./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e0d39156332f28801fd53c29750c6296a22718f3bae9c3fa206403e85d3b017 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:27:03,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:27:03,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:27:03,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:27:03,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:27:03,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:27:03,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:27:03,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:27:03,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:27:03,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:27:03,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:27:03,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:27:03,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:27:03,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:27:03,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:27:03,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:27:03,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:27:03,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:27:03,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:27:03,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:27:03,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:27:03,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:27:03,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:27:03,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:27:03,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:27:03,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:27:03,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:27:03,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:27:03,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:27:03,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:27:03,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:27:03,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:27:03,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:27:03,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:27:03,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:27:03,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:27:03,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:27:03,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:27:03,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:27:03,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:27:03,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:27:03,811 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:27:03,833 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:27:03,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:27:03,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:27:03,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:27:03,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:27:03,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:27:03,835 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:27:03,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:27:03,835 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:27:03,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:27:03,836 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:27:03,836 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:27:03,836 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:27:03,836 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:27:03,836 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:27:03,837 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:27:03,837 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:27:03,837 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:27:03,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:27:03,838 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:27:03,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:27:03,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:27:03,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:27:03,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:27:03,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:27:03,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:27:03,839 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:27:03,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:27:03,839 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:27:03,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:27:03,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:27:03,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:27:03,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:27:03,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:27:03,841 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:27:03,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:27:03,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:27:03,841 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:27:03,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:27:03,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:27:03,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:27:03,842 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_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0d39156332f28801fd53c29750c6296a22718f3bae9c3fa206403e85d3b017 [2022-12-14 08:27:04,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:27:04,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:27:04,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:27:04,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:27:04,038 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:27:04,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c [2022-12-14 08:27:06,608 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:27:06,791 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:27:06,791 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c [2022-12-14 08:27:06,799 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/data/0e7fdc182/6e58091df05e4680803c71b6ab818d97/FLAGea2413b80 [2022-12-14 08:27:06,813 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/data/0e7fdc182/6e58091df05e4680803c71b6ab818d97 [2022-12-14 08:27:06,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:27:06,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:27:06,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:27:06,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:27:06,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:27:06,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:27:06" (1/1) ... [2022-12-14 08:27:06,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f4f29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:06, skipping insertion in model container [2022-12-14 08:27:06,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:27:06" (1/1) ... [2022-12-14 08:27:06,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:27:06,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:27:06,980 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_9029354a-a523-4766-839b-1eb61dcd9f4e/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[1995,2008] [2022-12-14 08:27:06,984 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_9029354a-a523-4766-839b-1eb61dcd9f4e/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[2364,2377] [2022-12-14 08:27:07,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:27:07,022 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:27:07,036 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_9029354a-a523-4766-839b-1eb61dcd9f4e/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[1995,2008] [2022-12-14 08:27:07,038 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_9029354a-a523-4766-839b-1eb61dcd9f4e/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[2364,2377] [2022-12-14 08:27:07,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:27:07,074 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:27:07,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07 WrapperNode [2022-12-14 08:27:07,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:27:07,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:27:07,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:27:07,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:27:07,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,115 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 187 [2022-12-14 08:27:07,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:27:07,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:27:07,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:27:07,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:27:07,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:27:07,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:27:07,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:27:07,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:27:07,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (1/1) ... [2022-12-14 08:27:07,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:27:07,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:27:07,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:27:07,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:27:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:27:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 08:27:07,207 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 08:27:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:27:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:27:07,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:27:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 08:27:07,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 08:27:07,270 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:27:07,272 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:27:07,584 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:27:07,775 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:27:07,776 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 08:27:07,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:27:07 BoogieIcfgContainer [2022-12-14 08:27:07,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:27:07,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:27:07,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:27:07,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:27:07,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:27:06" (1/3) ... [2022-12-14 08:27:07,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d29b115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:27:07, skipping insertion in model container [2022-12-14 08:27:07,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:07" (2/3) ... [2022-12-14 