26,124 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 2112 transitions. Word has length 8 [2022-11-19 06:38:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:26,125 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 2112 transitions. [2022-11-19 06:38:26,125 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) [2022-11-19 06:38:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 2112 transitions. [2022-11-19 06:38:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 06:38:26,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:26,128 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] [2022-11-19 06:38:26,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:38:26,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:26,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:26,129 INFO L85 PathProgramCache]: Analyzing trace with hash -938844990, now seen corresponding path program 1 times [2022-11-19 06:38:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:26,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155938038] [2022-11-19 06:38:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:26,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:26,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:26,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155938038] [2022-11-19 06:38:26,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155938038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:26,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:26,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:38:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699796583] [2022-11-19 06:38:26,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:26,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:38:26,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:26,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:38:26,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:38:26,569 INFO L87 Difference]: Start difference. First operand 1097 states and 2112 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:29,490 INFO L93 Difference]: Finished difference Result 3192 states and 6222 transitions. [2022-11-19 06:38:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:38:29,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-19 06:38:29,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:29,514 INFO L225 Difference]: With dead ends: 3192 [2022-11-19 06:38:29,514 INFO L226 Difference]: Without dead ends: 2148 [2022-11-19 06:38:29,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:38:29,523 INFO L413 NwaCegarLoop]: 2589 mSDtfsCounter, 1056 mSDsluCounter, 4162 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 6751 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:29,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 6751 Invalid, 585 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 06:38:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2022-11-19 06:38:30,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1099. [2022-11-19 06:38:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 592 states have (on average 1.8716216216216217) internal successors, (1108), 1093 states have internal predecessors, (1108), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:38:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 2114 transitions. [2022-11-19 06:38:30,172 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 2114 transitions. Word has length 20 [2022-11-19 06:38:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:30,173 INFO L495 AbstractCegarLoop]: Abstraction has 1099 states and 2114 transitions. [2022-11-19 06:38:30,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 2114 transitions. [2022-11-19 06:38:30,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 06:38:30,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:30,177 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:30,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:38:30,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:30,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:30,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1151753055, now seen corresponding path program 1 times [2022-11-19 06:38:30,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:30,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791801650] [2022-11-19 06:38:30,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:30,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:30,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:38:30,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775392653] [2022-11-19 06:38:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:30,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:30,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:30,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:30,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:38:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:31,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:38:31,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:31,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:38:31,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:31,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791801650] [2022-11-19 06:38:31,529 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:38:31,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775392653] [2022-11-19 06:38:31,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775392653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:31,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:31,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:38:31,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40246144] [2022-11-19 06:38:31,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:31,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:31,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:31,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:31,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:31,532 INFO L87 Difference]: Start difference. First operand 1099 states and 2114 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:33,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:33,813 INFO L93 Difference]: Finished difference Result 3230 states and 6264 transitions. [2022-11-19 06:38:33,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:33,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-11-19 06:38:33,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:33,840 INFO L225 Difference]: With dead ends: 3230 [2022-11-19 06:38:33,840 INFO L226 Difference]: Without dead ends: 2134 [2022-11-19 06:38:33,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:33,849 INFO L413 NwaCegarLoop]: 2613 mSDtfsCounter, 1033 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:33,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 4693 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 06:38:33,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2022-11-19 06:38:34,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 2132. [2022-11-19 06:38:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1125 states have (on average 1.9057777777777778) internal successors, (2144), 2126 states have internal predecessors, (2144), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2022-11-19 06:38:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 4150 transitions. [2022-11-19 06:38:34,297 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 4150 transitions. Word has length 44 [2022-11-19 06:38:34,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:34,297 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 4150 transitions. [2022-11-19 06:38:34,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 4150 transitions. [2022-11-19 06:38:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 06:38:34,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:34,300 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] [2022-11-19 06:38:34,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:34,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-19 06:38:34,512 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:34,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:34,513 INFO L85 PathProgramCache]: Analyzing trace with hash 357634385, now seen corresponding path program 1 times [2022-11-19 06:38:34,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:34,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040746354] [2022-11-19 06:38:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:34,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:34,625 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:38:34,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991545331] [2022-11-19 06:38:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:34,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:34,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:34,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:34,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:38:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:35,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:38:35,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:38:35,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:38:35,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:35,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040746354] [2022-11-19 06:38:35,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:38:35,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991545331] [2022-11-19 06:38:35,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991545331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:35,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:35,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:38:35,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913209502] [2022-11-19 06:38:35,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:35,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:38:35,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:35,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:38:35,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:38:35,514 INFO L87 Difference]: Start difference. First operand 2132 states and 4150 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-11-19 06:38:37,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:38:39,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:39,098 INFO L93 Difference]: Finished difference Result 3228 states and 6261 transitions. [2022-11-19 06:38:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:38:39,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 57 [2022-11-19 06:38:39,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:39,108 INFO L225 Difference]: With dead ends: 3228 [2022-11-19 06:38:39,109 INFO L226 Difference]: Without dead ends: 1112 [2022-11-19 06:38:39,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:38:39,123 INFO L413 NwaCegarLoop]: 2087 mSDtfsCounter, 2143 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:39,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 3123 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-19 06:38:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-11-19 06:38:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1112. [2022-11-19 06:38:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 605 states have (on average 1.8512396694214877) internal successors, (1120), 1106 states have internal predecessors, (1120), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:38:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 2126 transitions. [2022-11-19 06:38:39,410 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 2126 transitions. Word has length 57 [2022-11-19 06:38:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:39,411 