./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:29:22,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:29:22,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:29:22,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:29:22,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:29:22,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:29:22,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:29:22,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:29:22,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:29:22,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:29:22,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:29:22,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:29:22,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:29:22,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:29:22,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:29:22,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:29:22,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:29:22,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:29:22,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:29:22,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:29:22,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:29:22,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:29:22,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:29:22,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:29:22,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:29:22,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:29:22,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:29:22,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:29:22,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:29:22,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:29:22,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:29:22,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:29:22,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:29:22,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:29:22,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:29:22,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:29:22,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:29:22,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:29:22,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:29:22,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:29:22,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:29:22,740 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:29:22,759 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:29:22,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:29:22,759 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:29:22,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:29:22,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:29:22,760 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:29:22,760 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:29:22,760 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:29:22,760 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:29:22,761 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:29:22,761 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:29:22,761 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:29:22,761 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:29:22,761 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:29:22,761 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:29:22,762 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:29:22,762 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:29:22,762 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:29:22,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:29:22,763 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:29:22,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:29:22,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:29:22,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:29:22,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:29:22,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:29:22,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:29:22,764 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:29:22,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:29:22,764 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:29:22,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:29:22,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:29:22,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:29:22,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:29:22,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:29:22,765 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:29:22,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:29:22,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:29:22,765 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:29:22,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:29:22,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:29:22,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:29:22,766 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_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 [2022-12-14 05:29:22,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:29:22,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:29:22,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:29:22,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:29:22,980 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:29:22,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2022-12-14 05:29:25,627 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:29:25,809 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:29:25,810 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2022-12-14 05:29:25,820 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/data/17c178bd9/311686e593244840ad37c4db0ce1de44/FLAG00279f91a [2022-12-14 05:29:25,831 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/data/17c178bd9/311686e593244840ad37c4db0ce1de44 [2022-12-14 05:29:25,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:29:25,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:29:25,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:29:25,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:29:25,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:29:25,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:29:25" (1/1) ... [2022-12-14 05:29:25,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2971753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:25, skipping insertion in model container [2022-12-14 05:29:25,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:29:25" (1/1) ... [2022-12-14 05:29:25,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:29:25,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:29:26,138 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2022-12-14 05:29:26,216 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 05:29:26,218 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2022-12-14 05:29:26,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:29:26,229 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:29:26,249 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2022-12-14 05:29:26,291 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 05:29:26,293 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2022-12-14 05:29:26,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:29:26,317 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:29:26,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26 WrapperNode [2022-12-14 05:29:26,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:29:26,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:29:26,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:29:26,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:29:26,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,390 INFO L138 Inliner]: procedures = 177, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-12-14 05:29:26,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:29:26,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:29:26,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:29:26,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:29:26,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,464 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:29:26,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:29:26,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:29:26,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:29:26,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (1/1) ... [2022-12-14 05:29:26,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:29:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:29:26,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:29:26,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:29:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 05:29:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 05:29:26,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 05:29:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 05:29:26,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 05:29:26,532 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 05:29:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:29:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:29:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 05:29:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:29:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 05:29:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 05:29:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:29:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:29:26,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:29:26,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:29:26,707 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:29:26,709 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:29:27,878 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:29:28,193 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:29:28,194 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-12-14 05:29:28,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:29:28 BoogieIcfgContainer [2022-12-14 05:29:28,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:29:28,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:29:28,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:29:28,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:29:28,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:29:25" (1/3) ... [2022-12-14 05:29:28,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97766a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:29:28, skipping insertion in model container [2022-12-14 05:29:28,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:29:26" (2/3) ... [2022-12-14 05:29:28,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97766a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:29:28, skipping insertion in model container [2022-12-14 05:29:28,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:29:28" (3/3) ... [2022-12-14 05:29:28,203 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-1.i [2022-12-14 05:29:28,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:29:28,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 05:29:28,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:29:28,266 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;@1a3f7eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:29:28,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 05:29:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 135 states have (on average 1.8148148148148149) internal successors, (245), 142 states have internal predecessors, (245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 05:29:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 05:29:28,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:29:28,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 05:29:28,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:29:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:29:28,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1932660624, now seen corresponding path program 1 times [2022-12-14 05:29:28,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:29:28,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766656104] [2022-12-14 05:29:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:28,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:29:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:28,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:29:28,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766656104] [2022-12-14 05:29:28,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 05:29:28,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597819180] [2022-12-14 05:29:28,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:28,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:28,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:29:28,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:29:28,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:29:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:28,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 05:29:28,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:29:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:29:28,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:29:28,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597819180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:29:28,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:29:28,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:29:28,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592778113] [2022-12-14 05:29:28,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:29:28,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:29:28,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:29:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:29:28,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:29:28,621 INFO L87 Difference]: Start difference. First operand has 151 states, 135 states have (on average 1.8148148148148149) internal successors, (245), 142 states have internal predecessors, (245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:29:30,002 INFO L93 Difference]: Finished difference Result 301 states and 538 transitions. [2022-12-14 05:29:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:29:30,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 05:29:30,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:29:30,013 INFO L225 Difference]: With dead ends: 301 [2022-12-14 05:29:30,013 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 05:29:30,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:29:30,017 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:29:30,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 05:29:30,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 05:29:30,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-12-14 05:29:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 141 states have internal predecessors, (161), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 05:29:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2022-12-14 05:29:30,049 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 6 [2022-12-14 05:29:30,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:29:30,049 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2022-12-14 05:29:30,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2022-12-14 05:29:30,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 05:29:30,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:29:30,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:29:30,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:29:30,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 05:29:30,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:29:30,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:29:30,255 INFO L85 PathProgramCache]: Analyzing