./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_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_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:56:13,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:56:13,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:56:13,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:56:13,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:56:13,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:56:13,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:56:13,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:56:13,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:56:13,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:56:13,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:56:13,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:56:13,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:56:13,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:56:13,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:56:13,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:56:13,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:56:13,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:56:13,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:56:13,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:56:13,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:56:13,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:56:13,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:56:13,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:56:13,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:56:13,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:56:13,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:56:13,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:56:13,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:56:13,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:56:13,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:56:13,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:56:13,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:56:13,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:56:13,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:56:13,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:56:13,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:56:13,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:56:13,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:56:13,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:56:13,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:56:13,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:56:13,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:56:13,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:56:13,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:56:13,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:56:13,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:56:13,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:56:13,702 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:56:13,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:56:13,703 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:56:13,703 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:56:13,704 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:56:13,704 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:56:13,704 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:56:13,704 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:56:13,705 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:56:13,705 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:56:13,705 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:56:13,706 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:56:13,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:56:13,707 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:56:13,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:56:13,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:56:13,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:56:13,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:56:13,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:56:13,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:56:13,709 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:56:13,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:56:13,709 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:56:13,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:56:13,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:56:13,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:56:13,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:56:13,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:56:13,711 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:56:13,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:56:13,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:56:13,712 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:56:13,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:56:13,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:56:13,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:56:13,713 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 [2022-11-19 06:56:13,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:56:13,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:56:13,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:56:13,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:56:13,982 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:56:13,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2022-11-19 06:56:14,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/data/8e8c82779/c3b13d552a9e43b196ab47f2b3695f8a/FLAGd7f746730 [2022-11-19 06:56:14,886 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:56:14,887 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2022-11-19 06:56:14,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/data/8e8c82779/c3b13d552a9e43b196ab47f2b3695f8a/FLAGd7f746730 [2022-11-19 06:56:15,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/data/8e8c82779/c3b13d552a9e43b196ab47f2b3695f8a [2022-11-19 06:56:15,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:56:15,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:56:15,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:56:15,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:56:15,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:56:15,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:56:15" (1/1) ... [2022-11-19 06:56:15,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f2926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:15, skipping insertion in model container [2022-11-19 06:56:15,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:56:15" (1/1) ... [2022-11-19 06:56:15,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:56:15,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:56:15,756 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2022-11-19 06:56:15,955 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2022-11-19 06:56:15,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:56:15,974 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:56:16,001 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2022-11-19 06:56:16,097 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2022-11-19 06:56:16,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:56:16,148 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:56:16,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16 WrapperNode [2022-11-19 06:56:16,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:56:16,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:56:16,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:56:16,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:56:16,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,288 INFO L138 Inliner]: procedures = 177, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1022 [2022-11-19 06:56:16,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:56:16,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:56:16,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:56:16,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:56:16,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,370 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:56:16,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:56:16,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:56:16,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:56:16,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (1/1) ... [2022-11-19 06:56:16,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:56:16,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:16,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:56:16,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:56:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:56:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:56:16,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:56:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:56:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:56:16,482 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:56:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:56:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:56:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:56:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:56:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 06:56:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:56:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:56:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:56:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:56:16,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:56:16,714 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:56:16,728 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:56:18,461 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:56:18,977 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:56:18,977 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 06:56:18,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:56:18 BoogieIcfgContainer [2022-11-19 06:56:18,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:56:18,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:56:18,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:56:18,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:56:18,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:56:15" (1/3) ... [2022-11-19 06:56:18,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcfad71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:56:18, skipping insertion in model container [2022-11-19 06:56:18,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:16" (2/3) ... [2022-11-19 06:56:18,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcfad71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:56:18, skipping insertion in model container [2022-11-19 06:56:18,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:56:18" (3/3) ... [2022-11-19 06:56:18,992 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test3-1.i [2022-11-19 06:56:19,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:56:19,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 06:56:19,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:56:19,076 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;@69db611, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:56:19,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 06:56:19,085 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 06:56:19,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:56:19,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:19,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:19,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:19,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1898435451, now seen corresponding path program 1 times [2022-11-19 06:56:19,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:19,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282064604] [2022-11-19 06:56:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:19,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:19,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:19,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282064604] [2022-11-19 06:56:19,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282064604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:19,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:19,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:56:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467056833] [2022-11-19 06:56:19,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:19,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:56:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:19,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:56:19,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:56:19,395 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 06:56:19,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:19,858 INFO L93 Difference]: Finished difference Result 245 states and 432 transitions. [2022-11-19 06:56:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:56:19,865 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 06:56:19,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:19,874 INFO L225 Difference]: With dead ends: 245 [2022-11-19 06:56:19,874 INFO L226 Difference]: Without dead ends: 122 [2022-11-19 06:56:19,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:56:19,881 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 06:56:19,882 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 06:56:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-19 06:56:19,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-19 06:56:19,926 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 