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 2126 transitions. [2022-11-19 06:38:39,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-11-19 06:38:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 2126 transitions. [2022-11-19 06:38:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 06:38:39,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:39,415 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] [2022-11-19 06:38:39,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:39,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:39,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:39,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1573580188, now seen corresponding path program 1 times [2022-11-19 06:38:39,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:39,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186540059] [2022-11-19 06:38:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:39,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:39,729 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:38:39,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495309743] [2022-11-19 06:38:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:39,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:39,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:39,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:39,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:39:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:16,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:39:16,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:16,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:39:16,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:39:16,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186540059] [2022-11-19 06:39:16,251 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:39:16,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495309743] [2022-11-19 06:39:16,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495309743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:16,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:16,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:39:16,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909029462] [2022-11-19 06:39:16,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:16,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:39:16,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:39:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:39:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:39:16,254 INFO L87 Difference]: Start difference. First operand 1112 states and 2126 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-11-19 06:39:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:17,531 INFO L93 Difference]: Finished difference Result 2207 states and 4236 transitions. [2022-11-19 06:39:17,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:39:17,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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 64 [2022-11-19 06:39:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:17,547 INFO L225 Difference]: With dead ends: 2207 [2022-11-19 06:39:17,548 INFO L226 Difference]: Without dead ends: 1114 [2022-11-19 06:39:17,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:39:17,557 INFO L413 NwaCegarLoop]: 2097 mSDtfsCounter, 1 mSDsluCounter, 4190 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:17,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6287 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 06:39:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2022-11-19 06:39:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2022-11-19 06:39:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 606 states have (on average 1.8514851485148516) internal successors, (1122), 1108 states have internal predecessors, (1122), 503 states have call successors, (503), 2 states have call predecessors, (503), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-19 06:39:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 2129 transitions. [2022-11-19 06:39:17,843 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 2129 transitions. Word has length 64 [2022-11-19 06:39:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:17,844 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 2129 transitions. [2022-11-19 06:39:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-11-19 06:39:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 2129 transitions. [2022-11-19 06:39:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 06:39:17,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:17,847 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] [2022-11-19 06:39:17,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:18,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:18,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash 957346886, now seen corresponding path program 1 times [2022-11-19 06:39:18,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:39:18,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378746612] [2022-11-19 06:39:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:18,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:39:18,165 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:39:18,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222238031] [2022-11-19 06:39:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:18,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:18,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:39:18,172 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:39:18,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:40:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:11,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:40:11,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:40:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:40:11,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:40:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:40:11,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:11,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378746612] [2022-11-19 06:40:11,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:40:11,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222238031] [2022-11-19 06:40:11,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222238031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:40:11,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [26864011] [2022-11-19 06:40:11,427 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-19 06:40:11,428 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:40:11,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:40:11,440 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:40:11,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:40:11,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 06:40:11,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 06:40:11,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 06:40:11,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,636 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:40:11,637 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 [2022-11-19 06:40:11,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,652 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 [2022-11-19 06:40:11,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,726 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 06:40:11,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2022-11-19 06:40:11,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,798 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 06:40:11,798 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 [2022-11-19 06:40:11,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,825 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 [2022-11-19 06:40:11,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,854 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 [2022-11-19 06:40:11,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:11,877 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 [2022-11-19 06:40:12,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9897009 treesize of output 5376288 [2022-11-19 06:40:12,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 8458577 treesize of output 4759834 [2022-11-19 06:40:12,627 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 [2022-11-19 06:40:12,656 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 [2022-11-19 06:40:12,708 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 [2022-11-19 06:40:12,727 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 [2022-11-19 06:40:12,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-19 06:40:12,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:12,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-19 06:40:12,989 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 [2022-11-19 06:40:13,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,079 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-19 06:40:13,080 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 [2022-11-19 06:40:13,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,190 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-19 06:40:13,191 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 [2022-11-19 06:40:13,227 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 [2022-11-19 06:40:13,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-19 06:40:13,594 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 [2022-11-19 06:40:13,600 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 [2022-11-19 06:40:13,607 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 [2022-11-19 06:40:13,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2022-11-19 06:40:13,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-19 06:40:13,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 63 [2022-11-19 06:40:13,686 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 [2022-11-19 06:40:13,693 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 [2022-11-19 06:40:13,701 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 [2022-11-19 06:40:13,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:13,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 29 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458573 treesize of output 4759755 [2022-11-19 06:40:13,858 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 [2022-11-19 06:40:13,884 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 [2022-11-19 06:40:14,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:40:14,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 29 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458573 treesize of output 4759755 [2022-11-19 06:40:14,151 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 [2022-11-19 06:40:14,172 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 [2022-11-19 06:40:15,411 INFO L217 Elim1Store]: Index analysis took 930 ms [2022-11-19 06:40:20,300 INFO L321 Elim1Store]: treesize reduction 142, result has 15.5 percent of original size [2022-11-19 06:40:20,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 9519772 treesize of output 9519776 [2022-11-19 06:40:22,918 INFO L217 Elim1Store]: Index analysis took 2442 ms [2022-11-19 06:40:25,678 INFO L321 Elim1Store]: treesize reduction 206, result has 11.2 percent of original size [2022-11-19 06:40:25,679 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 9519777 treesize of output 9519780 [2022-11-19 06:40:33,394 WARN L233 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 67 DAG size of output: 32 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 06:40:33,395 INFO L321 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-19 