trace with hash 366577228, now seen corresponding path program 1 times [2022-12-14 05:29:30,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:29:30,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556388577] [2022-12-14 05:29:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:30,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:29:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:30,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:29:30,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556388577] [2022-12-14 05:29:30,317 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 05:29:30,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65242590] [2022-12-14 05:29:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:30,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:29:30,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:29:30,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:29:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:30,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 05:29:30,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:29:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:29:30,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:29:30,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65242590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:29:30,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:29:30,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:29:30,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351697836] [2022-12-14 05:29:30,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:29:30,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:29:30,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:29:30,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:29:30,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:29:30,535 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:32,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-12-14 05:29:34,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:29:34,322 INFO L93 Difference]: Finished difference Result 342 states and 425 transitions. [2022-12-14 05:29:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:29:34,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 05:29:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:29:34,330 INFO L225 Difference]: With dead ends: 342 [2022-12-14 05:29:34,330 INFO L226 Difference]: Without dead ends: 290 [2022-12-14 05:29:34,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:29:34,331 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 149 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:29:34,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 351 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-14 05:29:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-12-14 05:29:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 151. [2022-12-14 05:29:34,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 142 states have internal predecessors, (162), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 05:29:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 184 transitions. [2022-12-14 05:29:34,344 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 184 transitions. Word has length 17 [2022-12-14 05:29:34,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:29:34,344 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 184 transitions. [2022-12-14 05:29:34,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:34,345 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 184 transitions. [2022-12-14 05:29:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 05:29:34,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:29:34,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:29:34,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:29:34,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:34,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:29:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:29:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1239149554, now seen corresponding path program 1 times [2022-12-14 05:29:34,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:29:34,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562094806] [2022-12-14 05:29:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:34,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:29:34,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 05:29:34,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805333493] [2022-12-14 05:29:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:34,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:34,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:29:34,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:29:34,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:29:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:35,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:29:35,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:29:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:29:35,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:29:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:29:35,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:29:35,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562094806] [2022-12-14 05:29:35,712 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 05:29:35,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805333493] [2022-12-14 05:29:35,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805333493] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:29:35,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [295465695] [2022-12-14 05:29:35,732 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 05:29:35,732 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:29:35,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:29:35,741 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:29:35,741 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:29:35,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:35,852 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 05:29:35,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-12-14 05:29:35,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:35,878 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:29:35,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:29:35,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:35,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 05:29:35,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:35,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:35,938 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 05:29:35,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 05:29:35,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:35,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:35,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 05:29:35,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:35,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:29:35,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-12-14 05:29:35,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:35,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 05:29:36,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 05:29:36,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 05:29:36,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-12-14 05:29:36,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 05:29:36,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 05:29:36,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 05:29:36,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 05:29:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:29:36,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-12-14 05:29:36,756 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:29:49,675 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 251 DAG size of output: 236 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:29:49,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [295465695] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:29:49,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:29:49,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3] total 11 [2022-12-14 05:29:49,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321247329] [2022-12-14 05:29:49,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:29:49,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:29:49,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:29:49,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:29:49,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=69, Unknown=1, NotChecked=0, Total=132 [2022-12-14 05:29:49,680 INFO L87 Difference]: Start difference. First operand 151 states and 184 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:51,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:29:53,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:29:55,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:29:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:29:58,834 INFO L93 Difference]: Finished difference Result 313 states and 382 transitions. [2022-12-14 05:29:58,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:29:58,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-12-14 05:29:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:29:58,836 INFO L225 Difference]: With dead ends: 313 [2022-12-14 05:29:58,836 INFO L226 Difference]: Without dead ends: 164 [2022-12-14 05:29:58,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=62, Invalid=69, Unknown=1, NotChecked=0, Total=132 [2022-12-14 05:29:58,837 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:29:58,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 402 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-12-14 05:29:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-12-14 05:29:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-12-14 05:29:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 146 states have (on average 1.178082191780822) internal successors, (172), 152 states have internal predecessors, (172), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 05:29:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-12-14 05:29:58,848 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 61 [2022-12-14 05:29:58,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:29:58,848 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-12-14 05:29:58,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:29:58,849 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-12-14 05:29:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 05:29:58,850 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:29:58,850 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:29:58,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:29:59,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:59,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:29:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:29:59,053 INFO L85 PathProgramCache]: Analyzing trace with hash -786088463, now seen corresponding path program 1 times [2022-12-14 05:29:59,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:29:59,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903004373] [2022-12-14 05:29:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:59,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:29:59,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 05:29:59,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420390057] [2022-12-14 05:29:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:29:59,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:29:59,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:29:59,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:29:59,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:29:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:29:59,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:29:59,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:30:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:30:00,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:30:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 05:30:00,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:30:00,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903004373] [2022-12-14 05:30:00,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 05:30:00,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420390057] [2022-12-14 05:30:00,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420390057] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:30:00,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1778672944] [2022-12-14 05:30:00,143 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 05:30:00,143 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:30:00,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:30:00,144 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:30:00,144 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:30:00,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,226 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:30:00,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:30:00,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:30:00,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,299 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 05:30:00,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 05:30:00,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,332 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 05:30:00,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 05:30:00,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:30:00,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-12-14 05:30:00,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 05:30:00,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 05:30:00,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 05:30:00,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 05:30:00,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 05:30:00,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-12-14 05:30:00,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 05:30:00,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 05:30:00,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 05:30:00,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 05:30:00,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 05:30:00,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,911 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-12-14 05:30:00,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-12-14 05:30:00,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:00,972 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 05:30:00,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-12-14 05:30:00,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 05:30:01,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 05:30:01,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 05:30:01,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 05:30:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-12-14 05:30:01,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 05:30:01,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 05:30:01,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-12-14 05:30:01,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-12-14 05:30:01,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 05:30:01,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 05:30:01,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,801 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-12-14 05:30:01,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-12-14 05:30:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,861 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 05:30:01,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-12-14 05:30:01,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:30:01,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-12-14 