./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 b5237d83 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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba --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-b5237d8 [2022-11-22 02:01:05,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:01:05,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:01:05,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:01:05,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:01:05,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:01:05,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:01:05,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:01:05,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:01:05,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:01:05,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:01:05,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:01:05,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:01:05,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:01:05,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:01:05,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:01:05,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:01:05,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:01:05,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:01:05,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:01:05,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:01:05,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:01:05,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:01:05,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:01:05,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:01:05,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:01:05,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:01:05,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:01:05,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:01:05,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:01:05,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:01:05,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:01:05,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:01:05,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:01:05,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:01:05,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:01:05,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:01:05,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:01:05,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:01:05,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:01:05,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:01:05,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:01:05,807 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:01:05,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:01:05,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:01:05,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:01:05,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:01:05,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:01:05,809 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:01:05,810 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:01:05,810 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:01:05,810 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:01:05,811 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:01:05,812 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:01:05,812 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:01:05,812 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:01:05,812 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:01:05,813 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:01:05,813 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:01:05,813 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:01:05,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:01:05,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:01:05,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:01:05,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:01:05,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:01:05,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:01:05,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:01:05,816 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:01:05,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:01:05,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:01:05,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:01:05,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:01:05,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:01:05,818 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:01:05,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:01:05,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:01:05,818 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:01:05,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:01:05,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:01:05,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:01:05,820 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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 [2022-11-22 02:01:06,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:01:06,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:01:06,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:01:06,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:01:06,087 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:01:06,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-22 02:01:09,093 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:01:09,419 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:01:09,420 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-22 02:01:09,438 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/data/a64cf1550/cea9a134cb9e49fab23faa565fa9707f/FLAG4881aee2e [2022-11-22 02:01:09,478 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/data/a64cf1550/cea9a134cb9e49fab23faa565fa9707f [2022-11-22 02:01:09,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:01:09,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:01:09,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:01:09,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:01:09,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:01:09,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:01:09" (1/1) ... [2022-11-22 02:01:09,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3538b362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:09, skipping insertion in model container [2022-11-22 02:01:09,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:01:09" (1/1) ... [2022-11-22 02:01:09,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:01:09,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:01:09,757 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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-22 02:01:10,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:01:10,066 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:01:10,078 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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-22 02:01:10,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:01:10,217 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:01:10,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10 WrapperNode [2022-11-22 02:01:10,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:01:10,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:01:10,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:01:10,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:01:10,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,470 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1481 [2022-11-22 02:01:10,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:01:10,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:01:10,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:01:10,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:01:10,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,602 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:01:10,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:01:10,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:01:10,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:01:10,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (1/1) ... [2022-11-22 02:01:10,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:01:10,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:01:10,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:01:10,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:01:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:01:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:01:11,193 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:01:11,195 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:02:56,805 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:02:56,845 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:02:56,846 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:02:56,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:02:56 BoogieIcfgContainer [2022-11-22 02:02:56,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:02:56,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:02:56,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:02:56,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:02:56,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:01:09" (1/3) ... [2022-11-22 02:02:56,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20107a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:02:56, skipping insertion in model container [2022-11-22 02:02:56,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:01:10" (2/3) ... [2022-11-22 02:02:56,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20107a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:02:56, skipping insertion in model container [2022-11-22 02:02:56,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:02:56" (3/3) ... [2022-11-22 02:02:56,863 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-22 02:02:56,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:02:56,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:02:56,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:02:56,955 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;@625303fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:02:56,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:02:56,959 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) [2022-11-22 02:02:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:02:56,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:02:56,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:02:56,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:02:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:02:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-22 02:02:56,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:02:56,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150991419] [2022-11-22 