./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- 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 07:01:25,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:01:25,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:01:25,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:01:25,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:01:25,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:01:25,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:01:25,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:01:25,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:01:25,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:01:25,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:01:25,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:01:25,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:01:25,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:01:25,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:01:25,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:01:25,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:01:25,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:01:25,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:01:25,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:01:25,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:01:25,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:01:25,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:01:25,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:01:25,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:01:25,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:01:25,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:01:25,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:01:25,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:01:25,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:01:25,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:01:25,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:01:25,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:01:25,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:01:25,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:01:25,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:01:25,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:01:25,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:01:25,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:01:25,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:01:25,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:01:25,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:01:25,456 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:01:25,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:01:25,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:01:25,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:01:25,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:01:25,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:01:25,460 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:01:25,460 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:01:25,460 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:01:25,461 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:01:25,462 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:01:25,462 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:01:25,462 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:01:25,463 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:01:25,463 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:01:25,463 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:01:25,464 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:01:25,464 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:01:25,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:01:25,465 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:01:25,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:01:25,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:01:25,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:01:25,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:01:25,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:01:25,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:01:25,467 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:01:25,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:01:25,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:01:25,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:01:25,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:01:25,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:01:25,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:01:25,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:01:25,471 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:01:25,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:01:25,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:01:25,471 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:01:25,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:01:25,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:01:25,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:01:25,473 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2022-11-19 07:01:25,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:01:25,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:01:25,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:01:25,782 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:01:25,783 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:01:25,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2022-11-19 07:01:25,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/data/fb29fcf86/d81827674b7846b59b230ee0a580b6a5/FLAGc3c4d8172 [2022-11-19 07:01:26,427 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:01:26,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2022-11-19 07:01:26,444 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/data/fb29fcf86/d81827674b7846b59b230ee0a580b6a5/FLAGc3c4d8172 [2022-11-19 07:01:26,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/data/fb29fcf86/d81827674b7846b59b230ee0a580b6a5 [2022-11-19 07:01:26,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:01:26,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:01:26,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:01:26,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:01:26,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:01:26,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:01:26" (1/1) ... [2022-11-19 07:01:26,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a3025b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:26, skipping insertion in model container [2022-11-19 07:01:26,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:01:26" (1/1) ... [2022-11-19 07:01:26,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:01:26,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:01:27,174 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2022-11-19 07:01:27,273 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2022-11-19 07:01:27,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:01:27,293 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:01:27,324 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2022-11-19 07:01:27,430 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2022-11-19 07:01:27,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:01:27,487 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:01:27,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27 WrapperNode [2022-11-19 07:01:27,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:01:27,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:01:27,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:01:27,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:01:27,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,605 INFO L138 Inliner]: procedures = 177, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1022 [2022-11-19 07:01:27,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:01:27,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:01:27,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:01:27,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:01:27,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,686 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:01:27,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:01:27,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:01:27,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:01:27,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (1/1) ... [2022-11-19 07:01:27,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:01:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:27,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:01:27,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:01:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:01:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:01:27,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:01:27,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:01:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:01:27,818 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:01:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:01:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:01:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:01:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:01:27,818 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:01:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:01:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:01:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:01:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:01:27,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:01:28,091 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:01:28,094 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:01:29,632 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:01:30,119 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:01:30,120 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 07:01:30,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:30 BoogieIcfgContainer [2022-11-19 07:01:30,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:01:30,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:01:30,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:01:30,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:01:30,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:01:26" (1/3) ... [2022-11-19 07:01:30,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7c9261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:01:30, skipping insertion in model container [2022-11-19 07:01:30,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:01:27" (2/3) ... [2022-11-19 07:01:30,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7c9261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:01:30, skipping insertion in model container [2022-11-19 07:01:30,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:01:30" (3/3) ... [2022-11-19 07:01:30,137 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2022-11-19 07:01:30,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:01:30,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:01:30,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:01:30,254 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;@3d4b2906, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:01:30,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:01:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 110 states have (on average 1.8) internal successors, (198), 117 states have internal predecessors, (198), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:01:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:01:30,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:30,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:30,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:30,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:30,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1898435451, now seen corresponding path program 1 times [2022-11-19 07:01:30,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:30,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204387549] [2022-11-19 07:01:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:30,509 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 07:01:30,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:30,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204387549] [2022-11-19 07:01:30,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204387549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:30,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:30,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:01:30,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434658757] [2022-11-19 07:01:30,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:30,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:01:30,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:30,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:01:30,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:01:30,558 INFO L87 Difference]: Start difference. First operand has 123 states, 110 states have (on average 1.8) internal successors, (198), 117 states have internal predecessors, (198), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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 07:01:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:31,015 INFO L93 Difference]: Finished difference Result 245 states and 432 transitions. [2022-11-19 07:01:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:01:31,021 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 07:01:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:31,029 INFO L225 Difference]: With dead ends: 245 [2022-11-19 07:01:31,029 INFO L226 Difference]: Without dead ends: 122 [2022-11-19 07:01:31,032 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 07:01:31,035 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:31,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:01:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-19 07:01:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-19 07:01:31,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 110 states have (on average 1.2181818181818183) internal successors, (134), 116 states have internal predecessors, (134), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:01:31,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2022-11-19 07:01:31,079 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 8 [2022-11-19 07:01:31,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:31,080 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2022-11-19 07:01:31,080 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 07:01:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2022-11-19 07:01:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:01:31,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:31,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:31,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:01:31,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:31,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:31,082 INFO L85 PathProgramCache]: Analyzing trace with hash -94655351, now seen corresponding path program 1 times [2022-11-19 07:01:31,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:31,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141623314] [2022-11-19 