./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 64bit --witnessprinter.graph.data.programhash 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 --- 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 05:09:04,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:09:04,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:09:04,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:09:04,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:09:04,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:09:04,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:09:04,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:09:04,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:09:04,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:09:04,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:09:04,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:09:04,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:09:04,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:09:04,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:09:04,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:09:04,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:09:04,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:09:04,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:09:04,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:09:04,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:09:04,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:09:04,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:09:04,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:09:04,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:09:04,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:09:04,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:09:04,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:09:04,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:09:04,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:09:04,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:09:04,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:09:04,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:09:04,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:09:04,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:09:04,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:09:04,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:09:04,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:09:04,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:09:04,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:09:04,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:09:04,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 05:09:04,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:09:04,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:09:04,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:09:04,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:09:04,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:09:04,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:09:04,792 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:09:04,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:09:04,792 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:09:04,793 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:09:04,793 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:09:04,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:09:04,793 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:09:04,793 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:09:04,794 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:09:04,794 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:09:04,794 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:09:04,794 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:09:04,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:09:04,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:09:04,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:09:04,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:09:04,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:09:04,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:09:04,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:09:04,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:09:04,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:09:04,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:09:04,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:09:04,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:09:04,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:09:04,797 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:09:04,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:09:04,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:09:04,798 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:09:04,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:09:04,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:09:04,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:09:04,799 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_780e72b4-e639-47e7-9c32-e1e4f9313e64/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 [2022-12-14 05:09:05,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:09:05,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:09:05,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:09:05,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:09:05,048 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:09:05,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-12-14 05:09:07,598 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:09:07,827 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:09:07,827 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-12-14 05:09:07,836 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/data/94be008a3/5598a40353094ee5be5ca121cf5179e7/FLAG2b1ef2607 [2022-12-14 05:09:08,201 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/data/94be008a3/5598a40353094ee5be5ca121cf5179e7 [2022-12-14 05:09:08,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:09:08,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:09:08,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:09:08,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:09:08,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:09:08,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c2bbc66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08, skipping insertion in model container [2022-12-14 05:09:08,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:09:08,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:09:08,366 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_780e72b4-e639-47e7-9c32-e1e4f9313e64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-12-14 05:09:08,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:09:08,564 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:09:08,576 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_780e72b4-e639-47e7-9c32-e1e4f9313e64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-12-14 05:09:08,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:09:08,698 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:09:08,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08 WrapperNode [2022-12-14 05:09:08,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:09:08,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:09:08,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:09:08,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:09:08,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,825 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1481 [2022-12-14 05:09:08,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:09:08,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:09:08,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:09:08,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:09:08,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,891 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:09:08,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:09:08,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:09:08,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:09:08,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (1/1) ... [2022-12-14 05:09:08,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:09:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:09:08,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:09:08,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:09:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:09:08,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:09:09,215 