08:27:07,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d29b115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:27:07, skipping insertion in model container [2022-12-14 08:27:07,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:27:07" (3/3) ... [2022-12-14 08:27:07,786 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_5a.c.cil.c [2022-12-14 08:27:07,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:27:07,800 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 08:27:07,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:27:07,846 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;@180a59e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:27:07,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 08:27:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 08:27:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 08:27:07,855 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:27:07,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 08:27:07,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:27:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:27:07,862 INFO L85 PathProgramCache]: Analyzing trace with hash 10135056, now seen corresponding path program 1 times [2022-12-14 08:27:07,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:27:07,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117529662] [2022-12-14 08:27:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:27:07,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:27:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:27:07,961 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:27:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:27:07,982 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 08:27:07,983 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:27:07,984 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 08:27:07,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 08:27:07,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:27:07,989 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 08:27:07,993 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:27:08,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:27:08 BoogieIcfgContainer [2022-12-14 08:27:08,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:27:08,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:27:08,006 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:27:08,006 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:27:08,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:27:07" (3/4) ... [2022-12-14 08:27:08,009 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:27:08,009 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:27:08,010 INFO L158 Benchmark]: Toolchain (without parser) took 1193.25ms. Allocated memory was 140.5MB in the beginning and 176.2MB in the end (delta: 35.7MB). Free memory was 107.4MB in the beginning and 113.4MB in the end (delta: -6.0MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2022-12-14 08:27:08,010 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:27:08,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.45ms. Allocated memory is still 140.5MB. Free memory was 106.9MB in the beginning and 92.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 08:27:08,011 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.04ms. Allocated memory is still 140.5MB. Free memory was 92.8MB in the beginning and 90.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:27:08,012 INFO L158 Benchmark]: Boogie Preprocessor took 28.45ms. Allocated memory is still 140.5MB. Free memory was 90.7MB in the beginning and 88.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:27:08,012 INFO L158 Benchmark]: RCFGBuilder took 632.88ms. Allocated memory was 140.5MB in the beginning and 176.2MB in the end (delta: 35.7MB). Free memory was 88.6MB in the beginning and 128.1MB in the end (delta: -39.4MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2022-12-14 08:27:08,013 INFO L158 Benchmark]: TraceAbstraction took 225.12ms. Allocated memory is still 176.2MB. Free memory was 127.0MB in the beginning and 113.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 08:27:08,013 INFO L158 Benchmark]: Witness Printer took 3.45ms. Allocated memory is still 176.2MB. Free memory was 113.4MB in the beginning and 113.4MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:27:08,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 140.5MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.45ms. Allocated memory is still 140.5MB. Free memory was 106.9MB in the beginning and 92.8MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.04ms. Allocated memory is still 140.5MB. Free memory was 92.8MB in the beginning and 90.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.45ms. Allocated memory is still 140.5MB. Free memory was 90.7MB in the beginning and 88.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 632.88ms. Allocated memory was 140.5MB in the beginning and 176.2MB in the end (delta: 35.7MB). Free memory was 88.6MB in the beginning and 128.1MB in the end (delta: -39.4MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. * TraceAbstraction took 225.12ms. Allocated memory is still 176.2MB. Free memory was 127.0MB in the beginning and 113.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.45ms. Allocated memory is still 176.2MB. Free memory was 113.4MB in the beginning and 113.4MB in the end (delta: 2.6kB). 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: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=45occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 08:27:08,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e0d39156332f28801fd53c29750c6296a22718f3bae9c3fa206403e85d3b017 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:27:09,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:27:09,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:27:09,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:27:09,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:27:09,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:27:09,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:27:09,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:27:09,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:27:09,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:27:09,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:27:09,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:27:09,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:27:09,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:27:09,812 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:27:09,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:27:09,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:27:09,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:27:09,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:27:09,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:27:09,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:27:09,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:27:09,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:27:09,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:27:09,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:27:09,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:27:09,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:27:09,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:27:09,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:27:09,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:27:09,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:27:09,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:27:09,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:27:09,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:27:09,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:27:09,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:27:09,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:27:09,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:27:09,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:27:09,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:27:09,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:27:09,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 08:27:09,857 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:27:09,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:27:09,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:27:09,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:27:09,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:27:09,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:27:09,858 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:27:09,858 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:27:09,859 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:27:09,859 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:27:09,859 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:27:09,859 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:27:09,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:27:09,860 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:27:09,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:27:09,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:27:09,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:27:09,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:27:09,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:27:09,861 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:27:09,861 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:27:09,861 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:27:09,861 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:27:09,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:27:09,862 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:27:09,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:27:09,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:27:09,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:27:09,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:27:09,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:27:09,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:27:09,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:27:09,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:27:09,867 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:27:09,868 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:27:09,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:27:09,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:27:09,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:27:09,868 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_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0d39156332f28801fd53c29750c6296a22718f3bae9c3fa206403e85d3b017 [2022-12-14 