07:01:31,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:31,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:31,328 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 07:01:31,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:31,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141623314] [2022-11-19 07:01:31,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141623314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:31,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:31,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:01:31,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30475475] [2022-11-19 07:01:31,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:31,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:01:31,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:01:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:01:31,338 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:01:33,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:01:33,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:33,684 INFO L93 Difference]: Finished difference Result 258 states and 326 transitions. [2022-11-19 07:01:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:01:33,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:01:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:33,691 INFO L225 Difference]: With dead ends: 258 [2022-11-19 07:01:33,691 INFO L226 Difference]: Without dead ends: 189 [2022-11-19 07:01:33,692 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 07:01:33,693 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 73 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:33,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 355 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 07:01:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-19 07:01:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2022-11-19 07:01:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 118 states have internal predecessors, (136), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:01:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2022-11-19 07:01:33,711 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 13 [2022-11-19 07:01:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:33,711 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2022-11-19 07:01:33,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:01:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2022-11-19 07:01:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-19 07:01:33,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:33,713 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] [2022-11-19 07:01:33,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:01:33,714 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:33,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash 339208180, now seen corresponding path program 1 times [2022-11-19 07:01:33,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:33,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521013854] [2022-11-19 07:01:33,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:33,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:33,868 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:01:33,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74940187] [2022-11-19 07:01:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:33,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:33,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:33,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:33,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:01:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:34,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:01:34,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:34,797 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 07:01:34,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:01:34,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:34,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521013854] [2022-11-19 07:01:34,798 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:01:34,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74940187] [2022-11-19 07:01:34,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74940187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:34,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:34,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:01:34,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117731245] [2022-11-19 07:01:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:34,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:01:34,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:34,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:01:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:01:34,801 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:01:35,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:35,993 INFO L93 Difference]: Finished difference Result 304 states and 377 transitions. [2022-11-19 07:01:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:01:35,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-19 07:01:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:35,999 INFO L225 Difference]: With dead ends: 304 [2022-11-19 07:01:35,999 INFO L226 Difference]: Without dead ends: 183 [2022-11-19 07:01:36,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 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 07:01:36,001 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:36,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 278 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:01:36,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-19 07:01:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2022-11-19 07:01:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 161 states have internal predecessors, (185), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:01:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2022-11-19 07:01:36,020 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 37 [2022-11-19 07:01:36,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:36,020 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2022-11-19 07:01:36,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:01:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2022-11-19 07:01:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 07:01:36,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:36,022 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] [2022-11-19 07:01:36,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:01:36,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:36,231 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:36,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:36,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1571641394, now seen corresponding path program 1 times [2022-11-19 07:01:36,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:36,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964450704] [2022-11-19 07:01:36,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:36,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:36,351 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:01:36,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578256640] [2022-11-19 07:01:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:36,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:36,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:36,360 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:36,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:01:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:36,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:01:36,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:36,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:01:36,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-19 07:01:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 07:01:36,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:01:37,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:37,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964450704] [2022-11-19 07:01:37,002 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:01:37,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578256640] [2022-11-19 07:01:37,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578256640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:37,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:37,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:01:37,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206998724] [2022-11-19 07:01:37,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:37,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:01:37,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:37,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:01:37,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:01:37,006 INFO L87 Difference]: Start difference. First operand 167 states and 201 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:01:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:38,515 INFO L93 Difference]: Finished difference Result 231 states and 285 transitions. [2022-11-19 07:01:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:01:38,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-11-19 07:01:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:38,519 INFO L225 Difference]: With dead ends: 231 [2022-11-19 07:01:38,519 INFO L226 Difference]: Without dead ends: 212 [2022-11-19 07:01:38,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 07:01:38,521 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 47 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:38,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 354 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-19 07:01:38,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-19 07:01:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2022-11-19 07:01:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 157 states have (on average 1.1910828025477707) internal successors, (187), 163 states have internal predecessors, (187), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:01:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2022-11-19 07:01:38,538 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 50 [2022-11-19 07:01:38,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:38,539 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2022-11-19 07:01:38,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:01:38,539 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2022-11-19 07:01:38,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 07:01:38,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:38,541 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 07:01:38,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:38,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:38,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2144578966, now seen corresponding path program 1 times [2022-11-19 07:01:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:38,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10225731] [2022-11-19 07:01:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:38,813 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:01:38,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596513767] [2022-11-19 07:01:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:38,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:38,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:38,815 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:38,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:01:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:39,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:01:39,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:39,514 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 07:01:39,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:01:39,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:39,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10225731] [2022-11-19 07:01:39,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:01:39,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596513767] [2022-11-19 07:01:39,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596513767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:39,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:39,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:01:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074715933] [2022-11-19 07:01:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:39,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:01:39,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:39,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:01:39,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:01:39,517 INFO L87 Difference]: Start difference. First operand 169 states and 203 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 07:01:40,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:40,322 INFO L93 Difference]: Finished difference Result 395 states and 492 transitions. [2022-11-19 07:01:40,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:01:40,323 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 07:01:40,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:40,325 INFO L225 Difference]: With dead ends: 395 [2022-11-19 07:01:40,325 INFO L226 Difference]: Without dead ends: 242 [2022-11-19 07:01:40,326 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 07:01:40,327 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 260 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:40,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 290 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 07:01:40,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-19 07:01:40,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 214. [2022-11-19 07:01:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 202 states have (on average 1.193069306930693) internal successors, (241), 208 states have internal predecessors, (241), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:01:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2022-11-19 07:01:40,345 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 57 [2022-11-19 07:01:40,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:40,345 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2022-11-19 07:01:40,345 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 07:01:40,346 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2022-11-19 07:01:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 07:01:40,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:40,347 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 07:01:40,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:40,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:40,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2121750984, now seen corresponding path program 1 times [2022-11-19 07:01:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:40,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319198589] [2022-11-19 07:01:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:40,621 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:01:40,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139950276] [2022-11-19 