06:40:33,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1986 treesize of output 1476 [2022-11-19 06:40:56,581 WARN L233 SmtUtils]: Spent 22.98s on a formula simplification. DAG size of input: 90 DAG size of output: 45 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 06:40:56,581 INFO L321 Elim1Store]: treesize reduction 266, result has 31.6 percent of original size [2022-11-19 06:40:56,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2005 treesize of output 1814 [2022-11-19 06:40:57,474 INFO L217 Elim1Store]: Index analysis took 696 ms [2022-11-19 06:41:21,661 WARN L233 SmtUtils]: Spent 23.65s on a formula simplification. DAG size of input: 252 DAG size of output: 150 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 06:41:21,662 INFO L321 Elim1Store]: treesize reduction 2438, result has 32.1 percent of original size [2022-11-19 06:41:21,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 1542 treesize of output 2093 [2022-11-19 06:41:22,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:22,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2022-11-19 06:41:22,750 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:41:22,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:41:23,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:41:23,067 INFO L217 Elim1Store]: Index analysis took 188 ms [2022-11-19 06:41:23,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 63 [2022-11-19 06:41:23,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-11-19 06:41:24,062 INFO L217 Elim1Store]: Index analysis took 563 ms [2022-11-19 06:41:25,451 INFO L321 Elim1Store]: treesize reduction 36, result has 33.3 percent of original size [2022-11-19 06:41:25,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 116 [2022-11-19 06:41:25,625 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-19 06:41:25,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2022-11-19 06:41:26,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:26,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:26,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-11-19 06:41:26,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:41:26,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 71 [2022-11-19 06:41:26,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:26,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:26,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 57 [2022-11-19 06:41:27,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:27,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:27,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:41:27,114 INFO L217 Elim1Store]: Index analysis took 117 ms [2022-11-19 06:41:27,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-19 06:41:27,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:41:27,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-11-19 06:44:28,640 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-19 06:44:28,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 3002 treesize of output 2867 [2022-11-19 06:44:28,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-19 06:44:38,357 INFO L217 Elim1Store]: Index analysis took 927 ms [2022-11-19 06:45:14,004 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-19 06:45:14,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-19 06:45:14,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:45:14,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:45:14,207 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: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") 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:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:392) 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) ... 73 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) 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) ... 91 more [2022-11-19 06:45:14,211 INFO L158 Benchmark]: Toolchain (without parser) took 417237.71ms. Allocated memory was 100.7MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 64.8MB in the beginning and 797.4MB in the end (delta: -732.5MB). Peak memory consumption was 880.1MB. Max. memory is 16.1GB. [2022-11-19 06:45:14,211 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 100.7MB. Free memory was 56.3MB in the beginning and 56.3MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:45:14,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1399.57ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 64.6MB in the beginning and 90.9MB in the end (delta: -26.3MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2022-11-19 06:45:14,211 INFO L158 Benchmark]: Boogie Procedure Inliner took 275.35ms. Allocated memory is still 123.7MB. Free memory was 90.9MB in the beginning and 75.4MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:45:14,211 INFO L158 Benchmark]: Boogie Preprocessor took 280.85ms. Allocated memory is still 123.7MB. Free memory was 75.4MB in the beginning and 82.7MB in the end (delta: -7.3MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2022-11-19 06:45:14,212 INFO L158 Benchmark]: RCFGBuilder took 4659.87ms. Allocated memory was 123.7MB in the beginning and 211.8MB in the end (delta: 88.1MB). Free memory was 82.1MB in the beginning and 79.2MB in the end (delta: 3.0MB). Peak memory consumption was 107.5MB. Max. memory is 16.1GB. [2022-11-19 06:45:14,212 INFO L158 Benchmark]: TraceAbstraction took 410610.43ms. Allocated memory was 211.8MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 78.1MB in the beginning and 797.4MB in the end (delta: -719.3MB). Peak memory consumption was 782.2MB. Max. memory is 16.1GB. [2022-11-19 06:45:14,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 100.7MB. Free memory was 56.3MB in the beginning and 56.3MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1399.57ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 64.6MB in the beginning and 90.9MB in the end (delta: -26.3MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 275.35ms. Allocated memory is still 123.7MB. Free memory was 90.9MB in the beginning and 75.4MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 280.85ms. Allocated memory is still 123.7MB. Free memory was 75.4MB in the beginning and 82.7MB in the end (delta: -7.3MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * RCFGBuilder took 4659.87ms. Allocated memory was 123.7MB in the beginning and 211.8MB in the end (delta: 88.1MB). Free memory was 82.1MB in the beginning and 79.2MB in the end (delta: 3.0MB). Peak memory consumption was 107.5MB. Max. memory is 16.1GB. * TraceAbstraction took 410610.43ms. Allocated memory was 211.8MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 78.1MB in the beginning and 797.4MB in the end (delta: -719.3MB). Peak memory consumption was 782.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:45:16,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:45:16,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:45:16,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:45:16,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:45:16,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:45:16,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:45:16,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:45:16,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:45:16,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:45:16,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:45:16,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:45:16,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:45:16,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:45:16,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:45:16,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:45:16,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:45:16,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:45:16,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:45:16,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:45:16,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:45:16,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:45:16,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:45:16,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:45:16,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:45:16,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:45:16,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:45:16,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:45:16,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:45:16,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:45:16,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:45:16,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:45:16,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:45:16,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:45:16,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:45:16,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:45:16,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:45:16,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:45:16,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:45:16,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:45:16,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:45:16,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 06:45:16,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:45:16,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:45:16,815 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:45:16,815 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:45:16,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:45:16,817 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:45:16,818 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:45:16,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:45:16,818 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:45:16,819 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:45:16,820 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:45:16,820 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:45:16,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:45:16,822 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:45:16,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:45:16,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:45:16,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:45:16,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:45:16,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:45:16,824 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:45:16,825 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:45:16,825 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:45:16,825 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:45:16,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:45:16,826 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:45:16,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:45:16,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:45:16,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:45:16,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:45:16,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:45:16,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:45:16,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:45:16,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:45:16,830 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:45:16,830 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:45:16,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:45:16,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:45:16,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:45:16,831 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_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 961225f1af8bda006e5a86aed07a62a3e426daf2d218eb9a2332372592a548eb [2022-11-19 