08:27:10,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:27:10,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:27:10,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:27:10,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:27:10,140 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:27:10,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c [2022-12-14 08:27:12,735 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:27:12,914 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:27:12,915 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c [2022-12-14 08:27:12,922 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/data/199ae9576/f0d14e1d152744b48abd4bb6eb38c1f9/FLAGaef6efb4b [2022-12-14 08:27:12,935 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/data/199ae9576/f0d14e1d152744b48abd4bb6eb38c1f9 [2022-12-14 08:27:12,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:27:12,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:27:12,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:27:12,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:27:12,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:27:12,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:27:12" (1/1) ... [2022-12-14 08:27:12,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62744a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:12, skipping insertion in model container [2022-12-14 08:27:12,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:27:12" (1/1) ... [2022-12-14 08:27:12,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:27:12,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:27:13,101 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_9029354a-a523-4766-839b-1eb61dcd9f4e/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[1995,2008] [2022-12-14 08:27:13,106 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_9029354a-a523-4766-839b-1eb61dcd9f4e/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[2364,2377] [2022-12-14 08:27:13,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:27:13,156 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:27:13,170 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_9029354a-a523-4766-839b-1eb61dcd9f4e/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[1995,2008] [2022-12-14 08:27:13,171 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_9029354a-a523-4766-839b-1eb61dcd9f4e/sv-benchmarks/c/combinations/square_8+soft_float_5a.c.cil.c[2364,2377] [2022-12-14 08:27:13,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:27:13,209 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:27:13,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13 WrapperNode [2022-12-14 08:27:13,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:27:13,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:27:13,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:27:13,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:27:13,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,249 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-12-14 08:27:13,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:27:13,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:27:13,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:27:13,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:27:13,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,275 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:27:13,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:27:13,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:27:13,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:27:13,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (1/1) ... [2022-12-14 08:27:13,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:27:13,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:27:13,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:27:13,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:27:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:27:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 08:27:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-14 08:27:13,348 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-14 08:27:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:27:13,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:27:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 08:27:13,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 08:27:13,417 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:27:13,419 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:27:15,862 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:27:15,866 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:27:15,866 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 08:27:15,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:27:15 BoogieIcfgContainer [2022-12-14 08:27:15,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:27:15,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:27:15,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:27:15,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:27:15,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:27:12" (1/3) ... [2022-12-14 08:27:15,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe9d6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:27:15, skipping insertion in model container [2022-12-14 08:27:15,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:27:13" (2/3) ... [2022-12-14 08:27:15,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe9d6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:27:15, skipping insertion in model container [2022-12-14 08:27:15,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:27:15" (3/3) ... [2022-12-14 08:27:15,873 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_5a.c.cil.c [2022-12-14 08:27:15,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:27:15,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 08:27:15,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:27:15,923 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;@78e2cf5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:27:15,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 08:27:15,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 08:27:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:27:15,932 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:27:15,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:27:15,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:27:15,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:27:15,936 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-12-14 08:27:15,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:27:15,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322106972] [2022-12-14 08:27:15,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:27:15,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:27:15,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:27:15,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:27:15,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 08:27:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:27:16,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 08:27:16,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:27:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:27:16,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:27:16,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:27:16,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322106972] [2022-12-14 08:27:16,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322106972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:27:16,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:27:16,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:27:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760789551] [2022-12-14 08:27:16,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:27:16,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 08:27:16,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:27:16,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 08:27:16,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:27:16,464 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:27:16,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:27:16,490 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2022-12-14 08:27:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 08:27:16,492 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-12-14 08:27:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:27:16,499 INFO L225 Difference]: With dead ends: 117 [2022-12-14 08:27:16,499 INFO L226 Difference]: Without dead ends: 52 [2022-12-14 08:27:16,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:27:16,503 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:27:16,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:27:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-14 08:27:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-12-14 08:27:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 08:27:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2022-12-14 08:27:16,534 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2022-12-14 08:27:16,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:27:16,534 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2022-12-14 08:27:16,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:27:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2022-12-14 08:27:16,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:27:16,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:27:16,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:27:16,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:27:16,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:27:16,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:27:16,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:27:16,738 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-12-14 08:27:16,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:27:16,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101051594] [2022-12-14 08:27:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:27:16,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:27:16,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:27:16,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:27:16,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 08:28:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:28:49,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:28:50,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:29:24,384 WARN L233 SmtUtils]: Spent 10.47s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:29:58,060 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-12-14 08:30:00,109 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-12-14 08:30:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:30:00,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:30:00,110 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:30:00,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101051594] [2022-12-14 08:30:00,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101051594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:30:00,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:30:00,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:30:00,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716202220] [2022-12-14 08:30:00,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:30:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:30:00,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:30:00,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:30:00,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=13, Unknown=7, NotChecked=8, Total=42 [2022-12-14 08:30:00,113 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:30:02,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:04,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:06,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:08,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:10,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:16,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:19,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:30:21,203 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse0)) (.cse2 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) .cse1 (or (and (or (not .cse1) (not .cse2)) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (and .