07:01:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:40,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:40,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:40,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:40,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:01:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:52,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:01:52,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:01:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:01:52,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:01:52,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:52,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319198589] [2022-11-19 07:01:52,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:01:52,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139950276] [2022-11-19 07:01:52,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139950276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:52,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:52,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:01:52,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520150614] [2022-11-19 07:01:52,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:52,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:01:52,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:52,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:01:52,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:01:52,442 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:01:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:53,630 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2022-11-19 07:01:53,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:01:53,633 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2022-11-19 07:01:53,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:53,635 INFO L225 Difference]: With dead ends: 411 [2022-11-19 07:01:53,635 INFO L226 Difference]: Without dead ends: 216 [2022-11-19 07:01:53,636 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 07:01:53,636 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:53,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 392 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:01:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-19 07:01:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-19 07:01:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 210 states have internal predecessors, (243), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 07:01:53,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2022-11-19 07:01:53,652 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 64 [2022-11-19 07:01:53,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:53,652 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2022-11-19 07:01:53,653 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:01:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2022-11-19 07:01:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:01:53,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:53,655 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 07:01:53,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:01:53,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:53,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:53,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:53,877 INFO L85 PathProgramCache]: Analyzing trace with hash -869473738, now seen corresponding path program 1 times [2022-11-19 07:01:53,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:53,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774416116] [2022-11-19 07:01:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:53,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:53,953 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:01:53,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296869650] [2022-11-19 07:01:53,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:53,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:01:53,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:01:53,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:01:53,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:02:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:31,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:02:31,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:02:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:02:31,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:02:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:02:31,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:31,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774416116] [2022-11-19 07:02:31,967 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:02:31,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296869650] [2022-11-19 07:02:31,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296869650] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:02:31,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [859985811] [2022-11-19 07:02:31,987 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-19 07:02:31,988 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:02:31,991 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:02:31,996 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:02:31,997 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:02:32,095 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 07:02:32,100 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 07:02:32,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,119 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 07:02:32,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-19 07:02:32,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,129 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 07:02:32,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,204 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 07:02:32,204 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 07:02:32,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,268 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:02:32,268 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 07:02:32,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,325 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-19 07:02:32,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-11-19 07:02:32,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-19 07:02:32,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,405 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 07:02:32,405 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 07:02:32,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,432 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 07:02:32,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,908 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 07:02:32,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:32,971 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 9897007 treesize of output 5376300 [2022-11-19 07:02:33,008 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 07:02:33,031 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 07:02:33,071 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 07:02:33,086 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 07:02:33,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,146 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 07:02:33,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,204 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 07:02:33,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,297 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 07:02:33,339 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 07:02:33,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,428 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-19 07:02:33,428 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 07:02:33,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:33,517 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-19 07:02:33,517 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 07:02:33,550 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 07:02:33,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 07:02:33,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:02:33,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-19 07:02:33,815 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:02:33,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2022-11-19 07:02:33,847 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-19 07:02:33,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2022-11-19 07:02:33,875 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 07:02:33,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-11-19 07:02:33,916 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 07:02:33,921 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 07:02:33,927 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 07:02:33,990 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 07:02:34,018 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 07:02:34,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 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 07:02:34,255 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 07:02:34,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:34,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 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 07:02:34,325 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 07:02:35,399 INFO L217 Elim1Store]: Index analysis took 712 ms [2022-11-19 07:02:39,975 INFO L321 Elim1Store]: treesize reduction 190, result has 18.1 percent of original size [2022-11-19 07:02:39,976 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 9519796 [2022-11-19 07:02:40,999 INFO L217 Elim1Store]: Index analysis took 836 ms [2022-11-19 07:02:41,537 INFO L321 Elim1Store]: treesize reduction 87, result has 5.4 percent of original size [2022-11-19 07:02:41,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 9519772 treesize of output 9519776 [2022-11-19 07:02:50,757 WARN L233 SmtUtils]: Spent 9.10s 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 07:02:50,758 INFO L321 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-19 07:02:50,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1986 treesize of output 1476 [2022-11-19 07:02:51,175 INFO L217 Elim1Store]: Index analysis took 175 ms [2022-11-19 07:03:15,294 WARN L233 SmtUtils]: Spent 24.11s 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 07:03:15,294 INFO L321 Elim1Store]: treesize reduction 266, result has 31.6 percent of original size [2022-11-19 07:03:15,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2005 treesize of output 1834 [2022-11-19 07:03:17,283 INFO L217 Elim1Store]: Index analysis took 1309 ms [2022-11-19 07:03:44,427 WARN L233 SmtUtils]: Spent 26.12s on a formula simplification. DAG size of input: 258 DAG size of output: 156 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:03:44,428 INFO L321 Elim1Store]: treesize reduction 13218, result has 27.3 percent of original size [2022-11-19 07:03:44,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 3622 treesize of output 7921 [2022-11-19 07:03:46,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:46,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 69 [2022-11-19 07:03:46,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:46,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:46,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:03:46,336 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 69 treesize of output 55 [2022-11-19 07:03:47,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:47,582 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 24 treesize of output 14 [2022-11-19 07:03:47,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:03:47,651 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 17 treesize of output 11 [2022-11-19 07:03:51,326 INFO L321 Elim1Store]: treesize reduction 550, result has 14.1 percent of original size [2022-11-19 07:03:51,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 14 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 16 new quantified variables, introduced 18 case distinctions, treesize of input 51016 treesize of output 53256 [2022-11-19 07:03:59,938 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:04:00,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:04:00,616 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 40846 treesize of output 40854 [2022-11-19 07:04:01,708 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:04:09,699 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 45 DAG size of output: 37 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:04:09,700 INFO L321 Elim1Store]: treesize reduction 185, result has 49.9 percent of original size [2022-11-19 07:04:09,701 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 66514 treesize of output 65984 [2022-11-19 07:04:10,849 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 43142 treesize of output 43102 [2022-11-19 07:04:13,022 INFO L321 Elim1Store]: treesize reduction 17, result has 48.5 percent of original size [2022-11-19 07:04:13,024 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 40846 treesize of output 40828 [2022-11-19 07:04:14,017 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 07:04:16,645 INFO L321 Elim1Store]: treesize reduction 45, result has 49.4 percent of original size [2022-11-19 07:04:16,647 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 56608 treesize of output 56496 [2022-11-19 07:04:50,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:50,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:50,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:50,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:51,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,384 INFO L217 Elim1Store]: Index analysis took 5877 ms [2022-11-19 07:04:53,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:53,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 545 treesize of output 4453 [2022-11-19 07:04:53,582 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 07:04:55,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:58,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,366 INFO L217 Elim1Store]: Index analysis took 6092 ms [2022-11-19 07:05:00,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,372 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,376 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:00,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 2247 [2022-11-19 07:05:01,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:01,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:04,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,210 INFO L217 Elim1Store]: Index analysis took 4547 ms [2022-11-19 07:05:05,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,218 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:05,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 2257 [2022-11-19 07:05:05,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:05,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:05,658 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 42 treesize of output 24 [2022-11-19 