06:56:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2022-11-19 06:56:19,930 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 8 [2022-11-19 06:56:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:19,931 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2022-11-19 06:56:19,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:56:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2022-11-19 06:56:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 06:56:19,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:19,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:19,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:56:19,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:19,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:19,934 INFO L85 PathProgramCache]: Analyzing trace with hash -94655351, now seen corresponding path program 1 times [2022-11-19 06:56:19,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:19,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477855516] [2022-11-19 06:56:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:19,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:20,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:20,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477855516] [2022-11-19 06:56:20,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477855516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:20,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:20,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:56:20,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750809301] [2022-11-19 06:56:20,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:20,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:56:20,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:20,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:56:20,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:56:20,165 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 06:56:22,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:56:22,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:22,944 INFO L93 Difference]: Finished difference Result 258 states and 326 transitions. [2022-11-19 06:56:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:56:22,949 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 06:56:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:22,952 INFO L225 Difference]: With dead ends: 258 [2022-11-19 06:56:22,952 INFO L226 Difference]: Without dead ends: 189 [2022-11-19 06:56:22,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:56:22,954 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 73 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:22,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 355 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 06:56:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-19 06:56:22,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 124. [2022-11-19 06:56:22,975 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 06:56:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2022-11-19 06:56:22,976 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 13 [2022-11-19 06:56:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:22,976 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2022-11-19 06:56:22,977 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 06:56:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2022-11-19 06:56:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-19 06:56:22,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:22,978 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 06:56:22,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:56:22,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash 339208180, now seen corresponding path program 1 times [2022-11-19 06:56:22,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:22,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701688861] [2022-11-19 06:56:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:22,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:23,133 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:56:23,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539617235] [2022-11-19 06:56:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:23,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:23,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:23,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:23,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:56:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:23,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:56:23,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:24,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:56:24,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:24,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701688861] [2022-11-19 06:56:24,083 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:56:24,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539617235] [2022-11-19 06:56:24,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539617235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:24,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:24,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:56:24,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984083525] [2022-11-19 06:56:24,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:24,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:56:24,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:56:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:56:24,086 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 06:56:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:25,383 INFO L93 Difference]: Finished difference Result 304 states and 377 transitions. [2022-11-19 06:56:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:56:25,388 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 06:56:25,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:25,392 INFO L225 Difference]: With dead ends: 304 [2022-11-19 06:56:25,393 INFO L226 Difference]: Without dead ends: 183 [2022-11-19 06:56:25,395 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 06:56:25,396 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 58 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:25,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 278 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-19 06:56:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-19 06:56:25,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 167. [2022-11-19 06:56:25,427 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 06:56:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2022-11-19 06:56:25,429 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 37 [2022-11-19 06:56:25,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:25,436 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2022-11-19 06:56:25,436 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 06:56:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2022-11-19 06:56:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 06:56:25,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:25,439 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 06:56:25,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:25,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:25,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:25,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:25,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1571641394, now seen corresponding path program 1 times [2022-11-19 06:56:25,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:25,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826895489] [2022-11-19 06:56:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:25,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:25,736 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:56:25,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131738039] [2022-11-19 06:56:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:25,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:25,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:25,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:25,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:56:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:26,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:56:26,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:26,477 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 06:56:26,513 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 06:56:26,526 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 06:56:26,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:56:26,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:26,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826895489] [2022-11-19 06:56:26,527 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:56:26,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131738039] [2022-11-19 06:56:26,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131738039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:26,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:26,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:56:26,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914155701] [2022-11-19 06:56:26,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:26,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:56:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:26,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:56:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:56:26,534 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 06:56:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:28,588 INFO L93 Difference]: Finished difference Result 231 states and 285 transitions. [2022-11-19 06:56:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:56:28,593 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 06:56:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:28,594 INFO L225 Difference]: With dead ends: 231 [2022-11-19 06:56:28,594 INFO L226 Difference]: Without dead ends: 212 [2022-11-19 06:56:28,595 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 06:56:28,596 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 47 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:28,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 354 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-19 06:56:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-19 06:56:28,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2022-11-19 06:56:28,610 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 06:56:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2022-11-19 06:56:28,612 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 50 [2022-11-19 06:56:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:28,612 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2022-11-19 06:56:28,613 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 06:56:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2022-11-19 06:56:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 06:56:28,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:28,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:28,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:28,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:28,823 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:28,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2144578966, now seen corresponding path program 1 times [2022-11-19 06:56:28,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:28,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197074516] [2022-11-19 06:56:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:28,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:28,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:56:28,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339520162] [2022-11-19 06:56:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:28,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:28,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:28,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:28,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:56:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:29,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:56:29,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:56:29,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:56:29,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:29,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197074516] [2022-11-19 06:56:29,657 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:56:29,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339520162] [2022-11-19 06:56:29,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339520162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:29,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:29,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:56:29,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727653772] [2022-11-19 06:56:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:29,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:56:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:56:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:56:29,660 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 06:56:30,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:30,602 INFO L93 Difference]: Finished difference Result 395 states and 492 transitions. [2022-11-19 06:56:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:56:30,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-19 06:56:30,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:30,604 INFO L225 Difference]: With dead ends: 395 [2022-11-19 06:56:30,605 INFO L226 Difference]: Without dead ends: 242 [2022-11-19 