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse2)) .cse2 (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-12-14 08:30:23,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:25,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:27,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:29,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:31,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:33,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:35,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:37,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:39,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:41,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:43,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:45,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:47,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:50,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:52,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:54,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:56,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:30:58,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:00,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:02,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:04,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:06,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:08,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:10,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:12,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:14,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:16,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:18,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:20,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:23,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:25,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:27,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:29,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:31,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:33,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:35,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:37,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:39,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:41,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:43,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:45,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:47,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:49,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:51,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:53,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:55,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:31:58,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:00,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:02,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:04,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:06,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:08,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:10,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:12,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:14,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:16,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:18,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:20,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:22,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:24,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:26,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:28,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 08:32:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:28,923 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-12-14 08:32:28,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:32:28,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 7 [2022-12-14 08:32:28,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:28,925 INFO L225 Difference]: With dead ends: 52 [2022-12-14 08:32:28,925 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 08:32:28,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=21, Invalid=19, Unknown=10, NotChecked=22, Total=72 [2022-12-14 08:32:28,926 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 67 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 69 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 69 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 142.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:28,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 178 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 69 Unknown, 70 Unchecked, 142.2s Time] [2022-12-14 08:32:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 08:32:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-12-14 08:32:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 08:32:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2022-12-14 08:32:28,939 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 7 [2022-12-14 08:32:28,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:28,939 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2022-12-14 08:32:28,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:32:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2022-12-14 08:32:28,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-14 08:32:28,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:28,941 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:28,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-12-14 08:32:29,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:29,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:29,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1370969986, now seen corresponding path program 1 times [2022-12-14 08:32:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:29,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237749321] [2022-12-14 08:32:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:29,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:29,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:29,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:29,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 08:32:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:29,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:32:29,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:29,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:32:29,339 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:29,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237749321] [2022-12-14 08:32:29,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237749321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:32:29,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:32:29,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:32:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599833506] [2022-12-14 08:32:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:32:29,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:32:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:29,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:32:29,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:32:29,341 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 08:32:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:29,699 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2022-12-14 08:32:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:32:29,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2022-12-14 08:32:29,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:29,703 INFO L225 Difference]: With dead ends: 104 [2022-12-14 08:32:29,703 INFO L226 Difference]: Without dead ends: 61 [2022-12-14 08:32:29,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:32:29,704 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 16 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:29,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 146 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:32:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-14 08:32:29,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2022-12-14 08:32:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 08:32:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2022-12-14 08:32:29,713 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 43 [2022-12-14 08:32:29,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:29,713 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2022-12-14 08:32:29,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 08:32:29,714 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2022-12-14 08:32:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 08:32:29,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:29,715 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:29,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-12-14 08:32:29,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:29,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash -14997806, now seen corresponding path program 1 times [2022-12-14 