07:05:06,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:06,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:07,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:08,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:08,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:08,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:09,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,490 INFO L217 Elim1Store]: Index analysis took 3393 ms [2022-11-19 07:05:09,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:09,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 2269 [2022-11-19 07:05:09,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:09,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:09,843 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 44 treesize of output 26 [2022-11-19 07:05:10,169 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:11,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:11,727 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:12,122 INFO L217 Elim1Store]: Index analysis took 1874 ms [2022-11-19 07:05:12,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:12,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:12,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:12,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:12,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:12,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:12,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:12,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:12,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:12,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 16 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 40009 treesize of output 43909 [2022-11-19 07:05:17,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:21,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,436 INFO L217 Elim1Store]: Index analysis took 6705 ms [2022-11-19 07:05:23,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,438 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,442 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:23,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 2215 [2022-11-19 07:05:23,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:23,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:23,907 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 380 treesize of output 194 [2022-11-19 07:05:24,081 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:28,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:28,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:28,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:29,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,300 INFO L217 Elim1Store]: Index analysis took 6055 ms [2022-11-19 07:05:30,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:30,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 507 treesize of output 3942 [2022-11-19 07:05:30,652 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:05:31,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:35,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:35,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,696 INFO L217 Elim1Store]: Index analysis took 5758 ms [2022-11-19 07:05:36,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,700 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:36,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 2247 [2022-11-19 07:05:37,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:37,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:37,199 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 100 treesize of output 54 [2022-11-19 07:05:38,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,539 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,798 INFO L217 Elim1Store]: Index analysis took 1454 ms [2022-11-19 07:05:38,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:05:38,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 16 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 34295 treesize of output 38205 [2022-11-19 07:05:52,266 INFO L217 Elim1Store]: Index analysis took 8432 ms [2022-11-19 07:05:53,567 INFO L321 Elim1Store]: treesize reduction 538, result has 3.8 percent of original size [2022-11-19 07:05:53,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 14 case distinctions, treesize of input 403 treesize of output 2354 [2022-11-19 07:05:54,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:54,008 INFO L217 Elim1Store]: Index analysis took 261 ms [2022-11-19 07:05:54,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:05:54,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 79 [2022-11-19 07:05:54,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:54,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:05:54,805 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 42 treesize of output 24 [2022-11-19 07:05:59,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:01,673 INFO L217 Elim1Store]: Index analysis took 6623 ms [2022-11-19 07:06:02,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 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 316 treesize of output 2350 [2022-11-19 07:06:02,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:03,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:04,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:10,839 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,656 INFO L217 Elim1Store]: Index analysis took 8704 ms [2022-11-19 07:06:11,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:11,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1409 treesize of output 3388 [2022-11-19 07:06:12,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:12,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:12,217 INFO L217 Elim1Store]: Index analysis took 232 ms [2022-11-19 07:06:12,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:06:12,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 1093 treesize of output 919 [2022-11-19 07:06:13,124 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:06:13,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:15,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:18,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:25,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,185 INFO L217 Elim1Store]: Index analysis took 13395 ms [2022-11-19 07:06:27,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,190 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:27,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 573 treesize of output 2471 [2022-11-19 07:06:27,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:27,998 INFO L217 Elim1Store]: Index analysis took 315 ms [2022-11-19 07:06:28,682 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:06:28,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 221 [2022-11-19 07:06:29,084 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:06:30,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:30,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:30,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:32,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:06:32,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,928 INFO L217 Elim1Store]: Index analysis took 3612 ms [2022-11-19 07:06:32,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,931 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,934 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,935 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:06:32,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 349 treesize of output 2287 [2022-11-19 07:06:33,096 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 41 treesize of output 21 [2022-11-19 07:06:33,542 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:07:58,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:00,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:08:01,185 INFO L217 Elim1Store]: Index analysis took 3043 ms [2022-11-19 07:08:01,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 15 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 1905 treesize of output 16050 [2022-11-19 07:08:03,173 INFO L217 Elim1Store]: Index analysis took 670 ms [2022-11-19 07:09:50,030 WARN L233 SmtUtils]: Spent 1.78m on a formula simplification. DAG size of input: 222 DAG size of output: 42 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:09:50,032 INFO L321 Elim1Store]: treesize reduction 1365, result has 5.7 percent of original size [2022-11-19 07:09:50,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 38 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 33 new quantified variables, introduced 68 case distinctions, treesize of input 5645 treesize of output 94048 [2022-11-19 07:11:57,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:11:57,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:11:57,917 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) 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.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.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 07:11:57,921 INFO L158 Benchmark]: Toolchain (without parser) took 631241.60ms. Allocated memory was 136.3MB in the beginning and 612.4MB in the end (delta: 476.1MB). Free memory was 97.4MB in the beginning and 302.7MB in the end (delta: -205.3MB). Peak memory consumption was 395.9MB. Max. memory is 16.1GB. [2022-11-19 07:11:57,922 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:11:57,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 806.59ms. Allocated memory is still 136.3MB. Free memory was 97.3MB in the beginning and 90.8MB in the end (delta: 6.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:11:57,922 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.74ms. Allocated memory is still 136.3MB. Free memory was 90.8MB in the beginning and 83.3MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:11:57,922 INFO L158 Benchmark]: Boogie Preprocessor took 93.27ms. Allocated memory is still 136.3MB. Free memory was 83.3MB in the beginning and 75.5MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:11:57,922 INFO L158 Benchmark]: RCFGBuilder took 2423.51ms. Allocated memory was 136.3MB in the beginning and 182.5MB in the end (delta: 46.1MB). Free memory was 75.5MB in the beginning and 105.8MB in the end (delta: -30.3MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2022-11-19 07:11:57,922 INFO L158 Benchmark]: TraceAbstraction took 627794.14ms. Allocated memory was 182.5MB in the beginning and 612.4MB in the end (delta: 429.9MB). Free memory was 105.8MB in the beginning and 302.7MB in the end (delta: -196.8MB). Peak memory consumption was 358.4MB. Max. memory is 16.1GB. [2022-11-19 07:11:57,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 136.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 806.59ms. Allocated memory is still 136.3MB. Free memory was 97.3MB in the beginning and 90.8MB in the end (delta: 6.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 116.74ms. Allocated memory is still 136.3MB. Free memory was 90.8MB in the beginning and 83.3MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.27ms. Allocated memory is still 136.3MB. Free memory was 83.3MB in the beginning and 75.5MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2423.51ms. Allocated memory was 136.3MB in the beginning and 182.5MB in the end (delta: 46.1MB). Free memory was 75.5MB in the beginning and 105.8MB in the end (delta: -30.3MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. * TraceAbstraction took 627794.14ms. Allocated memory was 182.5MB in the beginning and 612.4MB in the end (delta: 429.9MB). Free memory was 105.8MB in the beginning and 302.7MB in the end (delta: -196.8MB). Peak memory consumption was 358.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:11:58,129 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-19 07:11:58,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 --- 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 07:12:00,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:12:00,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:12:00,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:12:00,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:12:00,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:12:00,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:12:00,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:12:00,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:12:00,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:12:00,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:12:00,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:12:00,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:12:00,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:12:00,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:12:00,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:12:00,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:12:00,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:12:00,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:12:00,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:12:00,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:12:00,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:12:00,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:12:00,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:12:00,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:12:00,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:12:00,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:12:00,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:12:00,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:12:00,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:12:00,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:12:00,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:12:00,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:12:00,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:12:00,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:12:00,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:12:00,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:12:00,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:12:00,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:12:00,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:12:00,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:12:00,260 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:12:00,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:12:00,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:12:00,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:12:00,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:12:00,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:12:00,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:12:00,309 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:12:00,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:12:00,309 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:12:00,310 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:12:00,311 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:12:00,311 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:12:00,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:12:00,313 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:12:00,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:12:00,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:12:00,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:12:00,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:12:00,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:12:00,314 