06:56:30,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:56:30,607 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 260 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:30,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 290 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 06:56:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-19 06:56:30,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 214. [2022-11-19 06:56:30,628 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 06:56:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2022-11-19 06:56:30,630 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 57 [2022-11-19 06:56:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:30,630 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2022-11-19 06:56:30,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:56:30,631 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2022-11-19 06:56:30,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 06:56:30,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:30,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:30,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:30,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:30,842 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2121750984, now seen corresponding path program 1 times [2022-11-19 06:56:30,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:30,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452814433] [2022-11-19 06:56:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:30,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:30,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:56:30,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435610464] [2022-11-19 06:56:30,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:30,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:30,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:30,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:30,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:56:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:45,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:56:45,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:45,092 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 06:56:45,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:56:45,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:45,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452814433] [2022-11-19 06:56:45,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:56:45,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435610464] [2022-11-19 06:56:45,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435610464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:45,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:45,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:56:45,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206865897] [2022-11-19 06:56:45,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:45,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:56:45,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:45,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:56:45,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:56:45,096 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 06:56:46,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:46,220 INFO L93 Difference]: Finished difference Result 411 states and 498 transitions. [2022-11-19 06:56:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:56:46,225 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 06:56:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:46,226 INFO L225 Difference]: With dead ends: 411 [2022-11-19 06:56:46,226 INFO L226 Difference]: Without dead ends: 216 [2022-11-19 06:56:46,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:56:46,228 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:46,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 392 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 06:56:46,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-19 06:56:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-19 06:56:46,246 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 06:56:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 260 transitions. [2022-11-19 06:56:46,248 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 260 transitions. Word has length 64 [2022-11-19 06:56:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:46,248 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 260 transitions. [2022-11-19 06:56:46,249 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 06:56:46,249 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 260 transitions. [2022-11-19 06:56:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 06:56:46,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:46,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:46,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 06:56:46,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 06:56:46,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:56:46,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:46,467 INFO L85 PathProgramCache]: Analyzing trace with hash -869473738, now seen corresponding path program 1 times [2022-11-19 06:56:46,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:46,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277770806] [2022-11-19 06:56:46,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:46,550 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:56:46,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377374810] [2022-11-19 06:56:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:46,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:46,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:46,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:46,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:57:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:57:34,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 06:57:34,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:57:34,601 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 06:57:34,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:57:34,728 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 06:57:34,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:57:34,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277770806] [2022-11-19 06:57:34,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:57:34,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377374810] [2022-11-19 06:57:34,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377374810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:57:34,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [258475946] [2022-11-19 06:57:34,756 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-19 06:57:34,756 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:57:34,761 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:57:34,768 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:57:34,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:57:34,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 06:57:34,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-19 06:57:34,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:34,977 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-19 06:57:34,977 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 06:57:34,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:34,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-19 06:57:35,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,033 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:57:35,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:57:35,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,105 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 06:57:35,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2022-11-19 06:57:35,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,181 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-19 06:57:35,182 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 06:57:35,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,217 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 06:57:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,286 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-19 06:57:35,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-19 06:57:35,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-19 06:57:35,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9897009 treesize of output 5376288 [2022-11-19 06:57:35,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:35,978 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 06:57:36,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-19 06:57:36,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-19 06:57:36,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-19 06:57:36,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-19 06:57:36,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-19 06:57:36,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-19 06:57:36,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 36 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 8458592 treesize of output 4759837 [2022-11-19 06:57:36,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 06:57:36,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,609 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-19 06:57:36,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-11-19 06:57:36,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:36,726 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-19 06:57:36,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-11-19 06:57:36,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 06:57:37,015 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 06:57:37,021 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 06:57:37,028 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 06:57:37,093 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 06:57:37,094 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 06:57:37,134 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-19 06:57:37,135 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 06:57:37,169 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-19 06:57:37,170 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 06:57:37,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 06:57:37,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-19 06:57:37,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-19 06:57:37,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-19 06:57:37,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-19 06:57:37,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,404 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 06:57:37,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-19 06:57:37,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:57:37,723 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 06:57:37,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-19 06:57:38,954 INFO L217 Elim1Store]: Index analysis took 759 ms [2022-11-19 06:57:45,081 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 109 DAG size of output: 31 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 06:57:45,082 INFO L321 Elim1Store]: treesize reduction 190, result has 18.1 percent of original size [2022-11-19 06:57:45,083 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 06:57:46,649 INFO L217 Elim1Store]: Index analysis took 1242 ms [2022-11-19 06:57:47,359 INFO L321 Elim1Store]: treesize reduction 87, result has 5.4 percent of original size [2022-11-19 06:57:47,362 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 06:57:59,791 WARN L233 SmtUtils]: Spent 12.25s on a formula simplification. DAG size of input: 67 DAG size of output: 32 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 06:57:59,792 INFO L321 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-19 06:57:59,793 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 06:58:00,252 INFO L217 Elim1Store]: Index analysis took 190 ms [2022-11-19 06:58:33,000 WARN L233 SmtUtils]: Spent 32.74s on a formula simplification. DAG size of input: 90 DAG size of output: 45 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 06:58:33,001 INFO L321 Elim1Store]: treesize reduction 266, result has 31.6 percent of original size [2022-11-19 06:58:33,002 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 06:58:35,522 INFO L217 Elim1Store]: Index analysis took 1707 ms [2022-11-19 06:59:12,680 WARN L233 SmtUtils]: Spent 35.86s 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 06:59:12,681 INFO L321 Elim1Store]: treesize reduction 13218, result has 27.3 percent of original size [2022-11-19 06:59:12,681 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 06:59:14,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:59:14,873 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 06:59:15,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:15,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:15,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:59:15,145 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 06:59:16,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:16,879 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 06:59:16,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:59:16,989 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 06:59:18,060 INFO L217 Elim1Store]: Index analysis took 116 ms [2022-11-19 06:59:21,758 INFO L321 Elim1Store]: treesize reduction 550, result has 14.1 percent of original size [2022-11-19 06:59:21,760 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 06:59:32,489 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:59:33,383 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 