08:32:29,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:29,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635995344] [2022-12-14 08:32:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:29,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:29,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:29,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:29,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 08:32:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:29,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:32:29,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:30,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:32:30,129 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:30,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635995344] [2022-12-14 08:32:30,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635995344] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:32:30,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:32:30,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:32:30,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450827873] [2022-12-14 08:32:30,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:32:30,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:32:30,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:30,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:32:30,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:32:30,132 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 08:32:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:30,489 INFO L93 Difference]: Finished difference Result 108 states and 153 transitions. [2022-12-14 08:32:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:32:30,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-12-14 08:32:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:30,492 INFO L225 Difference]: With dead ends: 108 [2022-12-14 08:32:30,492 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 08:32:30,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:32:30,494 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 10 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:30,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 160 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:32:30,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 08:32:30,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-12-14 08:32:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 08:32:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2022-12-14 08:32:30,502 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2022-12-14 08:32:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:30,502 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-12-14 08:32:30,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 08:32:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2022-12-14 08:32:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-14 08:32:30,503 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:30,503 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:30,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 08:32:30,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:30,705 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:30,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1638472845, now seen corresponding path program 1 times [2022-12-14 08:32:30,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:30,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202507045] [2022-12-14 08:32:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:30,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:30,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:30,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:30,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 08:32:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:30,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:32:30,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:30,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:32:30,914 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:30,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202507045] [2022-12-14 08:32:30,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202507045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:32:30,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:32:30,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:32:30,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139473042] [2022-12-14 08:32:30,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:32:30,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:32:30,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:30,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:32:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:32:30,916 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 08:32:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:31,298 INFO L93 Difference]: Finished difference Result 117 states and 165 transitions. [2022-12-14 08:32:31,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:32:31,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-12-14 08:32:31,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:31,300 INFO L225 Difference]: With dead ends: 117 [2022-12-14 08:32:31,300 INFO L226 Difference]: Without dead ends: 68 [2022-12-14 08:32:31,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:32:31,302 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 17 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:31,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 153 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:32:31,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-14 08:32:31,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2022-12-14 08:32:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 50 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 08:32:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2022-12-14 08:32:31,309 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 80 transitions. Word has length 47 [2022-12-14 08:32:31,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:31,309 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 80 transitions. [2022-12-14 08:32:31,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 08:32:31,309 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 80 transitions. [2022-12-14 08:32:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-14 08:32:31,310 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:31,310 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:31,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-14 08:32:31,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:31,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:31,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash 388661875, now seen corresponding path program 1 times [2022-12-14 08:32:31,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:31,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014174595] [2022-12-14 08:32:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:31,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:31,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:31,518 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:31,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 08:32:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:31,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:32:31,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:31,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:32:31,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:31,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014174595] [2022-12-14 08:32:31,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014174595] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:32:31,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:32:31,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:32:31,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200377701] [2022-12-14 08:32:31,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:32:31,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:32:31,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:32:31,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:32:31,816 INFO L87 Difference]: Start difference. First operand 58 states and 80 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 08:32:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:32,522 INFO L93 Difference]: Finished difference Result 125 states and 176 transitions. [2022-12-14 08:32:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:32:32,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-12-14 08:32:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:32,524 INFO L225 Difference]: With dead ends: 125 [2022-12-14 08:32:32,525 INFO L226 Difference]: Without dead ends: 75 [2022-12-14 08:32:32,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:32:32,526 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:32,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 202 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 08:32:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-14 08:32:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2022-12-14 08:32:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.38) internal successors, (69), 51 states have internal predecessors, (69), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 08:32:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2022-12-14 08:32:32,536 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 48 [2022-12-14 08:32:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:32,536 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2022-12-14 08:32:32,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 08:32:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2022-12-14 08:32:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 08:32:32,538 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:32,538 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:32,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 08:32:32,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:32,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:32,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:32,740 INFO L85 PathProgramCache]: Analyzing trace with hash 933318672, now seen corresponding path program 1 times [2022-12-14 08:32:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:32,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940745475] [2022-12-14 08:32:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:32,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:32,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:32,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:32,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 