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:12:00,315 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:12:00,315 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:12:00,315 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:12:00,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:12:00,315 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:12:00,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:12:00,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:12:00,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:12:00,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:12:00,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:12:00,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:12:00,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:12:00,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:12:00,318 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:12:00,318 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:00,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:12:00,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:12:00,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:12:00,319 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb2eb63835edf753d5a467feb7a4cdd6d105155177d7d0cab8bf29c1b74dbaf6 [2022-11-19 07:12:00,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:12:00,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:12:00,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:12:00,788 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:12:00,789 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:12:00,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2022-11-19 07:12:00,856 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/data/0b96400dc/717ebf70acc04213ae1f92a53a347f79/FLAG4f659c423 [2022-11-19 07:12:01,536 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:12:01,536 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i [2022-11-19 07:12:01,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/data/0b96400dc/717ebf70acc04213ae1f92a53a347f79/FLAG4f659c423 [2022-11-19 07:12:01,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/data/0b96400dc/717ebf70acc04213ae1f92a53a347f79 [2022-11-19 07:12:01,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:12:01,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:12:01,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:12:01,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:12:01,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:12:01,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:12:01" (1/1) ... [2022-11-19 07:12:01,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@680af7d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:01, skipping insertion in model container [2022-11-19 07:12:01,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:12:01" (1/1) ... [2022-11-19 07:12:01,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:12:01,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:12:02,298 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2022-11-19 07:12:02,480 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2022-11-19 07:12:02,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:12:02,505 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:12:02,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:12:02,560 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2022-11-19 07:12:02,644 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2022-11-19 07:12:02,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:12:02,652 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:12:02,679 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[33021,33034] [2022-11-19 07:12:02,719 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_5b2ff24b-ef1c-43c7-95a7-78be83995519/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-1.i[44590,44603] [2022-11-19 07:12:02,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:12:02,769 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:12:02,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02 WrapperNode [2022-11-19 07:12:02,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:12:02,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:12:02,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:12:02,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:12:02,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:02,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:02,869 INFO L138 Inliner]: procedures = 180, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1022 [2022-11-19 07:12:02,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:12:02,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:12:02,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:12:02,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:12:02,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:02,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:02,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:02,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:03,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:03,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:03,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:03,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:03,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:12:03,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:12:03,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:12:03,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:12:03,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (1/1) ... [2022-11-19 07:12:03,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:12:03,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:03,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:12:03,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:12:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:12:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:12:03,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:12:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:12:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:12:03,176 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:12:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:12:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:12:03,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:12:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:12:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:12:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:12:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:12:03,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:12:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:12:03,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:12:03,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:12:03,470 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:12:03,472 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:12:10,238 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:12:10,246 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:12:10,246 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 07:12:10,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:12:10 BoogieIcfgContainer [2022-11-19 07:12:10,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:12:10,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:12:10,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:12:10,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:12:10,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:12:01" (1/3) ... [2022-11-19 07:12:10,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797fdcbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:12:10, skipping insertion in model container [2022-11-19 07:12:10,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:02" (2/3) ... [2022-11-19 07:12:10,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797fdcbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:12:10, skipping insertion in model container [2022-11-19 07:12:10,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:12:10" (3/3) ... [2022-11-19 07:12:10,257 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-1.i [2022-11-19 07:12:10,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:12:10,275 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:12:10,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:12:10,335 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;@57494dd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:12:10,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:12:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 200 states, 187 states have (on average 1.695187165775401) internal successors, (317), 194 states have internal predecessors, (317), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:12:10,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:12:10,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:10,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:10,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:10,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1311467126, now seen corresponding path program 1 times [2022-11-19 07:12:10,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:10,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510497380] [2022-11-19 07:12:10,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:10,369 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 07:12:10,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:10,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:10,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:10,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:12:10,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:10,613 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 07:12:10,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:10,616 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:10,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510497380] [2022-11-19 07:12:10,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510497380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:10,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:10,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:12:10,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936167780] [2022-11-19 07:12:10,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:10,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:12:10,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:10,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:12:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:12:10,686 INFO L87 Difference]: Start difference. First operand has 200 states, 187 states have (on average 1.695187165775401) internal successors, (317), 194 states have internal predecessors, (317), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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 07:12:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:10,779 INFO L93 Difference]: Finished difference Result 398 states and 669 transitions. [2022-11-19 07:12:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:12:10,783 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 07:12:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:10,803 INFO L225 Difference]: With dead ends: 398 [2022-11-19 07:12:10,804 INFO L226 Difference]: Without dead ends: 196 [2022-11-19 07:12:10,810 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 07:12:10,814 INFO L413 NwaCegarLoop]: 264 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, 264 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 07:12:10,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:12:10,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-19 07:12:10,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-19 07:12:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 184 states have (on average 1.326086956521739) internal successors, (244), 190 states have internal predecessors, (244), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:12:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2022-11-19 07:12:10,910 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 9 [2022-11-19 07:12:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:10,911 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2022-11-19 07:12:10,912 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 07:12:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2022-11-19 07:12:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:12:10,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:10,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:10,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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)] Ended with exit code 0 [2022-11-19 07:12:11,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:11,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:11,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:11,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1760313746, now seen corresponding path program 1 times [2022-11-19 07:12:11,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:11,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945983980] [2022-11-19 07:12:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:11,138 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 07:12:11,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:11,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:11,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:11,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:12:11,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:11,454 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 07:12:11,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:11,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:11,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945983980] [2022-11-19 07:12:11,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945983980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:11,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:11,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:12:11,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553424561] [2022-11-19 07:12:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:12:11,459 INFO L87 Difference]: Start difference. First operand 196 states and 260 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:12:13,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:16,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:17,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:17,042 INFO L93 Difference]: Finished difference Result 498 states and 662 transitions. [2022-11-19 07:12:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:12:17,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 07:12:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:17,060 INFO L225 Difference]: With dead ends: 498 [2022-11-19 07:12:17,060 INFO L226 Difference]: Without dead ends: 302 [2022-11-19 07:12:17,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:12:17,062 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 140 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:17,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 