06:59:33,385 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 06:59:34,697 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 06:59:44,599 WARN L233 SmtUtils]: Spent 7.36s 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 06:59:44,600 INFO L321 Elim1Store]: treesize reduction 185, result has 49.9 percent of original size [2022-11-19 06:59:44,602 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 06:59:46,006 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 06:59:48,750 INFO L321 Elim1Store]: treesize reduction 17, result has 48.5 percent of original size [2022-11-19 06:59:48,752 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 06:59:49,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-19 06:59:53,363 INFO L321 Elim1Store]: treesize reduction 45, result has 49.4 percent of original size [2022-11-19 06:59:53,365 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 07:00:34,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:34,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:34,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:34,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:36,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,494 INFO L217 Elim1Store]: Index analysis took 8396 ms [2022-11-19 07:00:38,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,498 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:38,509 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 07:00:38,738 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 07:00:41,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:45,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:47,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,001 INFO L217 Elim1Store]: Index analysis took 8385 ms [2022-11-19 07:00:48,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,005 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,006 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:48,015 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 07:00:49,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:49,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:53,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,515 INFO L217 Elim1Store]: Index analysis took 6134 ms [2022-11-19 07:00:54,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,521 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:54,529 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 07:00:54,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:55,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:55,091 INFO L217 Elim1Store]: Index analysis took 137 ms [2022-11-19 07:00:55,093 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 07:00:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:56,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:57,098 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:59,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:00:59,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:00:59,770 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,310 INFO L217 Elim1Store]: Index analysis took 4652 ms [2022-11-19 07:01:00,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,316 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:00,323 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 07:01:00,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:00,816 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 07:01:01,185 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:01:03,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,708 INFO L217 Elim1Store]: Index analysis took 2433 ms [2022-11-19 07:01:03,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:03,727 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 07:01:10,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:16,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,153 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,425 INFO L217 Elim1Store]: Index analysis took 9175 ms [2022-11-19 07:01:18,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,433 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:18,438 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 07:01:18,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:19,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:19,048 INFO L217 Elim1Store]: Index analysis took 119 ms [2022-11-19 07:01:19,050 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 07:01:19,255 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:01:25,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:25,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:25,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:26,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,805 INFO L217 Elim1Store]: Index analysis took 8320 ms [2022-11-19 07:01:27,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,810 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:27,819 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 07:01:28,244 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:01:30,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:35,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:35,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,580 INFO L217 Elim1Store]: Index analysis took 7977 ms [2022-11-19 07:01:36,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:36,593 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 07:01:37,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:37,229 INFO L217 Elim1Store]: Index analysis took 108 ms [2022-11-19 07:01:37,231 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 07:01:38,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:38,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,256 INFO L217 Elim1Store]: Index analysis took 1853 ms [2022-11-19 07:01:39,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:01:39,272 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 07:01:56,695 INFO L217 Elim1Store]: Index analysis took 11427 ms [2022-11-19 07:01:58,474 INFO L321 Elim1Store]: treesize reduction 538, result has 3.8 percent of original size [2022-11-19 07:01:58,475 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 07:01:59,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:01:59,056 INFO L217 Elim1Store]: Index analysis took 340 ms [2022-11-19 07:01:59,628 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:01:59,629 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 07:02:00,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:00,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:00,036 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 07:02:06,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:09,428 INFO L217 Elim1Store]: Index analysis took 9100 ms [2022-11-19 07:02:10,734 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 07:02:11,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:12,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:13,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:22,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,584 INFO L217 Elim1Store]: Index analysis took 12383 ms [2022-11-19 07:02:23,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,587 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,588 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:23,602 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 07:02:24,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:24,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:24,218 INFO L217 Elim1Store]: Index analysis took 317 ms [2022-11-19 07:02:24,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:02:24,870 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 07:02:25,446 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:02:26,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:29,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:33,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:42,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,464 INFO L217 Elim1Store]: Index analysis took 19121 ms [2022-11-19 07:02:45,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,472 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,473 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:45,482 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 07:02:46,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:46,618 INFO L217 Elim1Store]: Index analysis took 455 ms [2022-11-19 07:02:47,602 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:02:47,602 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 07:02:48,123 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:02:49,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:49,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:50,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:52,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:52,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:52,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:02:53,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,539 INFO L217 Elim1Store]: Index analysis took 5135 ms [2022-11-19 07:02:53,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,543 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,546 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,549 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,550 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:02:53,552 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 07:02:53,779 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 07:02:54,340 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-19 07:04:44,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:04:48,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:04:48,779 INFO L217 Elim1Store]: Index analysis took 4171 ms [2022-11-19 07:04:48,958 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 07:04:51,168 INFO L217 Elim1Store]: Index analysis took 765 ms [2022-11-19 07:07:11,237 WARN L233 SmtUtils]: Spent 2.33m 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 07:07:11,240 INFO L321 Elim1Store]: treesize reduction 1365, result has 5.7 percent of original size [2022-11-19 07:07:11,248 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 07:09:38,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:09:38,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:09:38,681 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 07:09:38,686 INFO L158 Benchmark]: Toolchain (without parser) took 803607.31ms. Allocated memory was 132.1MB in the beginning and 645.9MB in the end (delta: 513.8MB). Free memory was 101.8MB in the beginning and 393.7MB in the end (delta: -291.9MB). Peak memory consumption was 422.0MB. Max. memory is 16.1GB. [2022-11-19 07:09:38,686 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:09:38,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1065.42ms. Allocated memory is still 132.1MB. Free memory was 101.7MB in the beginning and 87.4MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 07:09:38,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 139.08ms. Allocated memory is still 132.1MB. Free memory was 87.4MB in the beginning and 80.2MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:09:38,687 INFO L158 Benchmark]: Boogie Preprocessor took 93.00ms. Allocated memory is still 132.1MB. Free memory was 80.2MB in the beginning and 72.7MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:09:38,687 INFO L158 Benchmark]: RCFGBuilder took 2598.65ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 72.2MB in the beginning and 91.3MB in the end (delta: -19.1MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2022-11-19 07:09:38,687 INFO L158 Benchmark]: TraceAbstraction took 799700.21ms. Allocated memory was 174.1MB in the beginning and 645.9MB in the end (delta: 471.9MB). Free memory was 90.3MB in the beginning and 393.7MB in the end (delta: -303.4MB). Peak memory consumption was 368.7MB. Max. memory is 16.1GB. [2022-11-19 07:09:38,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1065.42ms. Allocated memory is still 132.1MB. Free memory was 101.7MB in the beginning and 87.4MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 139.08ms. Allocated memory is still 132.1MB. Free memory was 87.4MB in the beginning and 80.2MB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.00ms. Allocated memory is still 132.1MB. Free memory was 80.2MB in the beginning and 72.7MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2598.65ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 72.2MB in the beginning and 91.3MB in the end (delta: -19.1MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. * TraceAbstraction took 799700.21ms. Allocated memory was 174.1MB in the beginning and 645.9MB in the end (delta: 471.9MB). Free memory was 90.3MB in the beginning and 393.7MB in the end (delta: -303.4MB). Peak memory consumption was 368.7MB. 