05:30:01,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 05:30:02,142 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 253 for LOIs [2022-12-14 05:30:02,336 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:30:08,568 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 235 DAG size of output: 220 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:30:15,999 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 251 DAG size of output: 236 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:30:25,418 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 262 DAG size of output: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:30:38,208 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 284 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:30:53,192 WARN L233 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 284 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:30:54,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1778672944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:30:54,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:30:54,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4] total 17 [2022-12-14 05:30:54,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955510153] [2022-12-14 05:30:54,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:30:54,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 05:30:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:30:54,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 05:30:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=172, Unknown=9, NotChecked=0, Total=272 [2022-12-14 05:30:54,179 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:30:56,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:30:58,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:31:00,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:31:02,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:31:04,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:31:06,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:31:09,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:31:11,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:31:13,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-14 05:31:19,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:31:19,207 INFO L93 Difference]: Finished difference Result 315 states and 384 transitions. [2022-12-14 05:31:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 05:31:19,208 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2022-12-14 05:31:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:31:19,209 INFO L225 Difference]: With dead ends: 315 [2022-12-14 05:31:19,209 INFO L226 Difference]: Without dead ends: 166 [2022-12-14 05:31:19,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 51.8s TimeCoverageRelationStatistics Valid=91, Invalid=172, Unknown=9, NotChecked=0, Total=272 [2022-12-14 05:31:19,210 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:31:19,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 599 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 385 Invalid, 9 Unknown, 0 Unchecked, 25.0s Time] [2022-12-14 05:31:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-12-14 05:31:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-12-14 05:31:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 150 states have (on average 1.1733333333333333) internal successors, (176), 156 states have internal predecessors, (176), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 7 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 05:31:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2022-12-14 05:31:19,228 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 74 [2022-12-14 05:31:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:31:19,228 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2022-12-14 05:31:19,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:31:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2022-12-14 05:31:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 05:31:19,230 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:31:19,230 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:31:19,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:31:19,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:31:19,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:31:19,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:31:19,433 INFO L85 PathProgramCache]: Analyzing trace with hash 27241029, now seen corresponding path program 1 times [2022-12-14 05:31:19,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:31:19,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656957916] [2022-12-14 05:31:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:31:19,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:31:19,559 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 05:31:19,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711714089] [2022-12-14 05:31:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:31:19,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:31:19,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:31:19,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:31:19,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:31:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:31:20,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:31:20,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:31:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 05:31:20,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:31:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 05:31:20,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:31:20,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656957916] [2022-12-14 05:31:20,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 05:31:20,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711714089] [2022-12-14 05:31:20,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711714089] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:31:20,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [70636124] [2022-12-14 05:31:20,534 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-12-14 05:31:20,534 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:31:20,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:31:20,535 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:31:20,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:31:20,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:20,620 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 05:31:20,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 05:31:20,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:20,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 05:31:20,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:20,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:20,676 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 05:31:20,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-12-14 05:31:20,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:20,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 05:31:20,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:20,711 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 05:31:20,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 43 [2022-12-14 05:31:20,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:20,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 05:31:20,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:20,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-12-14 05:31:20,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:20,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:20,776 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 05:31:20,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 05:31:21,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 05:31:21,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-12-14 05:31:21,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-12-14 05:31:21,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-12-14 05:31:21,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 05:31:21,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 05:31:21,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 05:31:21,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 05:31:21,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 05:31:21,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-12-14 05:31:21,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,321 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-12-14 05:31:21,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-12-14 05:31:21,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,379 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-12-14 05:31:21,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-12-14 05:31:21,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-12-14 05:31:21,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 05:31:21,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:31:21,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 05:31:21,558 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-12-14 05:31:21,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2022-12-14 05:31:21,582 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 05:31:21,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2022-12-14 05:31:21,605 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 05:31:21,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-12-14 05:31:21,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 05:31:21,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-14 05:31:21,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-14 05:31:21,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-12-14 05:31:21,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-12-14 05:31:21,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-12-14 05:31:21,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 05:31:21,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-12-14 05:31:21,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-12-14 05:31:21,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-12-14 05:31:23,653 INFO L217 Elim1Store]: Index analysis took 1345 ms [2022-12-14 05:31:30,883 WARN L233 SmtUtils]: Spent 7.23s on a formula simplification. DAG size of input: 109 DAG size of output: 31 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 05:31:30,884 INFO L321 Elim1Store]: treesize reduction 190, result has 18.1 percent of original size [2022-12-14 05:31:30,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 10752723 treesize of output 10752742 [2022-12-14 05:31:32,345 INFO L217 Elim1Store]: Index analysis took 1279 ms [2022-12-14 05:31:32,857 INFO L321 Elim1Store]: treesize reduction 87, result has 5.4 percent of original size [2022-12-14 05:31:32,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 10752718 treesize of output 10752722 [2022-12-14 05:31:49,779 INFO L217 Elim1Store]: Index analysis took 414 ms [2022-12-14 05:32:34,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:32:34,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:32:34,313 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:54) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.pushContext(SimplifyDDA.java:736) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:389) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:648) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) ... 59 more [2022-12-14 05:32:34,323 INFO L158 Benchmark]: Toolchain (without parser) took 188487.65ms. Allocated memory was 138.4MB in the beginning and 7.7GB in the end (delta: 7.6GB). Free memory was 101.7MB in the beginning and 4.2GB in the end (delta: -4.1GB). Peak memory consumption was 6.5GB. Max. memory is 16.1GB. [2022-12-14 05:32:34,324 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:32:34,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.93ms. Allocated memory is still 138.4MB. Free memory was 101.7MB in the beginning and 64.5MB in the end (delta: 37.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-14 05:32:34,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.70ms. Allocated memory is still 138.4MB. Free memory was 64.5MB in the beginning and 55.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 05:32:34,328 INFO L158 Benchmark]: Boogie Preprocessor took 82.83ms. Allocated memory is still 138.4MB. Free memory was 55.2MB in the beginning and 100.8MB in the end (delta: -45.6MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2022-12-14 05:32:34,329 INFO L158 Benchmark]: RCFGBuilder took 1721.98ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 100.8MB in the beginning and 109.3MB in the end (delta: -8.5MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. [2022-12-14 05:32:34,330 INFO L158 Benchmark]: TraceAbstraction took 186123.05ms. Allocated memory was 167.8MB in the beginning and 7.7GB in the end (delta: 7.6GB). Free memory was 108.3MB in the beginning and 4.2GB in the end (delta: -4.1GB). Peak memory consumption was 6.5GB. Max. memory is 16.1GB. [2022-12-14 05:32:34,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.93ms. Allocated memory is still 138.4MB. Free memory was 101.7MB in the beginning and 64.5MB in the end (delta: 37.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.70ms. Allocated memory is still 138.4MB. Free memory was 64.5MB in the beginning and 55.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.83ms. Allocated memory is still 138.4MB. Free memory was 55.2MB in the beginning and 100.8MB in the end (delta: -45.6MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1721.98ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 100.8MB in the beginning and 109.3MB in the end (delta: -8.5MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. * TraceAbstraction took 186123.05ms. Allocated memory was 167.8MB in the beginning and 7.7GB in the end (delta: 7.6GB). Free memory was 108.3MB in the beginning and 4.2GB in the end (delta: -4.1GB). Peak memory consumption was 6.5GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 152801 column 7: canceled: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 05:32:34,558 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-12-14 05:32:34,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 05:32:36,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:32:36,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:32:36,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:32:36,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:32:36,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:32:36,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:32:36,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:32:36,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:32:36,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:32:36,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:32:36,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:32:36,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:32:36,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:32:36,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:32:36,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:32:36,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:32:36,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:32:36,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:32:36,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:32:36,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:32:36,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:32:36,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:32:36,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:32:36,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:32:36,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:32:36,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:32:36,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:32:36,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:32:36,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:32:36,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:32:36,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:32:36,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:32:36,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:32:36,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:32:36,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:32:36,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:32:36,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:32:36,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:32:36,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:32:36,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:32:36,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 