06:45:17,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:45:17,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:45:17,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:45:17,360 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:45:17,361 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:45:17,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2022-11-19 06:45:17,458 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/data/182b568b9/5fb876e4f2394c10a36a0fed38e02588/FLAG301691c84 [2022-11-19 06:45:18,344 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:45:18,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i [2022-11-19 06:45:18,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/data/182b568b9/5fb876e4f2394c10a36a0fed38e02588/FLAG301691c84 [2022-11-19 06:45:18,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/data/182b568b9/5fb876e4f2394c10a36a0fed38e02588 [2022-11-19 06:45:18,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:45:18,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:45:18,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:45:18,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:45:18,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:45:18,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:45:18" (1/1) ... [2022-11-19 06:45:18,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65496ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:18, skipping insertion in model container [2022-11-19 06:45:18,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:45:18" (1/1) ... [2022-11-19 06:45:18,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:45:18,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:45:19,582 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2022-11-19 06:45:19,919 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2022-11-19 06:45:19,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:45:19,973 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 06:45:20,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:45:20,034 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2022-11-19 06:45:20,196 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2022-11-19 06:45:20,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:45:20,225 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:45:20,253 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[33021,33034] [2022-11-19 06:45:20,381 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-2.i[84583,84596] [2022-11-19 06:45:20,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:45:20,439 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:45:20,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20 WrapperNode [2022-11-19 06:45:20,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:45:20,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:45:20,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:45:20,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:45:20,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,679 INFO L138 Inliner]: procedures = 180, calls = 781, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3015 [2022-11-19 06:45:20,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:45:20,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:45:20,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:45:20,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:45:20,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:45:20,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:45:20,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:45:20,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:45:20,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (1/1) ... [2022-11-19 06:45:20,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:45:20,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:45:20,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:45:20,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:45:21,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 06:45:21,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 06:45:21,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:45:21,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:45:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:45:21,028 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:45:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:45:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:45:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:45:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:45:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 06:45:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:45:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:45:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 06:45:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:45:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:45:21,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:45:21,395 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:45:21,397 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:45:31,207 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:45:31,228 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:45:31,228 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 06:45:31,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:45:31 BoogieIcfgContainer [2022-11-19 06:45:31,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:45:31,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:45:31,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:45:31,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:45:31,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:45:18" (1/3) ... [2022-11-19 06:45:31,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54de8ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:45:31, skipping insertion in model container [2022-11-19 06:45:31,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:45:20" (2/3) ... [2022-11-19 06:45:31,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54de8ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:45:31, skipping insertion in model container [2022-11-19 06:45:31,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:45:31" (3/3) ... [2022-11-19 06:45:31,243 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-2.i [2022-11-19 06:45:31,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:45:31,267 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 06:45:31,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:45:31,419 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;@86b6b97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:45:31,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 06:45:31,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 1194 states, 686 states have (on average 1.91399416909621) internal successors, (1313), 1188 states have internal predecessors, (1313), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:45:31,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:45:31,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:31,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:45:31,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:45:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:31,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1311560150, now seen corresponding path program 1 times [2022-11-19 06:45:31,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:45:31,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073863748] [2022-11-19 06:45:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:31,466 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 [2022-11-19 06:45:31,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:45:31,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:45:31,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:31,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 06:45:31,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:45:31,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:45:31,759 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:45:31,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073863748] [2022-11-19 06:45:31,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073863748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:31,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:31,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:45:31,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341575682] [2022-11-19 06:45:31,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:31,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:45:31,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:45:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:45:31,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:45:31,821 INFO L87 Difference]: Start difference. First operand has 1194 states, 686 states have (on average 1.91399416909621) internal successors, (1313), 1188 states have internal predecessors, (1313), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:32,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:32,117 INFO L93 Difference]: Finished difference Result 2386 states and 5136 transitions. [2022-11-19 06:45:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:45:32,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 06:45:32,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:32,156 INFO L225 Difference]: With dead ends: 2386 [2022-11-19 06:45:32,156 INFO L226 Difference]: Without dead ends: 1161 [2022-11-19 06:45:32,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:45:32,176 INFO L413 NwaCegarLoop]: 2250 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, 2250 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 [2022-11-19 06:45:32,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:45:32,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-11-19 06:45:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2022-11-19 06:45:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 654 states have (on average 1.834862385321101) internal successors, (1200), 1155 states have internal predecessors, (1200), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:45:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 2206 transitions. [2022-11-19 06:45:32,699 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 2206 transitions. Word has length 9 [2022-11-19 06:45:32,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:32,700 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 2206 transitions. [2022-11-19 06:45:32,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:32,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 2206 transitions. [2022-11-19 06:45:32,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 06:45:32,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:32,703 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] [2022-11-19 06:45:32,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:32,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:32,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:45:32,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:32,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1831599231, now seen corresponding path program 1 times [2022-11-19 06:45:32,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:45:32,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065593649] [2022-11-19 06:45:32,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:32,920 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 [2022-11-19 06:45:32,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:45:32,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:45:32,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:33,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:45:33,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:45:33,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:45:33,301 