02:02:56,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:02:56,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:02:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:02:57,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:02:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:02:57,445 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:02:57,447 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:02:57,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:02:57,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:02:57,458 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-22 02:02:57,462 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:02:57,487 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 02:02:57,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:02:57 BoogieIcfgContainer [2022-11-22 02:02:57,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:02:57,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:02:57,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:02:57,498 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:02:57,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:02:56" (3/4) ... [2022-11-22 02:02:57,502 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 02:02:57,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:02:57,504 INFO L158 Benchmark]: Toolchain (without parser) took 108016.39ms. Allocated memory was 172.0MB in the beginning and 952.1MB in the end (delta: 780.1MB). Free memory was 130.7MB in the beginning and 668.1MB in the end (delta: -537.3MB). Peak memory consumption was 244.5MB. Max. memory is 16.1GB. [2022-11-22 02:02:57,504 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 172.0MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:02:57,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 730.15ms. Allocated memory is still 172.0MB. Free memory was 130.4MB in the beginning and 82.1MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-11-22 02:02:57,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 251.79ms. Allocated memory was 172.0MB in the beginning and 234.9MB in the end (delta: 62.9MB). Free memory was 82.1MB in the beginning and 193.6MB in the end (delta: -111.5MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2022-11-22 02:02:57,506 INFO L158 Benchmark]: Boogie Preprocessor took 179.41ms. Allocated memory is still 234.9MB. Free memory was 193.6MB in the beginning and 185.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 02:02:57,507 INFO L158 Benchmark]: RCFGBuilder took 106197.12ms. Allocated memory was 234.9MB in the beginning and 952.1MB in the end (delta: 717.2MB). Free memory was 185.3MB in the beginning and 711.1MB in the end (delta: -525.7MB). Peak memory consumption was 573.2MB. Max. memory is 16.1GB. [2022-11-22 02:02:57,507 INFO L158 Benchmark]: TraceAbstraction took 646.96ms. Allocated memory is still 952.1MB. Free memory was 711.1MB in the beginning and 669.1MB in the end (delta: 42.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-22 02:02:57,508 INFO L158 Benchmark]: Witness Printer took 4.45ms. Allocated memory is still 952.1MB. Free memory was 669.1MB in the beginning and 668.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:02:57,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 172.0MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 730.15ms. Allocated memory is still 172.0MB. Free memory was 130.4MB in the beginning and 82.1MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 251.79ms. Allocated memory was 172.0MB in the beginning and 234.9MB in the end (delta: 62.9MB). Free memory was 82.1MB in the beginning and 193.6MB in the end (delta: -111.5MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 179.41ms. Allocated memory is still 234.9MB. Free memory was 193.6MB in the beginning and 185.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 106197.12ms. Allocated memory was 234.9MB in the beginning and 952.1MB in the end (delta: 717.2MB). Free memory was 185.3MB in the beginning and 711.1MB in the end (delta: -525.7MB). Peak memory consumption was 573.2MB. Max. memory is 16.1GB. * TraceAbstraction took 646.96ms. Allocated memory is still 952.1MB. Free memory was 711.1MB in the beginning and 669.1MB in the end (delta: 42.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Witness Printer took 4.45ms. Allocated memory is still 952.1MB. Free memory was 669.1MB in the beginning and 668.1MB 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: 0.5s, 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, 0.2s 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 [2022-11-22 02:02:57,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba --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-b5237d8 [2022-11-22 02:02:59,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:02:59,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:03:00,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:03:00,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:03:00,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:03:00,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:03:00,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:03:00,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:03:00,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:03:00,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:03:00,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:03:00,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:03:00,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:03:00,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:03:00,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:03:00,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:03:00,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:03:00,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:03:00,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:03:00,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:03:00,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:03:00,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:03:00,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:03:00,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:03:00,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:03:00,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:03:00,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:03:00,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:03:00,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:03:00,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:03:00,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:03:00,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:03:00,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:03:00,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:03:00,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:03:00,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:03:00,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:03:00,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:03:00,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:03:00,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:03:00,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-22 02:03:00,072 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:03:00,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:03:00,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:03:00,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:03:00,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:03:00,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:03:00,075 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:03:00,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:03:00,075 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:03:00,075 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:03:00,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:03:00,076 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:03:00,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:03:00,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:03:00,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:03:00,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:03:00,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:03:00,078 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:03:00,079 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 02:03:00,079 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 02:03:00,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:03:00,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:03:00,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:03:00,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:03:00,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 02:03:00,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:03:00,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:03:00,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:03:00,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:03:00,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:03:00,082 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 02:03:00,082 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 02:03:00,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:03:00,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:03:00,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 02:03:00,084 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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00dd9581d22f64efd69082a191ec7029f41a290244aef7e9060b3ab5ce6080c4 [2022-11-22 02:03:00,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:03:00,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:03:00,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:03:00,490 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:03:00,491 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:03:00,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-22 02:03:03,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:03:04,024 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:03:04,025 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-22 02:03:04,036 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/data/bb579c863/50ec96a4870d4401aea1e289602e1119/FLAGf8646d258 [2022-11-22 02:03:04,056 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/data/bb579c863/50ec96a4870d4401aea1e289602e1119 [2022-11-22 02:03:04,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:03:04,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:03:04,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:03:04,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:03:04,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:03:04,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:04,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25478d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04, skipping insertion in model container [2022-11-22 02:03:04,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:04,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:03:04,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:03:04,365 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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-22 