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:09:09,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:10:54,317 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:10:54,343 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:10:54,343 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:10:54,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:54 BoogieIcfgContainer [2022-12-14 05:10:54,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:10:54,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:10:54,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:10:54,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:10:54,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:09:08" (1/3) ... [2022-12-14 05:10:54,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7efe82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:10:54, skipping insertion in model container [2022-12-14 05:10:54,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:09:08" (2/3) ... [2022-12-14 05:10:54,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7efe82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:10:54, skipping insertion in model container [2022-12-14 05:10:54,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:54" (3/3) ... [2022-12-14 05:10:54,353 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-12-14 05:10:54,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:10:54,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:10:54,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:10:54,422 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;@11071239, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:10:54,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:10:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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 05:10:54,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 05:10:54,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:10:54,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 05:10:54,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:10:54,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:10:54,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 05:10:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:10:54,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090917171] [2022-12-14 05:10:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:10:54,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:10:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:10:54,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 05:10:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 05:10:54,738 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 05:10:54,739 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 05:10:54,741 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 05:10:54,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:10:54,746 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 05:10:54,749 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 05:10:54,764 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 05:10:54,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:10:54 BoogieIcfgContainer [2022-12-14 05:10:54,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 05:10:54,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 05:10:54,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 05:10:54,771 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 05:10:54,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:54" (3/4) ... [2022-12-14 05:10:54,774 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 05:10:54,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 05:10:54,775 INFO L158 Benchmark]: Toolchain (without parser) took 106567.81ms. Allocated memory was 130.0MB in the beginning and 813.7MB in the end (delta: 683.7MB). Free memory was 92.5MB in the beginning and 669.5MB in the end (delta: -577.0MB). Peak memory consumption was 108.1MB. Max. memory is 16.1GB. [2022-12-14 05:10:54,775 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:10:54,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.12ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 92.1MB in the beginning and 118.2MB in the end (delta: -26.1MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. [2022-12-14 05:10:54,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 126.17ms. Allocated memory is still 165.7MB. Free memory was 118.2MB in the beginning and 100.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 05:10:54,777 INFO L158 Benchmark]: Boogie Preprocessor took 87.87ms. Allocated memory is still 165.7MB. Free memory was 100.6MB in the beginning and 92.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 05:10:54,777 INFO L158 Benchmark]: RCFGBuilder took 105430.61ms. Allocated memory was 165.7MB in the beginning and 813.7MB in the end (delta: 648.0MB). Free memory was 92.2MB in the beginning and 712.5MB in the end (delta: -620.2MB). Peak memory consumption was 472.9MB. Max. memory is 16.1GB. [2022-12-14 05:10:54,777 INFO L158 Benchmark]: TraceAbstraction took 423.28ms. Allocated memory is still 813.7MB. Free memory was 711.4MB in the beginning and 670.5MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-12-14 05:10:54,778 INFO L158 Benchmark]: Witness Printer took 3.12ms. Allocated memory is still 813.7MB. Free memory was 670.5MB in the beginning and 669.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 05:10:54,780 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.12ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 92.1MB in the beginning and 118.2MB in the end (delta: -26.1MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 126.17ms. Allocated memory is still 165.7MB. Free memory was 118.2MB in the beginning and 100.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.87ms. Allocated memory is still 165.7MB. Free memory was 100.6MB in the beginning and 92.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 105430.61ms. Allocated memory was 165.7MB in the beginning and 813.7MB in the end (delta: 648.0MB). Free memory was 92.2MB in the beginning and 712.5MB in the end (delta: -620.2MB). Peak memory consumption was 472.9MB. Max. memory is 16.1GB. * TraceAbstraction took 423.28ms. Allocated memory is still 813.7MB. Free memory was 711.4MB in the beginning and 670.5MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 3.12ms. Allocated memory is still 813.7MB. Free memory was 670.5MB in the beginning and 669.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 210, overapproximation of bitwiseOr at line 205, overapproximation of bitwiseAnd at line 172. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_3 var_75 = 0; [L40] const SORT_4 var_77 = 50; [L41] const SORT_2 var_81 = 10; [L42] const SORT_4 var_85 = 1; [L43] const SORT_2 var_91 = 4; [L44] const SORT_4 var_93 = 2; [L45] const SORT_2 var_117 = 12; [L46] const SORT_2 var_140 = 2; [L47] const SORT_2 var_181 = 15; [L49] SORT_1 input_82; [L50] SORT_1 input_92; [L51] SORT_1 input_98; [L52] SORT_1 input_122; [L53] SORT_1 input_125; [L54] SORT_1 input_126; [L55] SORT_1 input_127; [L56] SORT_1 input_128; [L57] SORT_1 input_147; [L58] SORT_1 input_148; [L59] SORT_1 input_170; [L60] SORT_1 input_174; [L61] SORT_1 input_216; [L62] SORT_1 input_219; [L63] SORT_1 input_240; [L64] SORT_1 input_261; [L66] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L67] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_2 init_7_arg_1 = var_5; [L102] state_6 = init_7_arg_1 [L103] SORT_2 init_9_arg_1 = var_5; [L104] state_8 = init_9_arg_1 [L105] SORT_2 init_11_arg_1 = var_5; [L106] state_10 = init_11_arg_1 [L107] SORT_2 init_13_arg_1 = var_5; [L108] state_12 = init_13_arg_1 [L109] SORT_2 init_15_arg_1 = var_5; [L110] state_14 = init_15_arg_1 [L111] SORT_2 init_17_arg_1 = var_5; [L112] state_16 = init_17_arg_1 [L113] SORT_2 init_19_arg_1 = var_5; [L114] state_18 = init_19_arg_1 [L115] SORT_2 init_21_arg_1 = var_5; [L116] state_20 = init_21_arg_1 [L117] SORT_2 init_23_arg_1 = var_5; [L118] state_22 = init_23_arg_1 [L119] SORT_2 init_25_arg_1 = var_5; [L120] state_24 = init_25_arg_1 [L121] SORT_2 init_27_arg_1 = var_5; [L122] state_26 = init_27_arg_1 [L123] SORT_2 init_29_arg_1 = var_5; [L124] state_28 = init_29_arg_1 [L125] SORT_1 init_32_arg_1 = var_30; [L126] state_31 = init_32_arg_1 [L127] SORT_1 init_34_arg_1 = var_30; [L128] state_33 = init_34_arg_1 [L129] SORT_1 init_36_arg_1 = var_30; [L130] state_35 = init_36_arg_1 [L131] SORT_1 init_38_arg_1 = var_30; [L132] state_37 = init_38_arg_1 [L133] SORT_1 init_40_arg_1 = var_30; [L134] state_39 = init_40_arg_1 [L135] SORT_1 init_42_arg_1 = var_30; [L136] state_41 = init_42_arg_1 [L137] SORT_1 init_44_arg_1 = var_30; [L138] state_43 = init_44_arg_1 [L139] SORT_1 