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:45:33,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065593649] [2022-11-19 06:45:33,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065593649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:33,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:33,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:45:33,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490358184] [2022-11-19 06:45:33,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:33,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:45:33,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:45:33,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:45:33,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:45:33,318 INFO L87 Difference]: Start difference. First operand 1161 states and 2206 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:33,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:33,734 INFO L93 Difference]: Finished difference Result 2238 states and 4304 transitions. [2022-11-19 06:45:33,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:45:33,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-11-19 06:45:33,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:33,754 INFO L225 Difference]: With dead ends: 2238 [2022-11-19 06:45:33,754 INFO L226 Difference]: Without dead ends: 1170 [2022-11-19 06:45:33,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:33,765 INFO L413 NwaCegarLoop]: 2181 mSDtfsCounter, 1076 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 4980 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:45:33,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 4980 Invalid, 60 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:45:33,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-11-19 06:45:34,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1164. [2022-11-19 06:45:34,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 657 states have (on average 1.8188736681887367) internal successors, (1195), 1158 states have internal predecessors, (1195), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:45:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 2201 transitions. [2022-11-19 06:45:34,131 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 2201 transitions. Word has length 44 [2022-11-19 06:45:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:34,132 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 2201 transitions. [2022-11-19 06:45:34,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 2201 transitions. [2022-11-19 06:45:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 06:45:34,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:34,137 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] [2022-11-19 06:45:34,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:45:34,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:34,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:45:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1557886965, now seen corresponding path program 1 times [2022-11-19 06:45:34,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:45:34,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581230637] [2022-11-19 06:45:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:34,354 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 [2022-11-19 06:45:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:45:34,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:45:34,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:34,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:45:34,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:45:34,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:45:34,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:45:34,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581230637] [2022-11-19 06:45:34,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581230637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:34,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:34,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:45:34,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400012445] [2022-11-19 06:45:34,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:34,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:45:34,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:45:34,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:45:34,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:34,805 INFO L87 Difference]: Start difference. First operand 1164 states and 2201 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:35,073 INFO L93 Difference]: Finished difference Result 2234 states and 4281 transitions. [2022-11-19 06:45:35,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:45:35,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-11-19 06:45:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:35,084 INFO L225 Difference]: With dead ends: 2234 [2022-11-19 06:45:35,084 INFO L226 Difference]: Without dead ends: 1163 [2022-11-19 06:45:35,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:35,096 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 1053 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 4979 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:45:35,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 4979 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:45:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-11-19 06:45:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1158. [2022-11-19 06:45:35,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 651 states have (on average 1.8202764976958525) internal successors, (1185), 1152 states have internal predecessors, (1185), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:45:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 2191 transitions. [2022-11-19 06:45:35,354 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 2191 transitions. Word has length 44 [2022-11-19 06:45:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:35,355 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 2191 transitions. [2022-11-19 06:45:35,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 2191 transitions. [2022-11-19 06:45:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 06:45:35,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:35,357 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] [2022-11-19 06:45:35,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:45:35,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:35,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:45:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1299721527, now seen corresponding path program 1 times [2022-11-19 06:45:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:45:35,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767248913] [2022-11-19 06:45:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:35,573 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 [2022-11-19 06:45:35,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:45:35,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:45:35,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:35,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:45:35,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:35,908 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:45:35,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:45:35,920 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 29 treesize of output 38 [2022-11-19 06:45:36,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:45:36,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 22 [2022-11-19 06:45:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:45:36,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:45:36,049 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:45:36,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767248913] [2022-11-19 06:45:36,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767248913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:36,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:36,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:45:36,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4219579] [2022-11-19 06:45:36,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:36,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:45:36,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:45:36,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:45:36,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:45:36,053 INFO L87 Difference]: Start difference. First operand 1158 states and 2191 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:39,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:46,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:45:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:46,774 INFO L93 Difference]: Finished difference Result 3285 states and 6332 transitions. [2022-11-19 06:45:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:45:46,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-11-19 06:45:46,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:46,797 INFO L225 Difference]: With dead ends: 3285 [2022-11-19 06:45:46,797 INFO L226 Difference]: Without dead ends: 2219 [2022-11-19 06:45:46,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:46,807 INFO L413 NwaCegarLoop]: 2676 mSDtfsCounter, 1066 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 6981 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:45:46,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 6981 Invalid, 589 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 570 Invalid, 1 Unknown, 17 Unchecked, 10.2s Time] [2022-11-19 06:45:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2022-11-19 06:45:47,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 1160. [2022-11-19 06:45:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 653 states have (on average 1.8177641653905054) internal successors, (1187), 1154 states have internal predecessors, (1187), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:45:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 2193 transitions. [2022-11-19 06:45:47,420 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 2193 transitions. Word has length 44 [2022-11-19 06:45:47,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:47,420 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 2193 transitions. [2022-11-19 06:45:47,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:47,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 2193 transitions. [2022-11-19 06:45:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 06:45:47,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:47,429 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:45:47,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:47,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:47,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:45:47,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:47,643 INFO L85 PathProgramCache]: Analyzing trace with hash 136953987, now seen corresponding path program 1 times [2022-11-19 06:45:47,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:45:47,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048378346] [2022-11-19 06:45:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:47,645 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 [2022-11-19 06:45:47,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:45:47,648 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:45:47,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:49,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:45:49,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:45:49,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:45:49,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:45:49,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048378346] [2022-11-19 