05:32:36,447 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:32:36,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:32:36,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:32:36,447 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:32:36,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:32:36,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:32:36,448 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:32:36,448 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:32:36,448 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:32:36,448 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:32:36,449 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:32:36,449 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:32:36,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:32:36,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:32:36,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:32:36,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:32:36,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:32:36,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:32:36,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:32:36,450 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:32:36,450 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 05:32:36,450 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 05:32:36,451 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:32:36,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:32:36,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:32:36,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:32:36,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:32:36,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 05:32:36,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:32:36,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:32:36,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:32:36,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:32:36,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:32:36,452 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 05:32:36,453 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 05:32:36,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:32:36,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:32:36,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 05:32:36,453 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_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 [2022-12-14 05:32:36,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:32:36,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:32:36,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:32:36,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:32:36,707 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:32:36,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2022-12-14 05:32:39,375 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:32:39,641 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:32:39,641 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2022-12-14 05:32:39,655 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/data/e3fdea326/a1b0186cd7d1485f951db1712d5b8b62/FLAG48525f2eb [2022-12-14 05:32:39,669 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/data/e3fdea326/a1b0186cd7d1485f951db1712d5b8b62 [2022-12-14 05:32:39,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:32:39,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:32:39,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:32:39,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:32:39,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:32:39,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:32:39" (1/1) ... [2022-12-14 05:32:39,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397c58f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:39, skipping insertion in model container [2022-12-14 05:32:39,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:32:39" (1/1) ... [2022-12-14 05:32:39,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:32:39,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:32:40,007 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2022-12-14 05:32:40,101 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 05:32:40,103 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2022-12-14 05:32:40,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:32:40,118 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 05:32:40,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:32:40,148 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2022-12-14 05:32:40,199 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 05:32:40,201 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2022-12-14 05:32:40,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:32:40,207 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:32:40,230 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2022-12-14 05:32:40,274 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 05:32:40,276 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2022-12-14 05:32:40,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:32:40,299 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:32:40,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40 WrapperNode [2022-12-14 05:32:40,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:32:40,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:32:40,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:32:40,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:32:40,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,372 INFO L138 Inliner]: procedures = 180, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-12-14 05:32:40,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:32:40,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:32:40,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:32:40,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:32:40,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,461 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:32:40,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:32:40,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:32:40,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:32:40,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (1/1) ... [2022-12-14 05:32:40,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:32:40,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:32:40,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:32:40,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:32:40,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 05:32:40,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 05:32:40,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 05:32:40,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 05:32:40,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 05:32:40,549 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 05:32:40,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 05:32:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:32:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 05:32:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 05:32:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 05:32:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 05:32:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 05:32:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 05:32:40,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 05:32:40,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:32:40,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:32:40,734 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:32:40,737 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:32:50,769 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:32:50,775 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:32:50,776 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-12-14 05:32:50,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:32:50 BoogieIcfgContainer [2022-12-14 05:32:50,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:32:50,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:32:50,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:32:50,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:32:50,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:32:39" (1/3) ... [2022-12-14 05:32:50,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b7c814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:32:50, skipping insertion in model container [2022-12-14 05:32:50,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:32:40" (2/3) ... [2022-12-14 05:32:50,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b7c814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:32:50, skipping insertion in model container [2022-12-14 05:32:50,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:32:50" (3/3) ... [2022-12-14 05:32:50,784 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-1.i [2022-12-14 05:32:50,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:32:50,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 05:32:50,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:32:50,861 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;@4cbe326d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:32:50,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 05:32:50,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 05:32:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 05:32:50,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:50,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:50,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:32:50,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash 678032416, now seen corresponding path program 1 times [2022-12-14 05:32:50,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:32:50,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266588553] [2022-12-14 05:32:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:50,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:50,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:32:50,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:32:50,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 05:32:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:51,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 05:32:51,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:32:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:32:51,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:32:51,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:32:51,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266588553] [2022-12-14 05:32:51,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266588553] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:51,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:51,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:32:51,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292377188] [2022-12-14 05:32:51,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:51,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:32:51,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:32:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:32:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:32:51,091 INFO L87 Difference]: Start difference. First operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:51,143 INFO L93 Difference]: Finished difference Result 506 states and 857 transitions. [2022-12-14 05:32:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:32:51,145 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 05:32:51,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:51,152 INFO L225 Difference]: With dead ends: 506 [2022-12-14 05:32:51,153 INFO L226 Difference]: Without dead ends: 250 [2022-12-14 05:32:51,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:32:51,159 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:51,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:32:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-12-14 05:32:51,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-12-14 05:32:51,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 241 states have internal predecessors, (309), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 05:32:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 331 transitions. [2022-12-14 05:32:51,208 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 331 transitions. Word has length 8 [2022-12-14 05:32:51,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:51,209 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 331 transitions. [2022-12-14 05:32:51,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 331 transitions. [2022-12-14 05:32:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-12-14 05:32:51,210 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:51,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:51,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:32:51,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:51,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:32:51,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1368100487, now seen corresponding path program 1 times [2022-12-14 05:32:51,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:32:51,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640990504] [2022-12-14 05:32:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:51,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:51,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:32:51,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:32:51,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 05:32:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:51,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 05:32:51,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:32:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:32:51,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:32:51,610 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:32:51,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640990504] [2022-12-14 05:32:51,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640990504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:51,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:51,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:32:51,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170601709] [2022-12-14 05:32:51,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:51,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:32:51,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:32:51,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:32:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:32:51,614 INFO L87 Difference]: Start difference. First operand 250 states and 331 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:51,868 INFO L93 Difference]: Finished difference Result 565 states and 756 transitions. [2022-12-14 05:32:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:32:51,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-12-14 05:32:51,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:51,873 INFO L225 Difference]: With dead ends: 565 [2022-12-14 