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 07:09:38,902 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-19 07:09:38,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 --- 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 07:09:41,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:09:41,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:09:41,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:09:41,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:09:41,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:09:41,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:09:41,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:09:41,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:09:41,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:09:41,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:09:41,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:09:41,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:09:41,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:09:41,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:09:41,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:09:41,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:09:41,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:09:41,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:09:41,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:09:41,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:09:41,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:09:41,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:09:41,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:09:41,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:09:41,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:09:41,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:09:41,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:09:41,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:09:41,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:09:41,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:09:41,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:09:41,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:09:41,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:09:41,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:09:41,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:09:41,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:09:41,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:09:41,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:09:41,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:09:41,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:09:41,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:09:41,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:09:41,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:09:41,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:09:41,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:09:41,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:09:41,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:09:41,908 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:09:41,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:09:41,909 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:09:41,909 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:09:41,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:09:41,910 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:09:41,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:09:41,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:09:41,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:09:41,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:09:41,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:09:41,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:09:41,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:09:41,913 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:09:41,913 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:09:41,914 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:09:41,914 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:09:41,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:09:41,915 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:09:41,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:09:41,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:09:41,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:09:41,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:09:41,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:09:41,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:09:41,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:09:41,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:09:41,917 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:09:41,918 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:09:41,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:09:41,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:09:41,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:09:41,919 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 [2022-11-19 07:09:42,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:09:42,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:09:42,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:09:42,495 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:09:42,496 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:09:42,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2022-11-19 07:09:42,592 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/data/1828634e6/1b41b044024d478cb49985dbd1d80528/FLAG0d787e1ec [2022-11-19 07:09:43,588 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:09:43,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2022-11-19 07:09:43,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/data/1828634e6/1b41b044024d478cb49985dbd1d80528/FLAG0d787e1ec [2022-11-19 07:09:43,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/data/1828634e6/1b41b044024d478cb49985dbd1d80528 [2022-11-19 07:09:43,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:09:43,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:09:43,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:09:43,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:09:43,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:09:43,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:43" (1/1) ... [2022-11-19 07:09:43,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613d9010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:43, skipping insertion in model container [2022-11-19 07:09:43,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:43" (1/1) ... [2022-11-19 07:09:43,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:09:43,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:09:44,475 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2022-11-19 07:09:44,637 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2022-11-19 07:09:44,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:09:44,668 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:09:44,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:09:44,745 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2022-11-19 07:09:44,909 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2022-11-19 07:09:44,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:09:44,919 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:09:44,952 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2022-11-19 07:09:45,009 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_6e511525-28d8-40be-a3f9-15dd55d9c48d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2022-11-19 07:09:45,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:09:45,086 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:09:45,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45 WrapperNode [2022-11-19 07:09:45,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:09:45,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:09:45,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:09:45,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:09:45,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,253 INFO L138 Inliner]: procedures = 180, calls = 285, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1022 [2022-11-19 07:09:45,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:09:45,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:09:45,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:09:45,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:09:45,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,368 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:09:45,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:09:45,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:09:45,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:09:45,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (1/1) ... [2022-11-19 07:09:45,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:09:45,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:45,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:09:45,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:09:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:09:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:09:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:09:45,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:09:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:09:45,520 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:09:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:09:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:09:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:09:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:09:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:09:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:09:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:09:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:09:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:09:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:09:45,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:09:45,880 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:09:45,884 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:09:54,814 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:09:54,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:09:54,835 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-19 07:09:54,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:54 BoogieIcfgContainer [2022-11-19 07:09:54,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:09:54,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:09:54,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:09:54,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:09:54,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:09:43" (1/3) ... [2022-11-19 07:09:54,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57576f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:09:54, skipping insertion in model container [2022-11-19 07:09:54,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:45" (2/3) ... [2022-11-19 07:09:54,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57576f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:09:54, skipping insertion in model container [2022-11-19 07:09:54,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:54" (3/3) ... [2022-11-19 07:09:54,857 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test3-1.i [2022-11-19 07:09:54,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:09:54,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:09:54,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:09:54,983 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;@71e3294b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:09:54,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:09:54,991 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 07:09:55,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 07:09:55,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:55,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:55,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:55,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1311467126, now seen corresponding path program 1 times [2022-11-19 07:09:55,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:09:55,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967609100] [2022-11-19 07:09:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:55,030 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 07:09:55,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:09:55,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:09:55,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:09:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:55,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:09:55,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:09:55,361 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 07:09:55,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:09:55,363 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:09:55,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967609100] [2022-11-19 07:09:55,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967609100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:55,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:55,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:09:55,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425409874] [2022-11-19 07:09:55,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:55,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:09:55,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:09:55,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:09:55,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:09:55,449 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 07:09:55,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:55,586 INFO L93 Difference]: Finished difference Result 398 states and 669 transitions. [2022-11-19 07:09:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:09:55,589 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 07:09:55,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:55,609 INFO L225 Difference]: With dead ends: 398 [2022-11-19 07:09:55,609 INFO L226 Difference]: Without dead ends: 196 [2022-11-19 07:09:55,615 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 07:09:55,621 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 07:09:55,623 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 07:09:55,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-19 07:09:55,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-11-19 07:09:55,730 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 07:09:55,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2022-11-19 07:09:55,734 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 