695 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-19 07:12:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-19 07:12:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 299. [2022-11-19 07:12:17,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 287 states have (on average 1.3275261324041812) internal successors, (381), 293 states have internal predecessors, (381), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:12:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 397 transitions. [2022-11-19 07:12:17,098 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 397 transitions. Word has length 14 [2022-11-19 07:12:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:17,099 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 397 transitions. [2022-11-19 07:12:17,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:12:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 397 transitions. [2022-11-19 07:12:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:12:17,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:17,102 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 07:12:17,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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)] Ended with exit code 0 [2022-11-19 07:12:17,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:17,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:17,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:17,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1831692255, now seen corresponding path program 1 times [2022-11-19 07:12:17,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:17,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232955550] [2022-11-19 07:12:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:17,317 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 07:12:17,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:17,318 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:17,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:17,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:12:17,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:17,585 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 07:12:17,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:17,586 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:17,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232955550] [2022-11-19 07:12:17,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232955550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:17,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:17,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:12:17,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115067089] [2022-11-19 07:12:17,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:17,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:17,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:12:17,589 INFO L87 Difference]: Start difference. First operand 299 states and 397 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 07:12:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:17,762 INFO L93 Difference]: Finished difference Result 497 states and 670 transitions. [2022-11-19 07:12:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:12:17,762 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 07:12:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:17,765 INFO L225 Difference]: With dead ends: 497 [2022-11-19 07:12:17,765 INFO L226 Difference]: Without dead ends: 332 [2022-11-19 07:12:17,766 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 07:12:17,768 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 120 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:17,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 624 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:12:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-19 07:12:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 305. [2022-11-19 07:12:17,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 293 states have (on average 1.266211604095563) internal successors, (371), 299 states have internal predecessors, (371), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:12:17,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 387 transitions. [2022-11-19 07:12:17,791 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 387 transitions. Word has length 44 [2022-11-19 07:12:17,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:17,792 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 387 transitions. [2022-11-19 07:12:17,792 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 07:12:17,792 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 387 transitions. [2022-11-19 07:12:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:12:17,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:17,794 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 07:12:17,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:18,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:18,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:18,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:18,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1557793941, now seen corresponding path program 1 times [2022-11-19 07:12:18,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:18,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309112518] [2022-11-19 07:12:18,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:18,019 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 07:12:18,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:18,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:18,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:18,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:12:18,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:18,481 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 07:12:18,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:18,481 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:18,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309112518] [2022-11-19 07:12:18,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309112518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:18,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:18,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:12:18,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047318532] [2022-11-19 07:12:18,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:18,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:12:18,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:12:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:12:18,488 INFO L87 Difference]: Start difference. First operand 305 states and 387 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 07:12:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:18,667 INFO L93 Difference]: Finished difference Result 489 states and 624 transitions. [2022-11-19 07:12:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:12:18,668 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 07:12:18,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:18,671 INFO L225 Difference]: With dead ends: 489 [2022-11-19 07:12:18,671 INFO L226 Difference]: Without dead ends: 318 [2022-11-19 07:12:18,674 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 07:12:18,681 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 96 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:18,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 846 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:12:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-19 07:12:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 293. [2022-11-19 07:12:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 281 states have (on average 1.2491103202846976) internal successors, (351), 287 states have internal predecessors, (351), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:12:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 367 transitions. [2022-11-19 07:12:18,714 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 367 transitions. Word has length 44 [2022-11-19 07:12:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:18,715 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 367 transitions. [2022-11-19 07:12:18,720 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 07:12:18,721 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 367 transitions. [2022-11-19 07:12:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:12:18,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:18,727 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 07:12:18,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:18,947 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:18,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1299628503, now seen corresponding path program 1 times [2022-11-19 07:12:18,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:18,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944826098] [2022-11-19 07:12:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:18,949 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 07:12:18,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:18,950 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:18,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:19,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:12:19,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:19,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:12:19,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:12:19,212 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:12:19,224 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 30 treesize of output 39 [2022-11-19 07:12:19,304 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:12:19,305 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 70 treesize of output 26 [2022-11-19 07:12:19,330 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 07:12:19,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:19,331 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:19,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944826098] [2022-11-19 07:12:19,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944826098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:19,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:19,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:12:19,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138020653] [2022-11-19 07:12:19,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:19,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:12:19,335 INFO L87 Difference]: Start difference. First operand 293 states and 367 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 07:12:22,866 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 07:12:26,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:26,396 INFO L93 Difference]: Finished difference Result 548 states and 684 transitions. [2022-11-19 07:12:26,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:12:26,397 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 07:12:26,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:26,399 INFO L225 Difference]: With dead ends: 548 [2022-11-19 07:12:26,399 INFO L226 Difference]: Without dead ends: 388 [2022-11-19 07:12:26,400 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 07:12:26,400 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 144 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:26,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 624 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-19 07:12:26,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-19 07:12:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 292. [2022-11-19 07:12:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 280 states have (on average 1.2464285714285714) internal successors, (349), 286 states have internal predecessors, (349), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:12:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 365 transitions. [2022-11-19 07:12:26,430 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 365 transitions. Word has length 44 [2022-11-19 07:12:26,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:26,430 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 365 transitions. [2022-11-19 07:12:26,430 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 07:12:26,430 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 365 transitions. [2022-11-19 07:12:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 07:12:26,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:26,432 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] [2022-11-19 07:12:26,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:26,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:26,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:26,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1888842752, now seen corresponding path program 1 times [2022-11-19 07:12:26,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:26,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382650622] [2022-11-19 07:12:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:26,650 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 07:12:26,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:26,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:26,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:27,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:12:27,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:12:27,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:27,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:27,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382650622] [2022-11-19 07:12:27,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382650622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:27,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:27,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:12:27,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821592637] [2022-11-19 07:12:27,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:27,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:27,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:27,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:27,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:12:27,517 INFO L87 Difference]: Start difference. First operand 292 states and 365 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:12:27,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:27,670 INFO L93 Difference]: Finished difference Result 583 states and 735 transitions. [2022-11-19 07:12:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:12:27,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2022-11-19 07:12:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:27,673 INFO L225 Difference]: With dead ends: 583 [2022-11-19 07:12:27,673 INFO L226 Difference]: Without dead ends: 300 [2022-11-19 07:12:27,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 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 07:12:27,675 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 212 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 459 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 07:12:27,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 459 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:12:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-19 