05:32:51,874 INFO L226 Difference]: Without dead ends: 487 [2022-12-14 05:32:51,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:32:51,876 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 294 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:51,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 660 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:32:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-12-14 05:32:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 251. [2022-12-14 05:32:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 242 states have internal predecessors, (310), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 05:32:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 332 transitions. [2022-12-14 05:32:51,902 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 332 transitions. Word has length 42 [2022-12-14 05:32:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:51,902 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 332 transitions. [2022-12-14 05:32:51,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 332 transitions. [2022-12-14 05:32:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 05:32:51,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:51,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:51,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 05:32:52,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:52,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:32:52,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1909784615, now seen corresponding path program 1 times [2022-12-14 05:32:52,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:32:52,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678026814] [2022-12-14 05:32:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:52,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:52,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:32:52,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:32:52,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 05:32:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:53,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:32:53,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:32:53,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:32:53,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:32:53,901 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:32:53,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678026814] [2022-12-14 05:32:53,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678026814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:53,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:53,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:32:53,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854406932] [2022-12-14 05:32:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:53,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:32:53,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:32:53,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:32:53,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:32:53,904 INFO L87 Difference]: Start difference. First operand 251 states and 332 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:54,026 INFO L93 Difference]: Finished difference Result 508 states and 673 transitions. [2022-12-14 05:32:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:32:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 05:32:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:54,027 INFO L225 Difference]: With dead ends: 508 [2022-12-14 05:32:54,027 INFO L226 Difference]: Without dead ends: 260 [2022-12-14 05:32:54,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:32:54,029 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 292 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:54,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 631 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:32:54,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-12-14 05:32:54,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2022-12-14 05:32:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 239 states have (on average 1.2761506276150627) internal successors, (305), 245 states have internal predecessors, (305), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 05:32:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 327 transitions. [2022-12-14 05:32:54,039 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 327 transitions. Word has length 140 [2022-12-14 05:32:54,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:54,039 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 327 transitions. [2022-12-14 05:32:54,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:54,039 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 327 transitions. [2022-12-14 05:32:54,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-14 05:32:54,040 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:54,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:54,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 05:32:54,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:54,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:32:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:54,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1562910771, now seen corresponding path program 1 times [2022-12-14 05:32:54,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:32:54,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625659803] [2022-12-14 05:32:54,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:54,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:54,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:32:54,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:32:54,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 05:32:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:56,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:32:56,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:32:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:32:56,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:32:56,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:32:56,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625659803] [2022-12-14 05:32:56,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625659803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:56,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:56,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 05:32:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251138403] [2022-12-14 05:32:56,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:56,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:32:56,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:32:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:32:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:32:56,235 INFO L87 Difference]: Start difference. First operand 254 states and 327 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:56,617 INFO L93 Difference]: Finished difference Result 546 states and 697 transitions. [2022-12-14 05:32:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:32:56,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-14 05:32:56,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:56,623 INFO L225 Difference]: With dead ends: 546 [2022-12-14 05:32:56,623 INFO L226 Difference]: Without dead ends: 295 [2022-12-14 05:32:56,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 05:32:56,624 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 11 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:56,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 623 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:32:56,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-12-14 05:32:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-12-14 05:32:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 280 states have (on average 1.25) internal successors, (350), 286 states have internal predecessors, (350), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 05:32:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 372 transitions. [2022-12-14 05:32:56,636 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 372 transitions. Word has length 140 [2022-12-14 05:32:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:56,637 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 372 transitions. [2022-12-14 05:32:56,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:32:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 372 transitions. [2022-12-14 05:32:56,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 05:32:56,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:56,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:56,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 05:32:56,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:56,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:32:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1120622574, now seen corresponding path program 1 times [2022-12-14 05:32:56,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:32:56,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986332781] [2022-12-14 05:32:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:56,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:56,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:32:56,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:32:56,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 05:32:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:58,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:32:58,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:32:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:32:58,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:32:58,160 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:32:58,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986332781] [2022-12-14 05:32:58,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986332781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:32:58,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:32:58,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:32:58,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716164337] [2022-12-14 05:32:58,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:32:58,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:32:58,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:32:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:32:58,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:32:58,163 INFO L87 Difference]: Start difference. First operand 295 states and 372 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:32:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:32:58,226 INFO L93 Difference]: Finished difference Result 549 states and 705 transitions. [2022-12-14 05:32:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:32:58,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 155 [2022-12-14 05:32:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:32:58,228 INFO L225 Difference]: With dead ends: 549 [2022-12-14 05:32:58,228 INFO L226 Difference]: Without dead ends: 298 [2022-12-14 05:32:58,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:32:58,230 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:32:58,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:32:58,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-12-14 05:32:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-12-14 05:32:58,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 282 states have (on average 1.25177304964539) internal successors, (353), 289 states have internal predecessors, (353), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-12-14 05:32:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 377 transitions. [2022-12-14 05:32:58,244 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 377 transitions. Word has length 155 [2022-12-14 05:32:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:32:58,244 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 377 transitions. [2022-12-14 05:32:58,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 05:32:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 377 transitions. [2022-12-14 05:32:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-14 05:32:58,247 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:32:58,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:32:58,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 05:32:58,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:58,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:32:58,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:32:58,451 INFO L85 PathProgramCache]: Analyzing trace with hash -852886192, now seen corresponding path program 1 times [2022-12-14 05:32:58,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:32:58,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022113556] [2022-12-14 05:32:58,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:58,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:32:58,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:32:58,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:32:58,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 05:32:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:32:59,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:32:59,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:32:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:32:59,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:32:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:32:59,956 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:32:59,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022113556] [2022-12-14 05:32:59,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022113556] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:32:59,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1420384956] [2022-12-14 05:32:59,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:32:59,957 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:32:59,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:32:59,958 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:32:59,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-12-14 05:33:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:01,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:33:01,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:33:01,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:33:01,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1420384956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:01,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:01,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 05:33:01,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039197511] [2022-12-14 05:33:01,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:01,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:33:01,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:33:01,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:33:01,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:33:01,501 INFO L87 Difference]: Start difference. First operand 298 states and 377 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:33:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:01,581 INFO L93 Difference]: Finished difference Result 573 states and 737 transitions. [2022-12-14 05:33:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:33:01,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2022-12-14 05:33:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:01,583 INFO L225 Difference]: With dead ends: 573 [2022-12-14 05:33:01,583 INFO L226 Difference]: Without dead ends: 319 [2022-12-14 05:33:01,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:33:01,584 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 10 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:01,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 585 