init_46_arg_1 = var_30; [L140] state_45 = init_46_arg_1 [L141] SORT_1 init_48_arg_1 = var_30; [L142] state_47 = init_48_arg_1 [L143] SORT_1 init_50_arg_1 = var_30; [L144] state_49 = init_50_arg_1 [L145] SORT_1 init_52_arg_1 = var_30; [L146] state_51 = init_52_arg_1 [L147] SORT_1 init_54_arg_1 = var_30; [L148] state_53 = init_54_arg_1 [L149] SORT_1 init_56_arg_1 = var_30; [L150] state_55 = init_56_arg_1 [L151] SORT_1 init_58_arg_1 = var_30; [L152] state_57 = init_58_arg_1 [L153] SORT_1 init_60_arg_1 = var_30; [L154] state_59 = init_60_arg_1 [L155] SORT_1 init_62_arg_1 = var_30; [L156] state_61 = init_62_arg_1 [L157] SORT_1 init_64_arg_1 = var_30; [L158] state_63 = init_64_arg_1 [L159] SORT_1 init_66_arg_1 = var_30; [L160] state_65 = init_66_arg_1 [L161] SORT_1 init_68_arg_1 = var_30; [L162] state_67 = init_68_arg_1 [L163] SORT_1 init_70_arg_1 = var_30; [L164] state_69 = init_70_arg_1 [L165] SORT_1 init_72_arg_1 = var_30; [L166] state_71 = init_72_arg_1 [L167] SORT_1 init_74_arg_1 = var_30; [L168] state_73 = init_74_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_8=0, var_117=12, var_140=2, var_181=15, var_30=0, var_5=0, var_75=0, var_77=50, var_81=10, var_85=1, var_91=4, var_93=2] [L171] input_82 = __VERIFIER_nondet_uchar() [L172] input_82 = input_82 & mask_SORT_1 [L173] input_92 = __VERIFIER_nondet_uchar() [L174] input_92 = input_92 & mask_SORT_1 [L175] input_98 = __VERIFIER_nondet_uchar() [L176] input_98 = input_98 & mask_SORT_1 [L177] input_122 = __VERIFIER_nondet_uchar() [L178] input_122 = input_122 & mask_SORT_1 [L179] input_125 = __VERIFIER_nondet_uchar() [L180] input_125 = input_125 & mask_SORT_1 [L181] input_126 = __VERIFIER_nondet_uchar() [L182] input_126 = input_126 & mask_SORT_1 [L183] input_127 = __VERIFIER_nondet_uchar() [L184] input_127 = input_127 & mask_SORT_1 [L185] input_128 = __VERIFIER_nondet_uchar() [L186] input_128 = input_128 & mask_SORT_1 [L187] input_147 = __VERIFIER_nondet_uchar() [L188] input_147 = input_147 & mask_SORT_1 [L189] input_148 = __VERIFIER_nondet_uchar() [L190] input_148 = input_148 & mask_SORT_1 [L191] input_170 = __VERIFIER_nondet_uchar() [L192] input_170 = input_170 & mask_SORT_1 [L193] input_174 = __VERIFIER_nondet_uchar() [L194] input_174 = input_174 & mask_SORT_1 [L195] input_216 = __VERIFIER_nondet_uchar() [L196] input_216 = input_216 & mask_SORT_1 [L197] input_219 = __VERIFIER_nondet_uchar() [L198] input_219 = input_219 & mask_SORT_1 [L199] input_240 = __VERIFIER_nondet_uchar() [L200] input_261 = __VERIFIER_nondet_uchar() [L203] SORT_3 var_76_arg_0 = var_75; [L204] SORT_2 var_76_arg_1 = state_28; [L205] SORT_4 var_76 = ((SORT_4)var_76_arg_0 << 8) | var_76_arg_1; [L206] var_76 = var_76 & mask_SORT_4 [L207] SORT_4 var_78_arg_0 = var_76; [L208] SORT_4 var_78_arg_1 = var_77; [L209] SORT_1 var_78 = var_78_arg_0 <= var_78_arg_1; [L210] SORT_1 var_79_arg_0 = ~state_73; [L211] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L212] SORT_1 var_79_arg_1 = ~var_78; [L213] var_79_arg_1 = var_79_arg_1 & mask_SORT_1 [L214] SORT_1 var_79 = var_79_arg_0 & var_79_arg_1; [L215] var_79 = var_79 & mask_SORT_1 [L216] SORT_1 bad_80_arg_0 = var_79; [L217] CALL __VERIFIER_assert(!(bad_80_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 05:10:54,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 64bit --witnessprinter.graph.data.programhash 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 --- 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 05:10:56,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:10:56,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:10:56,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:10:56,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:10:56,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:10:56,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:10:56,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:10:56,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:10:56,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:10:56,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:10:56,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:10:56,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:10:56,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:10:56,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:10:56,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:10:56,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:10:56,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:10:56,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:10:56,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:10:56,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:10:56,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:10:56,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:10:56,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:10:56,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:10:56,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:10:56,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:10:56,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:10:56,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:10:56,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:10:56,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:10:56,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:10:56,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:10:56,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:10:56,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:10:56,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:10:56,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:10:56,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:10:56,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:10:56,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:10:56,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:10:56,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 05:10:56,535 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:10:56,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:10:56,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:10:56,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:10:56,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:10:56,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:10:56,536 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:10:56,537 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:10:56,537 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:10:56,537 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:10:56,537 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:10:56,537 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:10:56,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:10:56,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:10:56,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:10:56,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:10:56,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:10:56,538 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 05:10:56,539 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 05:10:56,539 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 05:10:56,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:10:56,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:10:56,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:10:56,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:10:56,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 05:10:56,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:10:56,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:10:56,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:10:56,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:10:56,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:10:56,541 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 05:10:56,541 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 05:10:56,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:10:56,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:10:56,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 05:10:56,541 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_780e72b4-e639-47e7-9c32-e1e4f9313e64/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 [2022-12-14 05:10:56,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:10:56,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:10:56,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:10:56,792 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:10:56,793 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:10:56,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-12-14 05:10:59,357 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:10:59,547 