08:32:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:32,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:32:32,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:33,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:32:33,656 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:33,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940745475] [2022-12-14 08:32:33,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940745475] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:33,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [40025202] [2022-12-14 08:32:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:33,657 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:32:33,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:32:33,658 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:32:33,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-14 08:32:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:33,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 08:32:33,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 08:32:33,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:32:33,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [40025202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:32:33,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:32:33,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-12-14 08:32:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76977062] [2022-12-14 08:32:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:32:33,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:32:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:32:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 08:32:33,855 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 08:32:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:33,877 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2022-12-14 08:32:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:32:33,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-12-14 08:32:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:33,879 INFO L225 Difference]: With dead ends: 79 [2022-12-14 08:32:33,879 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 08:32:33,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 08:32:33,881 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 13 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:33,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:32:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 08:32:33,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-12-14 08:32:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.36) internal successors, (68), 51 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 08:32:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2022-12-14 08:32:33,887 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 49 [2022-12-14 08:32:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:33,888 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2022-12-14 08:32:33,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 08:32:33,888 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2022-12-14 08:32:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 08:32:33,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:33,889 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:33,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2022-12-14 08:32:34,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-12-14 08:32:34,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:34,292 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:34,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1543994934, now seen corresponding path program 1 times [2022-12-14 08:32:34,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:34,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141740639] [2022-12-14 08:32:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:34,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:34,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:34,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:34,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 08:32:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:34,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:32:34,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:34,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:32:35,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:35,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141740639] [2022-12-14 08:32:35,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141740639] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:35,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1702320423] [2022-12-14 08:32:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:35,180 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:32:35,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:32:35,181 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:32:35,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-12-14 08:32:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:35,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:32:35,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 08:32:35,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:32:35,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1702320423] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:32:35,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:32:35,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-12-14 08:32:35,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151202275] [2022-12-14 08:32:35,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:32:35,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:32:35,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:35,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:32:35,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-14 08:32:35,485 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 08:32:35,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:35,630 INFO L93 Difference]: Finished difference Result 80 states and 110 transitions. [2022-12-14 08:32:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:32:35,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2022-12-14 08:32:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:35,632 INFO L225 Difference]: With dead ends: 80 [2022-12-14 08:32:35,632 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 08:32:35,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:32:35,633 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 32 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:35,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:32:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 08:32:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-12-14 08:32:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.34) internal successors, (67), 51 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-14 08:32:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2022-12-14 08:32:35,640 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 51 [2022-12-14 08:32:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:35,640 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2022-12-14 08:32:35,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 08:32:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2022-12-14 08:32:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 08:32:35,641 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:35,641 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:35,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-12-14 08:32:35,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-12-14 08:32:36,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:36,044 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:36,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:36,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2130800948, now seen corresponding path program 1 times [2022-12-14 08:32:36,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:36,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680836567] [2022-12-14 08:32:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:36,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:36,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:36,050 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:36,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 08:32:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:36,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:32:36,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:36,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:32:36,833 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:36,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680836567] [2022-12-14 08:32:36,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680836567] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:36,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [485278082] [2022-12-14 08:32:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:36,834 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:32:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:32:36,835 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:32:36,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-12-14 08:32:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:36,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:32:36,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 08:32:37,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:32:37,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [485278082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:32:37,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:32:37,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5] total 13 [2022-12-14 08:32:37,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718565734] [2022-12-14 08:32:37,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:32:37,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 08:32:37,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:37,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 08:32:37,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:32:37,477 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 08:32:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:38,033 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2022-12-14 08:32:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:32:38,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2022-12-14 08:32:38,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:38,035 INFO L225 Difference]: With dead ends: 104 [2022-12-14 08:32:38,035 INFO L226 Difference]: Without dead ends: 86 [2022-12-14 08:32:38,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:32:38,036 