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:33:01,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-12-14 05:33:01,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318. [2022-12-14 05:33:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 302 states have (on average 1.2350993377483444) internal successors, (373), 309 states have internal predecessors, (373), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-12-14 05:33:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 397 transitions. [2022-12-14 05:33:01,592 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 397 transitions. Word has length 157 [2022-12-14 05:33:01,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:01,592 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 397 transitions. [2022-12-14 05:33:01,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:33:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 397 transitions. [2022-12-14 05:33:01,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-14 05:33:01,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:01,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:01,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:01,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:01,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:01,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash 622348492, now seen corresponding path program 1 times [2022-12-14 05:33:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:33:01,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084213200] [2022-12-14 05:33:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:01,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:01,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:33:02,000 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:33:02,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 05:33:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:03,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:03,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:33:03,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:33:03,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:33:03,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084213200] [2022-12-14 05:33:03,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084213200] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:03,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1625060390] [2022-12-14 05:33:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:03,426 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:03,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:33:03,426 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:33:03,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 05:33:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:04,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:33:04,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 05:33:05,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:33:05,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1625060390] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:05,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:05,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 05:33:05,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078697703] [2022-12-14 05:33:05,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:05,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:33:05,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:33:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:33:05,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:33:05,160 INFO L87 Difference]: Start difference. First operand 318 states and 397 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:33:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:05,892 INFO L93 Difference]: Finished difference Result 826 states and 1048 transitions. [2022-12-14 05:33:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:33:05,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2022-12-14 05:33:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:05,895 INFO L225 Difference]: With dead ends: 826 [2022-12-14 05:33:05,895 INFO L226 Difference]: Without dead ends: 552 [2022-12-14 05:33:05,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:33:05,896 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 227 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:05,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 724 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 05:33:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-12-14 05:33:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 550. [2022-12-14 05:33:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 525 states have (on average 1.2419047619047618) internal successors, (652), 537 states have internal predecessors, (652), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2022-12-14 05:33:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 696 transitions. [2022-12-14 05:33:05,916 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 696 transitions. Word has length 157 [2022-12-14 05:33:05,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:05,917 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 696 transitions. [2022-12-14 05:33:05,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:33:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 696 transitions. [2022-12-14 05:33:05,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-14 05:33:05,919 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:05,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:05,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-12-14 05:33:06,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:06,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:06,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1130175954, now seen corresponding path program 1 times [2022-12-14 05:33:06,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:33:06,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55272771] [2022-12-14 05:33:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:06,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:06,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:33:06,322 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:33:06,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 05:33:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:07,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:07,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 05:33:07,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 05:33:07,859 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:33:07,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55272771] [2022-12-14 05:33:07,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55272771] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:07,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [378275154] [2022-12-14 05:33:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:07,860 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:07,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:33:07,860 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:33:07,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-12-14 05:33:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:09,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:33:09,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 05:33:10,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:33:10,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [378275154] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:10,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:10,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 05:33:10,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899650162] [2022-12-14 05:33:10,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:10,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 05:33:10,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:33:10,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 05:33:10,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:33:10,193 INFO L87 Difference]: Start difference. First operand 550 states and 696 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:33:10,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:10,600 INFO L93 Difference]: Finished difference Result 953 states and 1209 transitions. [2022-12-14 05:33:10,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 05:33:10,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 164 [2022-12-14 05:33:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:10,608 INFO L225 Difference]: With dead ends: 953 [2022-12-14 05:33:10,608 INFO L226 Difference]: Without dead ends: 688 [2022-12-14 05:33:10,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 05:33:10,609 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 90 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:10,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 673 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:33:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-12-14 05:33:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 686. [2022-12-14 05:33:10,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 658 states have (on average 1.2446808510638299) internal successors, (819), 670 states have internal predecessors, (819), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-12-14 05:33:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 870 transitions. [2022-12-14 05:33:10,643 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 870 transitions. Word has length 164 [2022-12-14 05:33:10,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:10,644 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 870 transitions. [2022-12-14 05:33:10,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 05:33:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 870 transitions. [2022-12-14 05:33:10,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 05:33:10,646 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:10,647 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:10,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2022-12-14 05:33:10,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:11,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:11,048 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:11,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1194831576, now seen corresponding path program 1 times [2022-12-14 05:33:11,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:33:11,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674599087] [2022-12-14 05:33:11,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:11,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:11,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:33:11,050 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:33:11,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 05:33:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:12,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:12,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:12,420 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 05:33:12,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 05:33:12,508 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:33:12,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674599087] [2022-12-14 05:33:12,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674599087] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:12,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [550503135] [2022-12-14 05:33:12,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:12,508 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:12,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:33:12,509 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:33:12,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-12-14 05:33:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:13,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:33:13,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:13,972 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 05:33:13,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:33:13,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [550503135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:13,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:13,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 05:33:13,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173526557] [2022-12-14 05:33:13,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:13,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:33:13,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:33:13,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:33:13,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:33:13,974 INFO L87 Difference]: Start difference. First operand 686 states and 870 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 05:33:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:14,084 INFO L93 Difference]: Finished difference Result 883 states and 1148 transitions. [2022-12-14 05:33:14,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:33:14,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 174 [2022-12-14 05:33:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:14,089 INFO L225 Difference]: With dead ends: 883 [2022-12-14 05:33:14,089 INFO L226 Difference]: Without dead ends: 720 [2022-12-14 05:33:14,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:33:14,090 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 77 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:14,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 805 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:33:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-12-14 05:33:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 713. [2022-12-14 05:33:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 685 states have (on average 1.2131386861313869) internal successors, (831), 697 states have internal predecessors, (831), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-12-14 05:33:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 882 transitions. [2022-12-14 05:33:14,115 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 882 transitions. Word has length 174 [2022-12-14 05:33:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:14,116 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 882 transitions. [2022-12-14 05:33:14,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 05:33:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 882 transitions. [2022-12-14 05:33:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 05:33:14,117 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:14,117 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:14,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2022-12-14 05:33:14,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 05:33:14,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:14,519 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:14,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1105991014, now seen corresponding path program 1 times [2022-12-14 05:33:14,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:33:14,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820871028] [2022-12-14 05:33:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:14,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:14,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:33:14,527 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:33:14,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 05:33:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:15,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:15,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 05:33:15,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 05:33:15,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:33:15,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820871028] [2022-12-14 