02:03:04,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:03:04,704 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:03:04,714 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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.3.prop1-func-interl.c[1014,1027] [2022-11-22 02:03:04,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:03:04,915 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:03:04,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04 WrapperNode [2022-11-22 02:03:04,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:03:04,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:03:04,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:03:04,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:03:04,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:04,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:05,047 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1481 [2022-11-22 02:03:05,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:03:05,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:03:05,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:03:05,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:03:05,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:05,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:05,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:05,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:05,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:05,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:05,160 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:05,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:05,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:03:05,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:03:05,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:03:05,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:03:05,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (1/1) ... [2022-11-22 02:03:05,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:03:05,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:03:05,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:03:05,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:03:05,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:03:05,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:03:05,695 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:03:05,697 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:03:07,913 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:03:07,922 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:03:07,923 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:03:07,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:03:07 BoogieIcfgContainer [2022-11-22 02:03:07,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:03:07,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:03:07,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:03:07,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:03:07,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:03:04" (1/3) ... [2022-11-22 02:03:07,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec97da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:03:07, skipping insertion in model container [2022-11-22 02:03:07,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:03:04" (2/3) ... [2022-11-22 02:03:07,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec97da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:03:07, skipping insertion in model container [2022-11-22 02:03:07,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:03:07" (3/3) ... [2022-11-22 02:03:07,933 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.3.prop1-func-interl.c [2022-11-22 02:03:07,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:03:07,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:03:07,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:03:08,002 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;@ecb246b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:03:08,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:03:08,007 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) [2022-11-22 02:03:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:03:08,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:08,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:03:08,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:03:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:08,019 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-22 02:03:08,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:03:08,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923527485] [2022-11-22 02:03:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:08,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:03:08,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:03:08,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:03:08,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-22 02:03:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:08,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-22 02:03:08,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:03:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:03:08,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:03:08,548 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:03:08,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923527485] [2022-11-22 02:03:08,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923527485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:03:08,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:03:08,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:03:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941838847] [2022-11-22 02:03:08,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:03:08,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:03:08,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:03:08,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:03:08,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:03:08,592 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) [2022-11-22 02:03:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:08,908 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-22 02:03:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:03:08,911 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 [2022-11-22 02:03:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:08,917 INFO L225 Difference]: With dead ends: 20 [2022-11-22 02:03:08,918 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 02:03:08,920 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 [2022-11-22 02:03:08,923 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:08,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:03:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 02:03:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-22 02:03:08,950 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) [2022-11-22 02:03:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 02:03:08,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-22 02:03:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:08,953 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 02:03:08,953 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) [2022-11-22 02:03:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 02:03:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:03:08,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:08,954 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:03:08,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:03:09,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:03:09,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:03:09,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:09,167 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-22 02:03:09,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:03:09,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165477827] [2022-11-22 02:03:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:09,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:03:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:03:09,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:03:09,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-22 02:03:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:10,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-22 02:03:10,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:03:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:03:10,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:03:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:03:11,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:03:11,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165477827] [2022-11-22 02:03:11,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165477827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:03:11,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1059681556] [2022-11-22 02:03:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:11,781 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:03:11,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:03:11,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:03:11,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-22 02:03:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:13,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-22 02:03:13,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:03:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:03:13,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:03:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:03:18,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1059681556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:03:18,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495728810] [2022-11-22 02:03:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:03:18,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:03:18,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:03:18,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:03:18,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:03:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:03:18,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-22 02:03:18,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:03:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:03:19,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:03:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:03:20,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495728810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:03:20,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:03:20,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 13 [2022-11-22 02:03:20,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018675525] [2022-11-22 02:03:20,274 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:03:20,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:03:20,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:03:20,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:03:20,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=106, Unknown=2, NotChecked=0, Total=156 [2022-11-22 02:03:20,277 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) [2022-11-22 02:03:22,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:03:24,524 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 [0, 1] [2022-11-22 02:03:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:03:26,089 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-22 02:03:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:03:26,090 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 [2022-11-22 02:03:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:03:26,090 INFO L225 Difference]: With dead ends: 19 [2022-11-22 02:03:26,091 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 02:03:26,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=89, Invalid=181, Unknown=2, NotChecked=0, Total=272 [2022-11-22 02:03:26,092 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:03:26,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 18 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-22 02:03:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 02:03:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-22 02:03:26,098 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) [2022-11-22 02:03:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-22 02:03:26,098 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-22 02:03:26,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:03:26,099 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-22 02:03:26,099 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) [2022-11-22 02:03:26,100 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-22 02:03:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:03:26,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:03:26,101 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-22 02:03:26,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-22 02:03:26,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:03:26,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:03:26,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:03:26,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:03:26,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:03:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-22 02:03:26,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:03:26,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669360129] [2022-11-22 02:03:26,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:03:26,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:03:26,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:03:26,726 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:03:26,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-22 02:03:28,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:03:28,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:03:28,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-22 02:03:28,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:03:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:03:29,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:03:45,905 WARN L233 SmtUtils]: Spent 13.27s 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) [2022-11-22 02:03:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:03:45,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:03:45,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669360129] [2022-11-22 02:03:45,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669360129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:03:45,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1662812393] [2022-11-22 02:03:45,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:03:45,955 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:03:45,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:03:45,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:03:45,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-22 02:03:48,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:03:48,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:03:49,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-22 02:03:49,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:03:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:03:50,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:04:56,041 WARN L233 SmtUtils]: Spent 51.26s on a formula simplification. DAG size of input: 159 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:04:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:04:56,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1662812393] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:04:56,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687079454] [2022-11-22 02:04:56,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:04:56,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:04:56,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:04:56,090 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:04:56,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:04:57,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 02:04:57,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:04:57,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-22 02:04:57,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:05:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:05:00,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:05:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:05:18,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687079454] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:05:18,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:05:18,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 12, 12] total 44 [2022-11-22 02:05:18,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094159555] [2022-11-22 02:05:18,122 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:05:18,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-22 02:05:18,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:05:18,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-22 02:05:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=542, Invalid=1343, Unknown=7, NotChecked=0, Total=1892 [2022-11-22 02:05:18,126 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) [2022-11-22 02:05:24,794 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse10 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_28~0#1|))) (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) .cse10))) (.cse3 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_2~0#1|))) (let ((.cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse5 .cse3)))) (.cse8 ((_ 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|))))))) (let ((.cse16 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse8 .cse3)))) (.cse23 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse2)) .cse3)))) (.cse1 (bvshl |c_ULTIMATE.start_main_~var_75~0#1| (_ bv8 32)))) (let ((.cse18 (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse23)) .cse3))) .cse1)) (.cse17 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse4)) .cse3)))) (.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))))) (and (or .cse0 (forall ((|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 .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 ((_ 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)) .cse2) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3)))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3)))) |c_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)) (|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) (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_16| (_ 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 .cse4 (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3))))) |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 ((.cse6 ((_ 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 .cse5 .cse6))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse6))))) .cse6)))))) |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)) .cse2) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3)))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3))) .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 ((.cse7 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse7 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse7 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse7 .cse8))) (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 ((.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 .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 .cse8))) (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 ((|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|))))) .cse3))))) .cse3))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3))) .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 .cse5 .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_16| (_ 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 |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32)) .cse17)) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3))) .cse1) |c_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_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|))))) .cse3))))) .cse3))))) .cse3))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse0 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32))) (bvule (bvand .cse18 |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 ((.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 (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse19 ((_ 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 .cse5 .cse19))))) |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|))))) .cse19))))) |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 ((.cse20 ((_ 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|))))) .cse20)))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse20))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse20)))) .cse1) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse0 (bvule (bvand .cse18 |c_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 ((.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 .cse5 .cse21))))) .cse21))))))))) .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 ((.cse22 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse22 ((_ 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 .cse5 .cse22))))) .cse22))))))))) .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)) .cse23) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3)))) |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))) (bvule (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_16| (_ bv8 32)) .cse23)) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse3))) .cse1)) |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 ((.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) (bvand .cse24 .cse8))))) .cse24))))) .cse24)))) .