9 [2022-11-19 07:09:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:55,734 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2022-11-19 07:09:55,735 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 07:09:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2022-11-19 07:09:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:09:55,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:55,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:55,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:09:55,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:09:55,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:55,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1760313746, now seen corresponding path program 1 times [2022-11-19 07:09:55,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:09:55,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866659581] [2022-11-19 07:09:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:55,945 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 07:09:55,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:09:55,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:09:55,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:09:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:56,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:09:56,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:09:56,334 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 07:09:56,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:09:56,335 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:09:56,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866659581] [2022-11-19 07:09:56,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866659581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:56,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:56,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:09:56,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644988067] [2022-11-19 07:09:56,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:56,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:09:56,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:09:56,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:09:56,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:09:56,341 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 07:09:58,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:01,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:01,680 INFO L93 Difference]: Finished difference Result 498 states and 662 transitions. [2022-11-19 07:10:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:10:01,685 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 07:10:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:01,687 INFO L225 Difference]: With dead ends: 498 [2022-11-19 07:10:01,687 INFO L226 Difference]: Without dead ends: 302 [2022-11-19 07:10:01,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 07:10:01,690 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 140 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 5.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:01,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 695 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-19 07:10:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-19 07:10:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 299. [2022-11-19 07:10:01,716 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 07:10:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 397 transitions. [2022-11-19 07:10:01,719 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 397 transitions. Word has length 14 [2022-11-19 07:10:01,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:01,719 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 397 transitions. [2022-11-19 07:10:01,720 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 07:10:01,720 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 397 transitions. [2022-11-19 07:10:01,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:10:01,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:01,722 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 07:10:01,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:01,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:01,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:01,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1831692255, now seen corresponding path program 1 times [2022-11-19 07:10:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:01,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883359667] [2022-11-19 07:10:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:01,941 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 07:10:01,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:01,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:01,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:02,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:10:02,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:02,281 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 07:10:02,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:02,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:02,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883359667] [2022-11-19 07:10:02,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883359667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:02,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:02,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:10:02,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954424551] [2022-11-19 07:10:02,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:02,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:10:02,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:02,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:10:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:10:02,287 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 07:10:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:02,501 INFO L93 Difference]: Finished difference Result 497 states and 670 transitions. [2022-11-19 07:10:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:10:02,503 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 07:10:02,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:02,505 INFO L225 Difference]: With dead ends: 497 [2022-11-19 07:10:02,506 INFO L226 Difference]: Without dead ends: 332 [2022-11-19 07:10:02,507 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 07:10:02,509 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:02,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 624 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:10:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-19 07:10:02,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 305. [2022-11-19 07:10:02,538 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 07:10:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 387 transitions. [2022-11-19 07:10:02,540 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 387 transitions. Word has length 44 [2022-11-19 07:10:02,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:02,541 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 387 transitions. [2022-11-19 07:10:02,541 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 07:10:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 387 transitions. [2022-11-19 07:10:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:10:02,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:02,544 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 07:10:02,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:02,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:02,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:02,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1557793941, now seen corresponding path program 1 times [2022-11-19 07:10:02,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:02,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570146075] [2022-11-19 07:10:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:02,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:10:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:02,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:02,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:03,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:10:03,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:03,289 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 07:10:03,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:03,290 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:03,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570146075] [2022-11-19 07:10:03,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570146075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:03,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:03,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:10:03,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684254621] [2022-11-19 07:10:03,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:03,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:03,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:03,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:03,293 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 07:10:03,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:03,516 INFO L93 Difference]: Finished difference Result 489 states and 624 transitions. [2022-11-19 07:10:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:10:03,518 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 07:10:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:03,520 INFO L225 Difference]: With dead ends: 489 [2022-11-19 07:10:03,521 INFO L226 Difference]: Without dead ends: 318 [2022-11-19 07:10:03,522 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 07:10:03,532 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 96 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:03,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 846 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:10:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-19 07:10:03,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 293. [2022-11-19 07:10:03,577 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 07:10:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 367 transitions. [2022-11-19 07:10:03,584 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 367 transitions. Word has length 44 [2022-11-19 07:10:03,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:03,585 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 367 transitions. [2022-11-19 07:10:03,590 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 07:10:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 367 transitions. [2022-11-19 07:10:03,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 07:10:03,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:03,592 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 07:10:03,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:03,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:03,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1299628503, now seen corresponding path program 1 times [2022-11-19 07:10:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:03,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274949271] [2022-11-19 07:10:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:03,795 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 07:10:03,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:03,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:03,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:04,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:10:04,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:04,179 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:04,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:04,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:04,195 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 07:10:04,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:10:04,292 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 07:10:04,329 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 07:10:04,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:04,330 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:04,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274949271] [2022-11-19 07:10:04,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274949271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:04,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:04,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:10:04,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970612492] [2022-11-19 07:10:04,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:04,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:10:04,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:10:04,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:10:04,333 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 07:10:09,282 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 07:10:13,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:13,260 INFO L93 Difference]: Finished difference Result 548 states and 684 transitions. [2022-11-19 07:10:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:10:13,261 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 07:10:13,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:13,263 INFO L225 Difference]: With dead ends: 548 [2022-11-19 07:10:13,264 INFO L226 Difference]: Without dead ends: 388 [2022-11-19 07:10:13,265 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 07:10:13,266 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 144 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s 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, 8.