05:33:15,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820871028] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:15,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1792502296] [2022-12-14 05:33:15,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:15,890 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:15,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:33:15,891 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:33:15,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-12-14 05:33:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:17,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:17,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 05:33:17,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:33:17,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1792502296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:17,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:17,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 05:33:17,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173602144] [2022-12-14 05:33:17,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:17,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:33:17,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:33:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:33:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:33:17,426 INFO L87 Difference]: Start difference. First operand 713 states and 882 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:33:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:17,509 INFO L93 Difference]: Finished difference Result 1288 states and 1608 transitions. [2022-12-14 05:33:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:33:17,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 174 [2022-12-14 05:33:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:17,511 INFO L225 Difference]: With dead ends: 1288 [2022-12-14 05:33:17,511 INFO L226 Difference]: Without dead ends: 665 [2022-12-14 05:33:17,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:33:17,512 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 276 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:17,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 869 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:33:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-12-14 05:33:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 662. [2022-12-14 05:33:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 634 states have (on average 1.1782334384858044) internal successors, (747), 646 states have internal predecessors, (747), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-12-14 05:33:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 798 transitions. [2022-12-14 05:33:17,535 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 798 transitions. Word has length 174 [2022-12-14 05:33:17,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:17,536 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 798 transitions. [2022-12-14 05:33:17,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 05:33:17,536 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 798 transitions. [2022-12-14 05:33:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 05:33:17,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:17,537 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:17,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:17,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2022-12-14 05:33:17,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:17,939 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:17,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:17,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1358232908, now seen corresponding path program 1 times [2022-12-14 05:33:17,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:33:17,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284197798] [2022-12-14 05:33:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:17,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:17,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:33:17,947 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:33:17,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 05:33:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:19,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:19,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 05:33:19,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:19,695 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 05:33:19,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:33:19,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284197798] [2022-12-14 05:33:19,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284197798] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:19,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [749646944] [2022-12-14 05:33:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:19,696 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:19,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:33:19,697 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:33:19,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-12-14 05:33:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:21,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:33:21,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 05:33:21,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:33:21,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [749646944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:21,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:21,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 05:33:21,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658513479] [2022-12-14 05:33:21,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:21,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:33:21,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:33:21,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:33:21,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:33:21,752 INFO L87 Difference]: Start difference. First operand 662 states and 798 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 05:33:24,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:33:28,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:33:30,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 05:33:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:33,566 INFO L93 Difference]: Finished difference Result 1448 states and 1752 transitions. [2022-12-14 05:33:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:33:33,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 174 [2022-12-14 05:33:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:33,570 INFO L225 Difference]: With dead ends: 1448 [2022-12-14 05:33:33,570 INFO L226 Difference]: Without dead ends: 912 [2022-12-14 05:33:33,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:33:33,571 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 512 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:33,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 609 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 144 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-12-14 05:33:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-12-14 05:33:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 551. [2022-12-14 05:33:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 528 states have (on average 1.1742424242424243) internal successors, (620), 535 states have internal predecessors, (620), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-12-14 05:33:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 661 transitions. [2022-12-14 05:33:33,590 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 661 transitions. Word has length 174 [2022-12-14 05:33:33,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:33,590 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 661 transitions. [2022-12-14 05:33:33,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 05:33:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 661 transitions. [2022-12-14 05:33:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-12-14 05:33:33,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:33,591 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:33,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2022-12-14 05:33:33,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-14 05:33:33,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:33,993 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:33,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1943774894, now seen corresponding path program 1 times [2022-12-14 05:33:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:33:33,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106375458] [2022-12-14 05:33:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:33,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:33,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:33:34,000 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:33:34,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 05:33:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:35,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:35,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 05:33:35,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 05:33:35,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:33:35,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106375458] [2022-12-14 05:33:35,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106375458] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:35,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1350691656] [2022-12-14 05:33:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:35,475 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:35,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:33:35,476 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:33:35,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-12-14 05:33:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:37,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:37,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 05:33:37,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:33:37,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1350691656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:33:37,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 05:33:37,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 05:33:37,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15590801] [2022-12-14 05:33:37,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:33:37,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:33:37,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:33:37,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:33:37,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 05:33:37,063 INFO L87 Difference]: Start difference. First operand 551 states and 661 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 05:33:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:37,139 INFO L93 Difference]: Finished difference Result 629 states and 761 transitions. [2022-12-14 05:33:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:33:37,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2022-12-14 05:33:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:37,143 INFO L225 Difference]: With dead ends: 629 [2022-12-14 05:33:37,143 INFO L226 Difference]: Without dead ends: 543 [2022-12-14 05:33:37,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:33:37,144 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 79 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:37,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 766 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 05:33:37,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-12-14 05:33:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 539. [2022-12-14 05:33:37,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 516 states have (on average 1.1647286821705427) internal successors, (601), 523 states have internal predecessors, (601), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-12-14 05:33:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 642 transitions. [2022-12-14 05:33:37,164 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 642 transitions. Word has length 181 [2022-12-14 05:33:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:37,165 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 642 transitions. [2022-12-14 05:33:37,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 05:33:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 642 transitions. [2022-12-14 05:33:37,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-12-14 05:33:37,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:37,166 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:37,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-12-14 05:33:37,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-14 05:33:37,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:37,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:37,568 INFO L85 PathProgramCache]: Analyzing trace with hash -34971296, now seen corresponding path program 1 times [2022-12-14 05:33:37,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:33:37,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724691689] [2022-12-14 05:33:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:37,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:37,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:33:37,575 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:33:37,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-14 05:33:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:39,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:39,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 05:33:39,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 05:33:39,215 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:33:39,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724691689] [2022-12-14 05:33:39,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724691689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:39,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [672043154] [2022-12-14 05:33:39,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:39,215 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:39,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:33:39,216 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:33:39,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 05:33:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:42,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 05:33:42,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 05:33:42,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 05:33:42,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [672043154] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:42,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871050021] [2022-12-14 05:33:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:42,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:33:42,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:33:42,197 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:33:42,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 05:33:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:43,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:33:43,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 05:33:43,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 05:33:43,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871050021] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:43,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:33:43,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2022-12-14 05:33:43,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766547385] [2022-12-14 05:33:43,937 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:33:43,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 