06:45:49,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048378346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:49,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:49,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:45:49,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911561832] [2022-11-19 06:45:49,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:49,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:45:49,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:45:49,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:45:49,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:45:49,320 INFO L87 Difference]: Start difference. First operand 1160 states and 2193 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:49,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:49,792 INFO L93 Difference]: Finished difference Result 2325 states and 4394 transitions. [2022-11-19 06:45:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:45:49,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-11-19 06:45:49,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:49,801 INFO L225 Difference]: With dead ends: 2325 [2022-11-19 06:45:49,802 INFO L226 Difference]: Without dead ends: 1169 [2022-11-19 06:45:49,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:49,809 INFO L413 NwaCegarLoop]: 2169 mSDtfsCounter, 1168 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 4846 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 [2022-11-19 06:45:49,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 4846 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:45:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2022-11-19 06:45:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1163. [2022-11-19 06:45:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 656 states have (on average 1.8018292682926829) internal successors, (1182), 1157 states have internal predecessors, (1182), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2022-11-19 06:45:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2188 transitions. [2022-11-19 06:45:50,331 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2188 transitions. Word has length 96 [2022-11-19 06:45:50,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:50,332 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 2188 transitions. [2022-11-19 06:45:50,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:50,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2188 transitions. [2022-11-19 06:45:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 06:45:50,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:50,334 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:45:50,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:45:50,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:50,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:45:50,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:50,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1951210737, now seen corresponding path program 1 times [2022-11-19 06:45:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:45:50,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555665523] [2022-11-19 06:45:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:50,553 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 [2022-11-19 06:45:50,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:45:50,555 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:45:50,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:52,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:45:52,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:45:52,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:45:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:45:52,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:45:52,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555665523] [2022-11-19 06:45:52,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555665523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:45:52,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [516021223] [2022-11-19 06:45:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:52,714 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:45:52,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:45:52,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:45:52,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-19 06:45:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:54,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:45:54,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:45:54,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:45:54,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [516021223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:54,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:45:54,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 5 [2022-11-19 06:45:54,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139975225] [2022-11-19 06:45:54,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:54,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:45:54,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:45:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:45:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:54,696 INFO L87 Difference]: Start difference. First operand 1163 states and 2188 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:45:56,314 INFO L93 Difference]: Finished difference Result 3444 states and 6512 transitions. [2022-11-19 06:45:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:45:56,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-11-19 06:45:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:45:56,332 INFO L225 Difference]: With dead ends: 3444 [2022-11-19 06:45:56,332 INFO L226 Difference]: Without dead ends: 2285 [2022-11-19 06:45:56,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:45:56,340 INFO L413 NwaCegarLoop]: 2712 mSDtfsCounter, 1101 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 4859 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:45:56,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 4859 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 06:45:56,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2022-11-19 06:45:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2283. [2022-11-19 06:45:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 1275 states have (on average 1.8172549019607842) internal successors, (2317), 2276 states have internal predecessors, (2317), 1004 states have call successors, (1004), 2 states have call predecessors, (1004), 2 states have return successors, (1004), 6 states have call predecessors, (1004), 1004 states have call successors, (1004) [2022-11-19 06:45:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 4325 transitions. [2022-11-19 06:45:57,234 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 4325 transitions. Word has length 96 [2022-11-19 06:45:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:45:57,235 INFO L495 AbstractCegarLoop]: Abstraction has 2283 states and 4325 transitions. [2022-11-19 06:45:57,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:45:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 4325 transitions. [2022-11-19 06:45:57,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 06:45:57,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:45:57,238 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:45:57,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:45:57,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:45:57,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:45:57,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:45:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:45:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1540875462, now seen corresponding path program 1 times [2022-11-19 06:45:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:45:57,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867927600] [2022-11-19 06:45:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:45:57,657 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 [2022-11-19 06:45:57,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:45:57,658 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:45:57,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:45:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:45:59,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:45:59,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:45:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:45:59,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:45:59,585 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:45:59,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867927600] [2022-11-19 06:45:59,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867927600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:45:59,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:45:59,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:45:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555853089] [2022-11-19 06:45:59,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:45:59,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:45:59,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:45:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:45:59,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:45:59,588 INFO L87 Difference]: Start difference. First operand 2283 states and 4325 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:00,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:00,648 INFO L93 Difference]: Finished difference Result 3511 states and 6579 transitions. [2022-11-19 06:46:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:46:00,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-19 06:46:00,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:00,666 INFO L225 Difference]: With dead ends: 3511 [2022-11-19 06:46:00,666 INFO L226 Difference]: Without dead ends: 2361 [2022-11-19 06:46:00,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:46:00,674 INFO L413 NwaCegarLoop]: 2713 mSDtfsCounter, 1053 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 4871 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:00,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 4871 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 06:46:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2022-11-19 06:46:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2359. [2022-11-19 06:46:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 1351 states have (on average 1.774241302738712) internal successors, (2397), 2352 states have internal predecessors, (2397), 1004 states have call successors, (1004), 2 states have call predecessors, (1004), 2 states have return successors, (1004), 6 states have call predecessors, (1004), 1004 states have call successors, (1004) [2022-11-19 06:46:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 4405 transitions. [2022-11-19 06:46:01,543 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 4405 transitions. Word has length 103 [2022-11-19 06:46:01,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:01,546 INFO L495 AbstractCegarLoop]: Abstraction has 2359 states and 4405 transitions. [2022-11-19 06:46:01,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:46:01,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 4405 transitions. [2022-11-19 06:46:01,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-19 06:46:01,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:01,548 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] [2022-11-19 