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:13,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 624 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-19 07:10:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-19 07:10:13,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 292. [2022-11-19 07:10:13,311 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 07:10:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 365 transitions. [2022-11-19 07:10:13,314 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 365 transitions. Word has length 44 [2022-11-19 07:10:13,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:13,314 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 365 transitions. [2022-11-19 07:10:13,314 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 07:10:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 365 transitions. [2022-11-19 07:10:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 07:10:13,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:13,318 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 07:10:13,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:13,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:13,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:13,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:13,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1888842752, now seen corresponding path program 1 times [2022-11-19 07:10:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:13,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496174975] [2022-11-19 07:10:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:13,540 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 07:10:13,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:13,542 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:13,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:14,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:10:14,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:14,535 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 07:10:14,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:14,560 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:14,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496174975] [2022-11-19 07:10:14,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496174975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:14,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:14,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:10:14,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072757948] [2022-11-19 07:10:14,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:14,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:10:14,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:14,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:10:14,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:10:14,564 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 07:10:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:14,795 INFO L93 Difference]: Finished difference Result 583 states and 735 transitions. [2022-11-19 07:10:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:10:14,796 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 07:10:14,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:14,798 INFO L225 Difference]: With dead ends: 583 [2022-11-19 07:10:14,798 INFO L226 Difference]: Without dead ends: 300 [2022-11-19 07:10:14,799 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 07:10:14,801 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:14,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 459 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:10:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-19 07:10:14,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2022-11-19 07:10:14,833 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 07:10:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 355 transitions. [2022-11-19 07:10:14,836 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 355 transitions. Word has length 81 [2022-11-19 07:10:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:14,837 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 355 transitions. [2022-11-19 07:10:14,837 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 07:10:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 355 transitions. [2022-11-19 07:10:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 07:10:14,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:14,840 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 07:10:14,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:15,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:15,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:15,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash 822747892, now seen corresponding path program 1 times [2022-11-19 07:10:15,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:15,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139717209] [2022-11-19 07:10:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:15,057 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 07:10:15,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:15,063 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:15,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:16,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:10:16,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:16,091 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 07:10:16,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:16,092 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:16,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139717209] [2022-11-19 07:10:16,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139717209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:16,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:16,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:10:16,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050347850] [2022-11-19 07:10:16,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:16,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:10:16,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:16,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:10:16,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:10:16,096 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 07:10:16,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:16,197 INFO L93 Difference]: Finished difference Result 554 states and 667 transitions. [2022-11-19 07:10:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:10:16,199 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 07:10:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:16,201 INFO L225 Difference]: With dead ends: 554 [2022-11-19 07:10:16,201 INFO L226 Difference]: Without dead ends: 301 [2022-11-19 07:10:16,202 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 07:10:16,204 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 07:10:16,204 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 07:10:16,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-19 07:10:16,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-11-19 07:10:16,234 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 07:10:16,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 359 transitions. [2022-11-19 07:10:16,237 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 359 transitions. Word has length 81 [2022-11-19 07:10:16,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:16,237 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 359 transitions. [2022-11-19 07:10:16,238 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 07:10:16,238 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 359 transitions. [2022-11-19 07:10:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:10:16,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:16,240 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 07:10:16,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:16,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:16,454 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:16,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash -473646062, now seen corresponding path program 1 times [2022-11-19 07:10:16,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:16,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036017918] [2022-11-19 07:10:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:16,457 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 07:10:16,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:16,459 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:16,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:17,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:10:17,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:17,595 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 07:10:17,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:10:17,801 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:17,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036017918] [2022-11-19 07:10:17,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036017918] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:17,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1352716404] [2022-11-19 07:10:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:17,802 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:10:17,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:10:17,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:10:17,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 07:10:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:19,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:10:19,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:19,528 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 07:10:19,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:19,626 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 07:10:19,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1352716404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:19,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556888377] [2022-11-19 07:10:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:19,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:19,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:19,634 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:19,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:10:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:20,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:10:20,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:20,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:20,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:20,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:10:20,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-11-19 07:10:20,885 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:10:20,886 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 07:10:20,930 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 07:10:20,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:20,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556888377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:20,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-19 07:10:20,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2022-11-19 07:10:20,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115820218] [2022-11-19 07:10:20,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:20,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:10:20,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:20,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:10:20,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:10:20,933 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 07:10:24,843 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 07:10:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:29,321 INFO L93 Difference]: Finished difference Result 403 states and 488 transitions. [2022-11-19 07:10:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:10:29,322 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 07:10:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:29,324 INFO L225 Difference]: With dead ends: 403 [2022-11-19 07:10:29,325 INFO L226 Difference]: Without dead ends: 382 [2022-11-19 07:10:29,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:10:29,326 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 117 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s 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, 8.