05:33:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:33:43,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 05:33:43,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:33:43,938 INFO L87 Difference]: Start difference. First operand 539 states and 642 transitions. Second operand has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 05:33:45,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:33:45,210 INFO L93 Difference]: Finished difference Result 1835 states and 2262 transitions. [2022-12-14 05:33:45,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 05:33:45,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 181 [2022-12-14 05:33:45,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:33:45,215 INFO L225 Difference]: With dead ends: 1835 [2022-12-14 05:33:45,215 INFO L226 Difference]: Without dead ends: 1343 [2022-12-14 05:33:45,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-12-14 05:33:45,217 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1313 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:33:45,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 2274 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 05:33:45,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2022-12-14 05:33:45,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1205. [2022-12-14 05:33:45,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1160 states have (on average 1.1741379310344828) internal successors, (1362), 1167 states have internal predecessors, (1362), 39 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (53), 35 states have call predecessors, (53), 39 states have call successors, (53) [2022-12-14 05:33:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1454 transitions. [2022-12-14 05:33:45,270 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1454 transitions. Word has length 181 [2022-12-14 05:33:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:33:45,270 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1454 transitions. [2022-12-14 05:33:45,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 05:33:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1454 transitions. [2022-12-14 05:33:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-12-14 05:33:45,273 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:33:45,273 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:33:45,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:45,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-14 05:33:45,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-12-14 05:33:45,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:45,876 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:33:45,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:33:45,877 INFO L85 PathProgramCache]: Analyzing trace with hash -708936254, now seen corresponding path program 1 times [2022-12-14 05:33:45,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:33:45,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513701289] [2022-12-14 05:33:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:45,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:33:45,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:33:45,882 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:33:45,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-14 05:33:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:33:55,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 05:33:55,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:33:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-12-14 05:33:55,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:33:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-12-14 05:33:55,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:33:55,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513701289] [2022-12-14 05:33:55,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513701289] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:33:55,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [63923177] [2022-12-14 05:33:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:33:55,557 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:33:55,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:33:55,558 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:33:55,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 05:34:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:05,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 05:34:05,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-12-14 05:34:05,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-12-14 05:34:05,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [63923177] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:34:05,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512171262] [2022-12-14 05:34:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:34:05,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:05,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:05,126 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:05,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-14 05:34:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:34:13,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:34:13,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-12-14 05:34:13,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-12-14 05:34:13,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512171262] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:34:13,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:34:13,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2022-12-14 05:34:13,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594959545] [2022-12-14 05:34:13,933 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:34:13,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 05:34:13,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:34:13,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 05:34:13,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-12-14 05:34:13,934 INFO L87 Difference]: Start difference. First operand 1205 states and 1454 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 05:34:15,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:34:15,123 INFO L93 Difference]: Finished difference Result 2389 states and 3017 transitions. [2022-12-14 05:34:15,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 05:34:15,124 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 483 [2022-12-14 05:34:15,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:34:15,127 INFO L225 Difference]: With dead ends: 2389 [2022-12-14 05:34:15,127 INFO L226 Difference]: Without dead ends: 1225 [2022-12-14 05:34:15,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2874 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 05:34:15,129 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 40 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:34:15,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2548 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:34:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-12-14 05:34:15,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1217. [2022-12-14 05:34:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1172 states have (on average 1.1757679180887373) internal successors, (1378), 1179 states have internal predecessors, (1378), 39 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (53), 35 states have call predecessors, (53), 39 states have call successors, (53) [2022-12-14 05:34:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1470 transitions. [2022-12-14 05:34:15,186 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1470 transitions. Word has length 483 [2022-12-14 05:34:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:34:15,186 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1470 transitions. [2022-12-14 05:34:15,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 05:34:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1470 transitions. [2022-12-14 05:34:15,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-12-14 05:34:15,190 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:34:15,191 INFO L195 NwaCegarLoop]: trace histogram [36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:34:15,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-12-14 05:34:15,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-12-14 05:34:15,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-14 05:34:15,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:15,792 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:34:15,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:34:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1754575422, now seen corresponding path program 2 times [2022-12-14 05:34:15,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:34:15,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145516128] [2022-12-14 05:34:15,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:34:15,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:34:15,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:34:15,797 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:34:15,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-14 05:34:24,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:34:24,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:34:25,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 05:34:25,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-14 05:34:25,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-12-14 05:34:26,066 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:34:26,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145516128] [2022-12-14 05:34:26,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145516128] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:34:26,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1852191097] [2022-12-14 05:34:26,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:34:26,067 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:34:26,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:34:26,067 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:34:26,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-12-14 05:34:36,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:34:36,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:34:36,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 05:34:36,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-14 05:34:36,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-12-14 05:34:37,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1852191097] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:34:37,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352027914] [2022-12-14 05:34:37,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:34:37,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:34:37,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:34:37,163 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:34:37,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-14 05:34:46,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:34:46,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:34:46,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 05:34:46,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:34:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-12-14 05:34:47,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:34:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-12-14 05:34:48,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352027914] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:34:48,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:34:48,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2022-12-14 05:34:48,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026071312] [2022-12-14 05:34:48,351 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:34:48,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 05:34:48,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:34:48,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 05:34:48,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 05:34:48,359 INFO L87 Difference]: Start difference. First operand 1217 states and 1470 transitions. Second operand has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 05:35:03,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:35:03,193 INFO L93 Difference]: Finished difference Result 4750 states and 6231 transitions. [2022-12-14 05:35:03,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-14 05:35:03,193 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 507 [2022-12-14 05:35:03,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:35:03,200 INFO L225 Difference]: With dead ends: 4750 [2022-12-14 05:35:03,201 INFO L226 Difference]: Without dead ends: 3576 [2022-12-14 05:35:03,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3075 GetRequests, 3006 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 05:35:03,204 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 4440 mSDsluCounter, 20591 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 1448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4612 SdHoareTripleChecker+Valid, 21822 SdHoareTripleChecker+Invalid, 6571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1448 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:35:03,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4612 Valid, 21822 Invalid, 6571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1448 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-12-14 05:35:03,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2022-12-14 05:35:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3218. [2022-12-14 05:35:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3113 states have (on average 1.1692900738837135) internal successors, (3640), 3120 states have internal predecessors, (3640), 99 states have call successors, (99), 3 states have call predecessors, (99), 4 states have return successors, (137), 95 states have call predecessors, (137), 99 states have call successors, (137) [2022-12-14 05:35:03,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 3876 transitions. [2022-12-14 05:35:03,384 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 3876 transitions. Word has length 507 [2022-12-14 05:35:03,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:35:03,384 INFO L495 AbstractCegarLoop]: Abstraction has 3218 states and 3876 transitions. [2022-12-14 05:35:03,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 05:35:03,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 3876 transitions. [2022-12-14 05:35:03,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2022-12-14 05:35:03,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:35:03,402 INFO L195 NwaCegarLoop]: trace histogram [66, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:35:03,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2022-12-14 05:35:03,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-12-14 05:35:03,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-14 05:35:04,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:35:04,003 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:35:04,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:35:04,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1181150768, now seen corresponding path program 3 times [2022-12-14 05:35:04,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:35:04,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344144249] [2022-12-14 05:35:04,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:35:04,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 05:35:04,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:35:04,009 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 05:35:04,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae8ffc8c-f420-416b-a68f-ba7b4e7faf88/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process