06:46:01,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:01,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:46:01,763 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:01,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:01,763 INFO L85 PathProgramCache]: Analyzing trace with hash -295073475, now seen corresponding path program 1 times [2022-11-19 06:46:01,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:46:01,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490893573] [2022-11-19 06:46:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:01,765 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 [2022-11-19 06:46:01,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:46:01,767 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:46:01,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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)] Waiting until timeout for monitored process [2022-11-19 06:46:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:02,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:46:02,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:46:02,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:46:02,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:46:02,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490893573] [2022-11-19 06:46:02,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490893573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:02,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:46:02,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:46:02,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187583178] [2022-11-19 06:46:02,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:02,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:46:02,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:46:02,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:46:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:46:02,872 INFO L87 Difference]: Start difference. First operand 2359 states and 4405 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2022-11-19 06:46:03,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:03,332 INFO L93 Difference]: Finished difference Result 4676 states and 8768 transitions. [2022-11-19 06:46:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:46:03,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 111 [2022-11-19 06:46:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:03,351 INFO L225 Difference]: With dead ends: 4676 [2022-11-19 06:46:03,351 INFO L226 Difference]: Without dead ends: 2362 [2022-11-19 06:46:03,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:46:03,364 INFO L413 NwaCegarLoop]: 2177 mSDtfsCounter, 2 mSDsluCounter, 4350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6527 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:03,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6527 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:46:03,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-11-19 06:46:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2022-11-19 06:46:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 1353 states have (on average 1.7738359201773837) internal successors, (2400), 2355 states have internal predecessors, (2400), 1004 states have call successors, (1004), 2 states have call predecessors, (1004), 3 states have return successors, (1006), 6 states have call predecessors, (1006), 1004 states have call successors, (1006) [2022-11-19 06:46:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 4410 transitions. [2022-11-19 06:46:04,315 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 4410 transitions. Word has length 111 [2022-11-19 06:46:04,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:04,316 INFO L495 AbstractCegarLoop]: Abstraction has 2362 states and 4410 transitions. [2022-11-19 06:46:04,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2022-11-19 06:46:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 4410 transitions. [2022-11-19 06:46:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 06:46:04,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:04,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:04,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:04,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:46:04,534 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:04,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:04,534 INFO L85 PathProgramCache]: Analyzing trace with hash -650689061, now seen corresponding path program 1 times [2022-11-19 06:46:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:46:04,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014950047] [2022-11-19 06:46:04,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:04,535 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 [2022-11-19 06:46:04,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:46:04,537 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:46:04,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:46:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:05,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:46:05,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:46:05,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:46:05,800 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:46:05,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014950047] [2022-11-19 06:46:05,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014950047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:05,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [906857338] [2022-11-19 06:46:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:05,801 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:46:05,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:46:05,803 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:46:05,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-19 06:46:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:07,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:46:07,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 06:46:07,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:46:07,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [906857338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:46:07,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:46:07,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 06:46:07,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265124034] [2022-11-19 06:46:07,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:46:07,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:46:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:46:07,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:46:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:46:07,597 INFO L87 Difference]: Start difference. First operand 2362 states and 4410 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2022-11-19 06:46:10,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:12,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:46:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:14,854 INFO L93 Difference]: Finished difference Result 3638 states and 6729 transitions. [2022-11-19 06:46:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:46:14,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 113 [2022-11-19 06:46:14,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:14,865 INFO L225 Difference]: With dead ends: 3638 [2022-11-19 06:46:14,865 INFO L226 Difference]: Without dead ends: 1321 [2022-11-19 06:46:14,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-19 06:46:14,879 INFO L413 NwaCegarLoop]: 2180 mSDtfsCounter, 2224 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1003 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:14,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2224 Valid, 3247 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-19 06:46:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2022-11-19 06:46:15,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1207. [2022-11-19 06:46:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 699 states have (on average 1.7567954220314734) internal successors, (1228), 1201 states have internal predecessors, (1228), 503 states have call successors, (503), 2 states have call predecessors, (503), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-19 06:46:15,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 2235 transitions. [2022-11-19 06:46:15,374 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 2235 transitions. Word has length 113 [2022-11-19 06:46:15,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:15,376 INFO L495 AbstractCegarLoop]: Abstraction has 1207 states and 2235 transitions. [2022-11-19 06:46:15,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2022-11-19 06:46:15,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 2235 transitions. [2022-11-19 06:46:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-19 06:46:15,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:15,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:46:15,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:15,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:15,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:46:15,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:15,797 INFO L85 PathProgramCache]: Analyzing trace with hash -725533970, now seen corresponding path program 1 times [2022-11-19 06:46:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:46:15,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496896141] [2022-11-19 06:46:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:15,798 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 [2022-11-19 06:46:15,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:46:15,799 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:46:15,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:46:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:16,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:46:16,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:46:16,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:46:17,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:46:17,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496896141] [2022-11-19 06:46:17,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496896141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:17,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1693279326] [2022-11-19 06:46:17,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:17,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:46:17,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:46:17,046 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:46:17,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-19 06:46:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:19,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:46:19,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:46:19,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:46:19,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1693279326] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:19,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116892789] [2022-11-19 06:46:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:46:19,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:19,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:46:19,104 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:46:19,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-19 06:46:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:46:20,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:46:20,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:20,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:46:20,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:46:20,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116892789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:20,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:46:20,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2022-11-19 