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:10:59,548 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-12-14 05:10:59,557 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/data/edb307048/17303c00b4bb40dc8cdf99890e129d4a/FLAGcbc492e88 [2022-12-14 05:10:59,570 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/data/edb307048/17303c00b4bb40dc8cdf99890e129d4a [2022-12-14 05:10:59,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:10:59,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:10:59,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:10:59,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:10:59,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:10:59,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:59" (1/1) ... [2022-12-14 05:10:59,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a4df99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:59, skipping insertion in model container [2022-12-14 05:10:59,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:59" (1/1) ... [2022-12-14 05:10:59,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:10:59,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:10:59,733 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_780e72b4-e639-47e7-9c32-e1e4f9313e64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-12-14 05:10:59,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:10:59,927 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:10:59,935 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_780e72b4-e639-47e7-9c32-e1e4f9313e64/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-12-14 05:10:59,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:11:00,008 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:11:00,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00 WrapperNode [2022-12-14 05:11:00,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:11:00,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:11:00,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:11:00,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:11:00,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,091 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1481 [2022-12-14 05:11:00,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:11:00,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:11:00,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:11:00,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:11:00,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,133 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:11:00,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:11:00,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:11:00,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:11:00,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (1/1) ... [2022-12-14 05:11:00,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:11:00,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:11:00,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:11:00,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:11:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:11:00,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:11:00,451 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:11:00,454 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:11:01,611 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:11:01,616 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:11:01,616 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:11:01,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:11:01 BoogieIcfgContainer [2022-12-14 05:11:01,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:11:01,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:11:01,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:11:01,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:11:01,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:10:59" (1/3) ... [2022-12-14 05:11:01,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388f9088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:11:01, skipping insertion in model container [2022-12-14 05:11:01,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:00" (2/3) ... [2022-12-14 05:11:01,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388f9088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:11:01, skipping insertion in model container [2022-12-14 05:11:01,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:11:01" (3/3) ... [2022-12-14 05:11:01,623 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-12-14 05:11:01,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:11:01,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:11:01,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:11:01,675 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;@4ed06309, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:11:01,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:11:01,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 05:11:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 05:11:01,683 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:11:01,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 05:11:01,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:11:01,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:11:01,687 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 05:11:01,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:11:01,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558295024] [2022-12-14 05:11:01,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:11:01,701 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 05:11:01,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:11:01,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:11:01,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:11:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:11:01,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 05:11:01,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:11:02,045 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 05:11:02,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:11:02,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:11:02,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558295024] [2022-12-14 05:11:02,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558295024] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:11:02,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:11:02,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:11:02,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3307079] [2022-12-14 05:11:02,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:11:02,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:11:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:11:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:11:02,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:11:02,086 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 05:11:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:11:02,327 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 05:11:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:11:02,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-12-14 05:11:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:11:02,334 INFO L225 Difference]: With dead ends: 20 [2022-12-14 05:11:02,334 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 05:11:02,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:11:02,338 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:11:02,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:11:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 05:11:02,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 05:11:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:11:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 05:11:02,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 05:11:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:11:02,360 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 05:11:02,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 05:11:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 05:11:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 05:11:02,360 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:11:02,361 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 05:11:02,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:11:02,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:11:02,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:11:02,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:11:02,565 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 05:11:02,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:11:02,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117417037] [2022-12-14 