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:29,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 612 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-19 07:10:29,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-19 07:10:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 303. [2022-11-19 07:10:29,349 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 07:10:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 361 transitions. [2022-11-19 07:10:29,351 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 361 transitions. Word has length 83 [2022-11-19 07:10:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:29,351 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 361 transitions. [2022-11-19 07:10:29,351 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 07:10:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 361 transitions. [2022-11-19 07:10:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-19 07:10:29,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:29,354 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 07:10:29,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:29,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:29,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:29,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:29,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:29,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1188083589, now seen corresponding path program 1 times [2022-11-19 07:10:29,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:29,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28899103] [2022-11-19 07:10:29,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:29,977 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 07:10:29,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:29,978 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:30,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:30,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:10:30,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:30,944 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 07:10:30,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:31,109 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 07:10:31,109 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:31,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28899103] [2022-11-19 07:10:31,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28899103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:31,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [501846781] [2022-11-19 07:10:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:31,110 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:10:31,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:10:31,112 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:10:31,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-19 07:10:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:32,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:10:32,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:32,747 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 07:10:32,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:32,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [501846781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:32,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:10:32,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-19 07:10:32,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261624871] [2022-11-19 07:10:32,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:32,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:10:32,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:32,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:10:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:10:32,750 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 07:10:35,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:37,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:38,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:38,137 INFO L93 Difference]: Finished difference Result 668 states and 816 transitions. [2022-11-19 07:10:38,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:10:38,138 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 07:10:38,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:38,141 INFO L225 Difference]: With dead ends: 668 [2022-11-19 07:10:38,141 INFO L226 Difference]: Without dead ends: 410 [2022-11-19 07:10:38,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 329 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 07:10:38,142 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 412 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s 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, 5.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:38,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 447 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-19 07:10:38,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-19 07:10:38,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 378. [2022-11-19 07:10:38,187 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 07:10:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 451 transitions. [2022-11-19 07:10:38,191 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 451 transitions. Word has length 113 [2022-11-19 07:10:38,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:38,191 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 451 transitions. [2022-11-19 07:10:38,192 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 07:10:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 451 transitions. [2022-11-19 07:10:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-19 07:10:38,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:38,194 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 07:10:38,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:38,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:38,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:38,609 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2079236494, now seen corresponding path program 1 times [2022-11-19 07:10:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:38,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644808852] [2022-11-19 07:10:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:38,611 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 07:10:38,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:38,612 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:38,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:39,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:10:39,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:39,681 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 07:10:39,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:39,848 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 07:10:39,848 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:39,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644808852] [2022-11-19 07:10:39,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644808852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:39,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1732020905] [2022-11-19 07:10:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:39,849 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:10:39,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:10:39,853 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:10:39,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-19 07:10:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:41,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:10:41,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:41,544 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 07:10:41,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:41,637 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 07:10:41,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1732020905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:41,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063997314] [2022-11-19 07:10:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:41,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:41,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:41,640 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:41,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 07:10:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:42,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:10:42,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:42,660 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 07:10:42,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:42,809 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 07:10:42,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063997314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:42,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:10:42,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2022-11-19 07:10:42,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294807614] [2022-11-19 07:10:42,810 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:10:42,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:10:42,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:42,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:10:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:10:42,812 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 07:10:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:43,369 INFO L93 Difference]: Finished difference Result 723 states and 875 transitions. [2022-11-19 07:10:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:10:43,370 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 07:10:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:43,373 INFO L225 Difference]: With dead ends: 723 [2022-11-19 07:10:43,373 INFO L226 Difference]: Without dead ends: 393 [2022-11-19 07:10:43,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:10:43,375 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 07:10:43,375 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 07:10:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-19 07:10:43,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 389. [2022-11-19 07:10:43,406 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 07:10:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 469 transitions. [2022-11-19 07:10:43,409 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 469 transitions. Word has length 120 [2022-11-19 07:10:43,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:43,409 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 469 transitions. [2022-11-19 07:10:43,410 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 07:10:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 469 transitions. [2022-11-19 07:10:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-19 07:10:43,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:43,426 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 07:10:43,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:43,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:43,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:44,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:44,028 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash -180525716, now seen corresponding path program 2 times [2022-11-19 07:10:44,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:10:44,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992286314] [2022-11-19 07:10:44,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:10:44,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:10:44,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:10:44,030 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:44,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/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 07:10:45,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:10:45,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:10:45,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:10:45,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:45,383 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 07:10:45,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:45,798 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 07:10:45,799 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:10:45,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992286314] [2022-11-19 07:10:45,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992286314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:45,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [244131266] [2022-11-19 07:10:45,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:10:45,799 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:10:45,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:10:45,802 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:10:45,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-19 07:10:47,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:10:47,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:10:47,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:10:47,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:48,029 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 07:10:48,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:48,191 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 07:10:48,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [244131266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:48,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356542218] [2022-11-19 07:10:48,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:10:48,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:48,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:48,213 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:48,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e511525-28d8-40be-a3f9-15dd55d9c48d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-19 07:10:49,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:10:49,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:10:49,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:10:49,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:49,545 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 07:10:49,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:10:50,012 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 07:10:50,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356542218] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:10:50,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:10:50,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-19 07:10:50,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418432849] [2022-11-19 07:10:50,014 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:10:50,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:10:50,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:10:50,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:10:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:10:50,016 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)