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 ((.cse25 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse25 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse25 ((_ 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 .cse5 .cse25))))) |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 .cse0 (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) .cse17))))) .cse1) |c_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 ((.cse26 ((_ 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|))))) .cse26)))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse26))))) .cse26)))) .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 .cse3 ((_ 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|))))) .cse3))) (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|))))) .cse3))))) |c_ULTIMATE.start_main_~var_77~0#1|))))))))) is different from false [2022-11-22 02:05:33,758 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] [2022-11-22 02:05:36,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:05:38,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:05:41,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:05:44,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:05:47,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:05:50,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:05:52,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:05:55,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:05:57,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:06:00,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:06:03,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:06:05,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:06:07,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:06:09,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:06:30,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:30,639 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-22 02:06:30,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:06:30,640 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 [2022-11-22 02:06:30,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:30,641 INFO L225 Difference]: With dead ends: 31 [2022-11-22 02:06:30,641 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 02:06:30,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1503 ImplicationChecksByTransitivity, 125.8s TimeCoverageRelationStatistics Valid=900, Invalid=2398, Unknown=12, NotChecked=112, Total=3422 [2022-11-22 02:06:30,644 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 73 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 45 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 45.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:30,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 50 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 97 Invalid, 15 Unknown, 1 Unchecked, 45.9s Time] [2022-11-22 02:06:30,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 02:06:30,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-22 02:06:30,658 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) [2022-11-22 02:06:30,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-22 02:06:30,659 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-22 02:06:30,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:30,660 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-22 02:06:30,660 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) [2022-11-22 02:06:30,660 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-22 02:06:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 02:06:30,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:30,662 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2022-11-22 02:06:30,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-22 02:06:30,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:06:31,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:06:31,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -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_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:06:31,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:06:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash -752690141, now seen corresponding path program 3 times [2022-11-22 02:06:31,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:06:31,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527403848] [2022-11-22 02:06:31,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:06:31,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:06:31,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:06:31,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:06:31,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-22 02:06:35,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-22 02:06:35,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:06:35,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 8401 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-22 02:06:35,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:43,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:07:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:07:16,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:07:16,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527403848] [2022-11-22 02:07:16,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527403848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:07:16,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1185903623] [2022-11-22 02:07:16,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:07:16,670 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:07:16,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:07:16,675 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:07:16,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-22 02:09:54,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-22 02:09:54,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:09:54,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 8401 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-22 02:09:54,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:09:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:09:58,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:10:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:10:17,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1185903623] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:10:17,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817786774] [2022-11-22 02:10:17,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:10:17,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:10:17,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:10:17,873 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:10:17,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafc5cdf-69a0-47d1-9ee9-9918fe018717/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 02:10:21,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-22 02:10:21,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:10:21,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 8401 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-22 02:10:21,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:10:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:10:27,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:11:03,127 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 532 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:11:28,641 WARN L233 SmtUtils]: Spent 9.43s 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) [2022-11-22 02:11:45,138 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification that was a NOOP. DAG size: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:12:07,639 WARN L233 SmtUtils]: Spent 12.57s 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) [2022-11-22 02:12:28,164 WARN L233 SmtUtils]: Spent 7.01s 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) [2022-11-22 02:12:28,315 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:12:28,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817786774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:12:28,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:12:28,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19, 19, 19, 19] total 51 [2022-11-22 02:12:28,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424043688] [2022-11-22 02:12:28,317 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:12:28,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-22 02:12:28,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:12:28,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-22 02:12:28,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1877, Unknown=1, NotChecked=0, Total=2550 [2022-11-22 02:12:28,320 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) [2022-11-22 02:13:22,143 WARN L233 SmtUtils]: Spent 26.80s on a formula simplification. DAG size of input: 1603 DAG size of output: 1141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:13:24,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:13:27,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:13:29,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:13:31,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:13:33,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:13:35,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:13:38,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:13:54,542 WARN L233 SmtUtils]: Spent 14.63s on a formula simplification. DAG size of input: 619 DAG size of output: 579 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:14:23,880 WARN L233 SmtUtils]: Spent 25.99s on a formula simplification. DAG size of input: 773 DAG size of output: 756 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:14:26,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:14:28,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:14:30,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:14:32,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:14:34,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:14:36,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:14:38,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:14:53,514 WARN L233 SmtUtils]: Spent 9.35s on a formula simplification. DAG size of input: 460 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:15:13,299 WARN L233 SmtUtils]: Spent 14.00s 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) [2022-11-22 02:15:15,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:15:16,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:15:19,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:15:21,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:15:23,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:15:24,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:15:26,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:15:28,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:15:30,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:15:45,740 WARN L233 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 380 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:16:01,453 WARN L233 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 456 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:16:04,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-22 02:16:07,023 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]