05:11:02,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:11:02,584 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 05:11:02,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:11:02,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:11:02,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:11:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:11:03,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 05:11:03,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:11:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:11:03,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:11:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:11:04,335 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:11:04,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117417037] [2022-12-14 05:11:04,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117417037] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:11:04,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1188276683] [2022-12-14 05:11:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:11:04,336 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:11:04,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:11:04,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:11:04,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 05:11:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:11:05,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 05:11:05,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:11:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:11:05,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:11:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:11:08,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1188276683] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:11:08,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853915529] [2022-12-14 05:11:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:11:08,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:11:08,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:11:08,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:11:08,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:11:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:11:08,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 05:11:08,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:11:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:11:08,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:11:09,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:11:09,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853915529] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:11:09,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:11:09,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 13 [2022-12-14 05:11:09,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446940221] [2022-12-14 05:11:09,530 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:11:09,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 05:11:09,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:11:09,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 05:11:09,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=106, Unknown=1, NotChecked=0, Total=156 [2022-12-14 05:11:09,532 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:11:12,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:11:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:11:13,677 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 05:11:13,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:11:13,678 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 05:11:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:11:13,678 INFO L225 Difference]: With dead ends: 19 [2022-12-14 05:11:13,678 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 05:11:13,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=90, Invalid=181, Unknown=1, NotChecked=0, Total=272 [2022-12-14 05:11:13,680 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-14 05:11:13,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 18 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-12-14 05:11:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 05:11:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 05:11:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 05:11:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 05:11:13,683 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-12-14 05:11:13,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:11:13,683 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 05:11:13,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 05:11:13,683 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 05:11:13,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 05:11:13,683 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:11:13,684 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 05:11:13,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:11:13,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 05:11:14,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 05:11:14,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:11:14,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:11:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:11:14,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-12-14 05:11:14,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:11:14,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707199763] [2022-12-14 05:11:14,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:11:14,293 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 05:11:14,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:11:14,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:11:14,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:11:15,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:11:15,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:11:15,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-14 05:11:15,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:11:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:11:16,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:11:31,284 WARN L233 SmtUtils]: Spent 12.94s on a formula simplification that was a NOOP. DAG size: 169 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:11:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:11:31,316 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:11:31,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707199763] [2022-12-14 05:11:31,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707199763] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:11:31,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [462834958] [2022-12-14 05:11:31,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:11:31,316 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:11:31,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:11:31,317 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:11:31,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 05:11:33,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:11:33,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:11:33,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-14 05:11:33,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:11:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:11:34,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:12:12,332 WARN L233 SmtUtils]: Spent 25.48s on a formula simplification that was a NOOP. DAG size: 159 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:12:12,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:12:12,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [462834958] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:12:12,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431844404] [2022-12-14 05:12:12,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 05:12:12,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:12:12,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:12:12,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:12:12,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:12:13,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 05:12:13,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:12:13,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-14 05:12:13,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:12:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:12:15,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:12:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:12:29,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431844404] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:12:29,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:12:29,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 