07:12:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2022-11-19 07:12:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 286 states have (on average 1.1853146853146854) internal successors, (339), 292 states have internal predecessors, (339), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:12:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 355 transitions. [2022-11-19 07:12:27,698 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 355 transitions. Word has length 81 [2022-11-19 07:12:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:27,698 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 355 transitions. [2022-11-19 07:12:27,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:12:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 355 transitions. [2022-11-19 07:12:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 07:12:27,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:27,701 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] [2022-11-19 07:12:27,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:27,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:27,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash 822747892, now seen corresponding path program 1 times [2022-11-19 07:12:27,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:27,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680705277] [2022-11-19 07:12:27,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:27,917 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 07:12:27,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:27,923 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:27,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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)] Waiting until timeout for monitored process [2022-11-19 07:12:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:28,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:12:28,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:28,743 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 07:12:28,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:28,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:28,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680705277] [2022-11-19 07:12:28,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680705277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:28,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:28,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:12:28,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101078127] [2022-11-19 07:12:28,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:28,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:28,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:28,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:28,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:12:28,747 INFO L87 Difference]: Start difference. First operand 298 states and 355 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:12:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:28,830 INFO L93 Difference]: Finished difference Result 554 states and 667 transitions. [2022-11-19 07:12:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:12:28,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2022-11-19 07:12:28,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:28,833 INFO L225 Difference]: With dead ends: 554 [2022-11-19 07:12:28,833 INFO L226 Difference]: Without dead ends: 301 [2022-11-19 07:12:28,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 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 07:12:28,835 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 2 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:28,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 689 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:12:28,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-19 07:12:28,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-19 07:12:28,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 288 states have (on average 1.1875) internal successors, (342), 295 states have internal predecessors, (342), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 07:12:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 359 transitions. [2022-11-19 07:12:28,860 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 359 transitions. Word has length 81 [2022-11-19 07:12:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:28,861 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 359 transitions. [2022-11-19 07:12:28,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:12:28,861 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 359 transitions. [2022-11-19 07:12:28,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:12:28,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:28,863 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] [2022-11-19 07:12:28,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:29,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:29,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:29,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash -473646062, now seen corresponding path program 1 times [2022-11-19 07:12:29,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:29,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642854686] [2022-11-19 07:12:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:29,081 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 07:12:29,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:29,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:29,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:29,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:29,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:29,941 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 07:12:29,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:30,104 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 07:12:30,104 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:30,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642854686] [2022-11-19 07:12:30,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642854686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:30,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1735284388] [2022-11-19 07:12:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:30,105 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:30,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:30,111 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:30,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 07:12:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:31,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:31,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:31,590 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 07:12:31,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:31,654 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 07:12:31,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1735284388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:31,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994520225] [2022-11-19 07:12:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:31,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:31,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:31,663 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:31,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:12:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:32,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:12:32,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:32,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:12:32,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:12:32,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:12:32,448 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 30 treesize of output 39 [2022-11-19 07:12:32,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:12:32,540 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 70 treesize of output 26 [2022-11-19 07:12:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:12:32,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:32,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994520225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:32,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-19 07:12:32,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2022-11-19 07:12:32,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455543486] [2022-11-19 07:12:32,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:32,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:12:32,577 INFO L87 Difference]: Start difference. First operand 301 states and 359 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:12:36,337 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 07:12:38,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:38,807 INFO L93 Difference]: Finished difference Result 403 states and 488 transitions. [2022-11-19 07:12:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:12:38,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2022-11-19 07:12:38,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:38,812 INFO L225 Difference]: With dead ends: 403 [2022-11-19 07:12:38,812 INFO L226 Difference]: Without dead ends: 382 [2022-11-19 07:12:38,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:12:38,813 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 117 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:38,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 612 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-19 07:12:38,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-19 07:12:38,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 303. [2022-11-19 07:12:38,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 290 states have (on average 1.186206896551724) internal successors, (344), 297 states have internal predecessors, (344), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 07:12:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 361 transitions. [2022-11-19 07:12:38,848 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 361 transitions. Word has length 83 [2022-11-19 07:12:38,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:38,853 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 361 transitions. [2022-11-19 07:12:38,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:12:38,853 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 361 transitions. [2022-11-19 07:12:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 07:12:38,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:38,860 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 07:12:38,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:39,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:39,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:39,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:39,480 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:39,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:39,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1188083589, now seen corresponding path program 1 times [2022-11-19 07:12:39,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:39,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345427572] [2022-11-19 07:12:39,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:39,481 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 07:12:39,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:39,482 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:39,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 (12)] Waiting until timeout for monitored process [2022-11-19 07:12:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:40,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:40,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:40,539 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 07:12:40,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:40,675 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 07:12:40,676 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:40,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345427572] [2022-11-19 07:12:40,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345427572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:40,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [543054056] [2022-11-19 07:12:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:40,677 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:40,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:40,679 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:40,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-19 07:12:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:41,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:12:41,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:42,124 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 07:12:42,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:42,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [543054056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:42,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:12:42,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 07:12:42,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681554770] [2022-11-19 07:12:42,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:42,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:42,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:42,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:42,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:12:42,126 INFO L87 Difference]: Start difference. First operand 303 states and 361 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 07:12:44,576 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 07:12:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:46,143 INFO L93 Difference]: Finished difference Result 668 states and 816 transitions. [2022-11-19 07:12:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:12:46,144 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 07:12:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:46,147 INFO L225 Difference]: With dead ends: 668 [2022-11-19 07:12:46,147 INFO L226 Difference]: Without dead ends: 410 [2022-11-19 07:12:46,148 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 07:12:46,148 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 412 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:46,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 447 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-11-19 07:12:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-19 07:12:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 378. [2022-11-19 07:12:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 365 states have (on average 1.189041095890411) internal successors, (434), 372 states have internal predecessors, (434), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 07:12:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 451 transitions. [2022-11-19 07:12:46,182 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 451 transitions. Word has length 113 [2022-11-19 07:12:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:46,183 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 451 transitions. [2022-11-19 07:12:46,183 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 