06:46:20,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009395741] [2022-11-19 06:46:20,477 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:46:20,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 06:46:20,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:46:20,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 06:46:20,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-19 06:46:20,479 INFO L87 Difference]: Start difference. First operand 1207 states and 2235 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 06:46:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:21,315 INFO L93 Difference]: Finished difference Result 2381 states and 4443 transitions. [2022-11-19 06:46:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:46:21,317 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 120 [2022-11-19 06:46:21,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:21,325 INFO L225 Difference]: With dead ends: 2381 [2022-11-19 06:46:21,326 INFO L226 Difference]: Without dead ends: 1222 [2022-11-19 06:46:21,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:46:21,333 INFO L413 NwaCegarLoop]: 2176 mSDtfsCounter, 60 mSDsluCounter, 8688 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 10864 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:21,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 10864 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:46:21,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-11-19 06:46:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1218. [2022-11-19 06:46:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 709 states have (on average 1.7574047954866008) internal successors, (1246), 1211 states have internal predecessors, (1246), 503 states have call successors, (503), 3 states have call predecessors, (503), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-19 06:46:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 2253 transitions. [2022-11-19 06:46:21,846 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 2253 transitions. Word has length 120 [2022-11-19 06:46:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:21,847 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 2253 transitions. [2022-11-19 06:46:21,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-19 06:46:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 2253 transitions. [2022-11-19 06:46:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-19 06:46:21,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:21,849 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2022-11-19 06:46:21,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:22,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:22,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:46:22,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash 653279948, now seen corresponding path program 2 times [2022-11-19 06:46:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:46:22,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912535930] [2022-11-19 06:46:22,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:46:22,477 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 [2022-11-19 06:46:22,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:46:22,478 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:46:22,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 (16)] Waiting until timeout for monitored process [2022-11-19 06:46:23,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:46:23,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:46:23,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:46:23,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 06:46:23,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:46:24,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:46:24,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912535930] [2022-11-19 06:46:24,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912535930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:24,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1964187451] [2022-11-19 06:46:24,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:46:24,308 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:46:24,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:46:24,315 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:46:24,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-19 06:46:26,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:46:26,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:46:26,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:46:26,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 06:46:26,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:46:27,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1964187451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:27,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184772642] [2022-11-19 06:46:27,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:46:27,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:27,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:46:27,135 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:46:27,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 06:46:28,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:46:28,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:46:28,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 06:46:28,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 06:46:28,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:46:29,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184772642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:29,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:46:29,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-19 06:46:29,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95988475] [2022-11-19 06:46:29,248 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:46:29,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 06:46:29,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:46:29,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 06:46:29,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-19 06:46:29,251 INFO L87 Difference]: Start difference. First operand 1218 states and 2253 transitions. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 06:46:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:46:30,978 INFO L93 Difference]: Finished difference Result 2399 states and 4468 transitions. [2022-11-19 06:46:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:46:30,979 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 126 [2022-11-19 06:46:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:46:30,988 INFO L225 Difference]: With dead ends: 2399 [2022-11-19 06:46:30,988 INFO L226 Difference]: Without dead ends: 1231 [2022-11-19 06:46:30,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 06:46:30,996 INFO L413 NwaCegarLoop]: 2179 mSDtfsCounter, 76 mSDsluCounter, 17396 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 19575 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:46:30,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 19575 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 06:46:30,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-11-19 06:46:31,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1225. [2022-11-19 06:46:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 716 states have (on average 1.75) internal successors, (1253), 1218 states have internal predecessors, (1253), 503 states have call successors, (503), 3 states have call predecessors, (503), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2022-11-19 06:46:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2260 transitions. [2022-11-19 06:46:31,430 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2260 transitions. Word has length 126 [2022-11-19 06:46:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:46:31,431 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 2260 transitions. [2022-11-19 06:46:31,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 06:46:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2260 transitions. [2022-11-19 06:46:31,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 06:46:31,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:46:31,434 INFO L195 NwaCegarLoop]: trace histogram [15, 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] [2022-11-19 06:46:31,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 (16)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:31,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:31,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 06:46:32,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:46:32,049 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:46:32,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:46:32,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1818700008, now seen corresponding path program 3 times [2022-11-19 06:46:32,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:46:32,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674831332] [2022-11-19 06:46:32,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:46:32,051 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 [2022-11-19 06:46:32,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:46:32,052 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 06:46:32,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 06:46:37,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 06:46:37,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:46:37,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:46:37,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:46:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 06:46:37,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:46:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 06:46:38,529 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:46:38,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674831332] [2022-11-19 06:46:38,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674831332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:46:38,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1083797501] [2022-11-19 06:46:38,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:46:38,530 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:46:38,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:46:38,531 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:46:38,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-19 06:49:56,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 06:49:56,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:49:56,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 06:49:56,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:49:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 06:49:56,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:49:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 06:49:56,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1083797501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:49:56,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568969538] [2022-11-19 06:49:56,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:49:56,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:49:56,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:49:56,877 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:49:56,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c60ea5f-1802-4cc6-a494-d8dfad25ed94/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process