12, 12] total 44 [2022-12-14 05:12:29,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696101275] [2022-12-14 05:12:29,662 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:12:29,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 05:12:29,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:12:29,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 05:12:29,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=1342, Unknown=7, NotChecked=0, Total=1892 [2022-12-14 05:12:29,664 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 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 05:12:35,225 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse10 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_28~0#1|))) (let ((.cse2 ((_ zero_extend 24) ((_ extract 7 0) .cse10))) (.cse5 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_2~0#1|))) (let ((.cse16 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 .cse5))))) (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse4)) .cse5)))) (.cse7 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd |c_ULTIMATE.start_main_~var_76~0#1| |c_ULTIMATE.start_main_~var_85~0#1|)))))) (.cse0 (forall ((|v_ULTIMATE.start_main_~var_79_arg_0~0#1_13| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse16 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse16 (_ bv255 32)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_79_arg_0~0#1_13|)))))) (_ bv0 8)))) (.cse1 (bvshl |c_ULTIMATE.start_main_~var_75~0#1| (_ bv8 32)))) (and (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse1 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse3 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 .cse3))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3))))) .cse3)))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) .cse4) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse5)))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse5))) .cse1) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse0 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse1 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse6 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse7))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|)))))))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))))))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse1 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse8 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse8 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse8 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse8 .cse7))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|)))))))))))))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (= (bvadd |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (_ bv1 32)) (_ bv0 32)) (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ BitVec 32))) (bvule (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse1 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse9 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ bv8 32)) .cse10)) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse9))))) .cse9))))))))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse0 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_18| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32))) (bvule (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_18| (_ bv8 32)) .cse10) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse5))))) .cse5))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse5))) .cse1)) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse0 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse11 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 .cse11))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse11))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32)))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse11)))) .cse1) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (let ((.cse12 (exists ((|ULTIMATE.start_main_~var_491_arg_0~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~state_73~0#1_21| (_ BitVec 8))) (= |c_ULTIMATE.start_main_~state_73~0#1| ((_ extract 7 0) (bvand .cse16 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~var_491_arg_0~0#1|) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse16 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |v_ULTIMATE.start_main_~state_73~0#1_21|))))))))))))))))))) (or (and .cse12 (or (exists ((v_subst_6 (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl v_subst_7 (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl v_subst_6 (_ bv8 32)) (_ bv0 32))) (_ bv1 32)))))) (_ bv255 32))))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) (_ bv1 32)))))) (_ bv255 32)))))) (and (exists ((|ULTIMATE.start_main_~var_76_arg_0~0#1| (_ BitVec 32))) (bvule (bvand (bvor (bvshl |ULTIMATE.start_main_~var_76_arg_0~0#1| (_ bv8 32)) .cse13) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|)) (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse13)) (_ bv255 32))) |c_ULTIMATE.start_main_~state_28~0#1|)))) (exists ((v_subst_6 (_ BitVec 32)) (|ULTIMATE.start_main_~var_76_arg_0~0#1| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse14 (bvand (bvor (bvshl |ULTIMATE.start_main_~var_76_arg_0~0#1| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl v_subst_7 (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl v_subst_6 (_ bv8 32)) (_ bv0 32))) (_ bv1 32)))))) (_ bv255 32))))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) (_ bv1 32)))))) (_ bv255 32))))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|))) (and (= |c_ULTIMATE.start_main_~state_28~0#1| ((_ extract 7 0) (bvand (_ bv255 32) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (_ bv1 32) .cse14)))))))) (bvule .cse14 |c_ULTIMATE.start_main_~var_77~0#1|)))))) (and .cse12 (exists ((v_subst_8 (_ BitVec 32))) (let ((.cse15 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl v_subst_8 (_ bv8 32)) (_ bv0 32)) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) (_ bv1 32)))))) (_ bv255 32)))))) (and (= |c_ULTIMATE.start_main_~state_28~0#1| ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse15)) (_ bv255 32)))) (exists ((|ULTIMATE.start_main_~var_76_arg_0~0#1| (_ BitVec 32))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse15 (bvshl |ULTIMATE.start_main_~var_76_arg_0~0#1| (_ bv8 32)))) |c_ULTIMATE.start_main_~var_77~0#1|)))))) (and (= |c_ULTIMATE.start_main_~state_28~0#1| (_ bv0 8)) .cse12))) (or .cse0 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_18| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32))) (bvule (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_18| (_ bv8 32)) .cse10) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse5))))) .cse5))))) .cse5))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse17)) .cse5))) .cse1) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (or (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand (bvor .cse1 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse18 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse18 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 .cse18))))) |c_ULTIMATE.start_main_~var_85~0#1|)))))))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse18))))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|)) .cse0) (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse19 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ bv8 32)) .cse10)) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse19)))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse19))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse19)))) .cse1) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse20 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse20 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 .cse20))))) .cse20))))))))) .cse1) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (= (_ bv1 8) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|) (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse21 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse21 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 .cse21))))) .cse21))))))))) .cse1) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (= |c_ULTIMATE.start_main_~var_77~0#1| (_ bv50 32)) (= |c_ULTIMATE.start_main_~var_75~0#1| (_ bv0 32)) (or .cse0 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32))) (bvule (bvand (bvor .