07:12:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 451 transitions. [2022-11-19 07:12:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-19 07:12:46,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:46,185 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 07:12:46,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:46,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:46,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:46,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2079236494, now seen corresponding path program 1 times [2022-11-19 07:12:46,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:46,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9101713] [2022-11-19 07:12:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:46,601 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 07:12:46,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:46,603 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:46,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 (14)] Waiting until timeout for monitored process [2022-11-19 07:12:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:47,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:47,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:47,579 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 07:12:47,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:47,721 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 07:12:47,721 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:47,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9101713] [2022-11-19 07:12:47,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9101713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:47,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1159709013] [2022-11-19 07:12:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:47,722 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:47,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:47,723 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:47,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-19 07:12:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:49,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:49,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:49,310 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 07:12:49,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:49,387 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 07:12:49,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1159709013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:49,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919399805] [2022-11-19 07:12:49,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:49,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:49,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:49,390 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:49,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 07:12:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:50,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:50,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:50,365 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 07:12:50,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:50,516 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 07:12:50,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919399805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:50,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:12:50,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2022-11-19 07:12:50,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910287221] [2022-11-19 07:12:50,517 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:12:50,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:12:50,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:50,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:12:50,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:12:50,519 INFO L87 Difference]: Start difference. First operand 378 states and 451 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 07:12:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:51,070 INFO L93 Difference]: Finished difference Result 723 states and 875 transitions. [2022-11-19 07:12:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:12:51,071 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 07:12:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:51,073 INFO L225 Difference]: With dead ends: 723 [2022-11-19 07:12:51,074 INFO L226 Difference]: Without dead ends: 393 [2022-11-19 07:12:51,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:12:51,075 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 63 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:51,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1361 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:12:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-19 07:12:51,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2022-11-19 07:12:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 375 states have (on average 1.2053333333333334) internal successors, (452), 382 states have internal predecessors, (452), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 07:12:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 469 transitions. [2022-11-19 07:12:51,109 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 469 transitions. Word has length 120 [2022-11-19 07:12:51,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:51,109 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 469 transitions. [2022-11-19 07:12:51,109 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 07:12:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 469 transitions. [2022-11-19 07:12:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-19 07:12:51,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:51,111 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 07:12:51,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 (14)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:51,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:51,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2022-11-19 07:12:51,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:51,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:51,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:51,728 INFO L85 PathProgramCache]: Analyzing trace with hash -180525716, now seen corresponding path program 2 times [2022-11-19 07:12:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:12:51,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1101372587] [2022-11-19 07:12:51,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:12:51,729 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 07:12:51,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:12:51,730 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:12:51,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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)] Waiting until timeout for monitored process [2022-11-19 07:12:52,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:12:52,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:12:52,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:12:52,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:53,085 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 07:12:53,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:53,470 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 07:12:53,470 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:12:53,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1101372587] [2022-11-19 07:12:53,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1101372587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:53,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [522473568] [2022-11-19 07:12:53,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:12:53,471 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:12:53,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:12:53,486 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:12:53,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-19 07:12:55,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:12:55,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:12:55,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:12:55,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:55,745 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 07:12:55,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:55,867 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 07:12:55,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [522473568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:55,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934211017] [2022-11-19 07:12:55,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:12:55,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:55,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:55,870 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:55,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-19 07:12:57,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:12:57,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:12:57,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:12:57,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:57,315 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 07:12:57,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:57,728 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 07:12:57,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934211017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:57,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:12:57,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-19 07:12:57,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413456373] [2022-11-19 07:12:57,729 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:12:57,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:12:57,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:12:57,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:12:57,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:12:57,732 INFO L87 Difference]: Start difference. First operand 389 states and 469 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 07:12:59,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:59,401 INFO L93 Difference]: Finished difference Result 741 states and 900 transitions. [2022-11-19 07:12:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:12:59,402 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 07:12:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:59,404 INFO L225 Difference]: With dead ends: 741 [2022-11-19 07:12:59,405 INFO L226 Difference]: Without dead ends: 402 [2022-11-19 07:12:59,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:12:59,407 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 78 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:59,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2075 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:12:59,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-19 07:12:59,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 396. [2022-11-19 07:12:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 382 states have (on average 1.2015706806282722) internal successors, (459), 389 states have internal predecessors, (459), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-19 07:12:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 476 transitions. [2022-11-19 07:12:59,463 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 476 transitions. Word has length 126 [2022-11-19 07:12:59,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:59,463 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 476 transitions. [2022-11-19 07:12:59,464 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 07:12:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 476 transitions. [2022-11-19 07:12:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 07:12:59,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:59,466 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 07:12:59,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2022-11-19 07:12:59,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:59,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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)] Ended with exit code 0 [2022-11-19 07:13:00,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:13:00,081 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:00,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:00,082 INFO L85 PathProgramCache]: Analyzing trace with hash -493627384, now seen corresponding path program 3 times [2022-11-19 07:13:00,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:13:00,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391426759] [2022-11-19 07:13:00,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:13:00,083 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 07:13:00,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:13:00,084 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 07:13:00,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/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 (20)] Waiting until timeout for monitored process [2022-11-19 07:13:04,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:13:04,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:13:05,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:13:05,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:05,139 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 07:13:05,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:05,615 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 07:13:05,615 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:13:05,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391426759] [2022-11-19 07:13:05,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391426759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:05,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [661750341] [2022-11-19 07:13:05,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:13:05,616 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:13:05,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:13:05,619 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:13:05,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-19 07:15:48,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 07:15:48,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:15:48,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:15:48,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:15:48,346 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 07:15:48,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:15:48,522 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 07:15:48,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [661750341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:15:48,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175996094] [2022-11-19 07:15:48,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:15:48,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:15:48,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:15:48,528 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:15:48,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2ff24b-ef1c-43c7-95a7-78be83995519/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process