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32)) .cse17) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse5)))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (forall ((|v_ULTIMATE.start_main_~var_79_arg_0~0#1_13| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse16 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse16 (_ bv254 32)))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_79_arg_0~0#1_13|)))))) (_ bv0 8))) (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse22 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse22 .cse7))))) .cse22))))) .cse22)))) .cse1)) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse23 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse23 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse23 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse2 .cse23))))) |c_ULTIMATE.start_main_~var_85~0#1|)))))))))))))) .cse1) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (or (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse24 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ bv8 32)) .cse10)) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse24)))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse24))))) .cse24)))) .cse1) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|)) .cse0) (or .cse0 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_18| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse1 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse5 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_18| (_ bv8 32)) .cse10) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse5))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))))))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse5))))) |c_ULTIMATE.start_main_~var_77~0#1|)))))))) is different from false [2022-12-14 05:12:42,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:12:45,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:12:47,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:12:48,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:12:50,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:12:52,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:12:55,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:12:57,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:12:59,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:13:02,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:13:04,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:13:06,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:13:09,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:13:11,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:13:14,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:13:32,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:13:32,637 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-12-14 05:13:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 05:13:32,637 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 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 14 [2022-12-14 05:13:32,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:13:32,638 INFO L225 Difference]: With dead ends: 31 [2022-12-14 05:13:32,638 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 05:13:32,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 90.5s TimeCoverageRelationStatistics Valid=901, Invalid=2397, Unknown=12, NotChecked=112, Total=3422 [2022-12-14 05:13:32,639 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 39 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 25 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:13:32,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 50 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 99 Invalid, 13 Unknown, 1 Unchecked, 39.9s Time] [2022-12-14 05:13:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 05:13:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-12-14 05:13:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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 05:13:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-12-14 05:13:32,654 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-12-14 05:13:32,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:13:32,654 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-12-14 05:13:32,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 44 states have internal predecessors, (62), 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 05:13:32,654 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-12-14 05:13:32,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 05:13:32,655 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:13:32,655 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2022-12-14 05:13:32,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:13:32,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 05:13:33,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 05:13:33,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:13:33,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:13:33,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:13:33,259 INFO L85 PathProgramCache]: Analyzing trace with hash -752690141, now seen corresponding path program 3 times [2022-12-14 05:13:33,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:13:33,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591018032] [2022-12-14 05:13:33,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:13:33,265 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 05:13:33,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:13:33,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:13:33,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:13:36,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-14 05:13:36,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:13:36,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 8401 conjuncts, 121 conjunts are in the unsatisfiable core [2022-12-14 05:13:36,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:13:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:13:43,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:14:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:14:11,025 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 05:14:11,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591018032] [2022-12-14 05:14:11,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591018032] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:14:11,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [414614782] [2022-12-14 05:14:11,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:14:11,026 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 05:14:11,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 05:14:11,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 05:14:11,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 05:16:31,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-14 05:16:31,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:16:31,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 8401 conjuncts, 121 conjunts are in the unsatisfiable core [2022-12-14 05:16:31,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:16:34,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:16:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:16:50,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [414614782] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:16:50,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091914702] [2022-12-14 05:16:50,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 05:16:50,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:16:50,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:16:50,824 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:16:50,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 05:16:53,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-14 05:16:53,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:16:53,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 8401 conjuncts, 120 conjunts are in the unsatisfiable core [2022-12-14 05:16:53,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:16:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:16:58,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:17:48,646 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 746 DAG size of output: 506 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:18:21,187 WARN L233 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 960 DAG size of output: 659 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:18:38,766 WARN L233 SmtUtils]: Spent 7.44s on a formula simplification that was a NOOP. DAG size: 663 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:18:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:18:38,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091914702] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:18:38,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 05:18:38,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19, 19, 19, 19] total 51 [2022-12-14 05:18:38,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883747959] [2022-12-14 05:18:38,882 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 05:18:38,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 05:18:38,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 05:18:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 05:18:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1877, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 05:18:38,884 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 51 states have internal predecessors, (73), 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 05:19:13,031 WARN L233 SmtUtils]: Spent 10.42s on a formula simplification. DAG size of input: 1197 DAG size of output: 1121 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:19:15,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:19:17,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:19:19,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:19:21,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:19:23,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:19:25,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:19:27,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:19:29,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:19:31,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:19:33,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 05:19:49,393 WARN L233 SmtUtils]: Spent 13.51s on a formula simplification. DAG size of input: 703 DAG size of output: 611 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:20:10,166 WARN L233 SmtUtils]: Spent 18.68s on a formula simplification. DAG size of input: 773 DAG size of output: 756 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:20:12,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:15,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:17,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:19,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:21,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:23,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:25,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:27,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:29,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:31,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:33,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:35,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:36,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:20:50,891 WARN L233 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 488 DAG size of output: 460 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:21:09,809 WARN L233 SmtUtils]: Spent 13.88s on a formula simplification. DAG size of input: 617 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:21:12,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:14,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:16,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:18,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:20,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:22,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:24,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:26,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:28,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:30,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:31,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:33,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:21:47,069 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 403 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:01,839 WARN L233 SmtUtils]: Spent 8.20s on a formula simplification. DAG size of input: 456 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:04,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:06,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:09,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:10,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:12,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:14,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:17,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:19,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:21,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:23,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:24,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:50,331 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 325 DAG size of output: 303 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:22:52,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:56,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:58,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:22:59,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:23:11,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-12-14 05:23:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:23:24,124 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2022-12-14 05:23:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 05:23:24,125 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 51 states have internal predecessors, (73), 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 26 [2022-12-14 05:23:24,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:23:24,125 INFO L225 Difference]: With dead ends: 55 [2022-12-14 05:23:24,125 INFO L226 Difference]: Without dead ends: 53 [2022-12-14 05:23:24,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 80 SyntacticMatches, 21 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2439 ImplicationChecksByTransitivity, 298.7s TimeCoverageRelationStatistics Valid=1805, Invalid=4341, Unknown=16, NotChecked=0, Total=6162 [2022-12-14 05:23:24,127 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 118 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 82 mSolverCounterUnsat, 38 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 38 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:23:24,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 60 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 138 Invalid, 38 Unknown, 0 Unchecked, 117.0s Time] [2022-12-14 05:23:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-12-14 05:23:24,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-12-14 05:23:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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 05:23:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-12-14 05:23:24,164 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2022-12-14 05:23:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:23:24,164 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-12-14 05:23:24,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 51 states have internal predecessors, (73), 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 05:23:24,165 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-12-14 05:23:24,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 05:23:24,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:23:24,165 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1] [2022-12-14 05:23:24,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 05:23:24,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 05:23:24,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-12-14 05:23:24,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 05:23:24,769 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:23:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:23:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash -779438813, now seen corresponding path program 4 times [2022-12-14 05:23:24,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 05:23:24,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311411169] [2022-12-14 05:23:24,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 05:23:24,783 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 05:23:24,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 05:23:24,784 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/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 05:23:24,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_780e72b4-e639-47e7-9c32-e1e4f9313e64/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 05:23:30,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 05:23:30,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 05:23:30,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 17865 conjuncts, 232 conjunts are in the unsatisfiable core [2022-12-14 05:23:30,676 INFO L286 TraceCheckSpWp]: Computing forward predicates...