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:38,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 331 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:32:38,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-14 08:32:38,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2022-12-14 08:32:38,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.278688524590164) internal successors, (78), 63 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-14 08:32:38,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 96 transitions. [2022-12-14 08:32:38,048 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 96 transitions. Word has length 51 [2022-12-14 08:32:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:38,048 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 96 transitions. [2022-12-14 08:32:38,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 08:32:38,049 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 96 transitions. [2022-12-14 08:32:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 08:32:38,049 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:38,049 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:38,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-14 08:32:38,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-12-14 08:32:38,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:32:38,452 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:38,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:38,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1771139338, now seen corresponding path program 1 times [2022-12-14 08:32:38,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:38,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593385915] [2022-12-14 08:32:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:38,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:38,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:38,455 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:38,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 08:32:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:38,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:32:38,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:38,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:32:39,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:39,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593385915] [2022-12-14 08:32:39,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593385915] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:39,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [11058027] [2022-12-14 08:32:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:39,373 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:32:39,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:32:39,374 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:32:39,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-12-14 08:32:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:39,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:32:39,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 08:32:40,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 08:32:40,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [11058027] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:40,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637262978] [2022-12-14 08:32:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:40,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:32:40,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:32:40,403 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:32:40,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 08:32:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:40,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:32:40,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:40,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:32:40,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637262978] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:40,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:32:40,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 6, 5, 5] total 12 [2022-12-14 08:32:40,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904617516] [2022-12-14 08:32:40,917 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:32:40,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 08:32:40,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:40,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 08:32:40,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-12-14 08:32:40,918 INFO L87 Difference]: Start difference. First operand 72 states and 96 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 08:32:43,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:43,418 INFO L93 Difference]: Finished difference Result 172 states and 235 transitions. [2022-12-14 08:32:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 08:32:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 51 [2022-12-14 08:32:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:43,421 INFO L225 Difference]: With dead ends: 172 [2022-12-14 08:32:43,421 INFO L226 Difference]: Without dead ends: 108 [2022-12-14 08:32:43,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-12-14 08:32:43,422 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 78 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:43,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 357 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 08:32:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-12-14 08:32:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 80. [2022-12-14 08:32:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 71 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-14 08:32:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2022-12-14 08:32:43,433 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 51 [2022-12-14 08:32:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:43,434 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2022-12-14 08:32:43,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 08:32:43,434 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2022-12-14 08:32:43,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 08:32:43,435 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:43,435 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:43,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 08:32:43,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-12-14 08:32:43,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-12-14 08:32:44,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:44,037 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:44,039 INFO L85 PathProgramCache]: Analyzing trace with hash 482568913, now seen corresponding path program 1 times [2022-12-14 08:32:44,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:44,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934930814] [2022-12-14 08:32:44,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:44,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:44,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:44,042 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:44,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 08:32:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:44,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:32:44,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:44,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:45,212 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:32:45,212 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:45,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934930814] [2022-12-14 08:32:45,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934930814] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:45,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [451870622] [2022-12-14 08:32:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:45,213 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:32:45,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:32:45,214 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:32:45,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-12-14 08:32:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:45,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:32:45,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 08:32:45,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:32:45,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [451870622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:32:45,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 08:32:45,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-12-14 08:32:45,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232731124] [2022-12-14 08:32:45,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:32:45,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:32:45,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:45,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:32:45,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-14 08:32:45,658 INFO L87 Difference]: Start difference. First operand 80 states and 108 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 08:32:45,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:45,960 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2022-12-14 08:32:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:32:45,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2022-12-14 08:32:45,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:45,962 INFO L225 Difference]: With dead ends: 93 [2022-12-14 08:32:45,962 INFO L226 Difference]: Without dead ends: 87 [2022-12-14 08:32:45,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:32:45,963 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:45,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 231 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:32:45,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-12-14 08:32:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2022-12-14 08:32:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 76 states have internal predecessors, (95), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-14 08:32:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 113 transitions. [2022-12-14 08:32:45,972 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 113 transitions. Word has length 55 [2022-12-14 08:32:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:45,973 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 113 transitions. [2022-12-14 08:32:45,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 08:32:45,973 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 113 transitions. [2022-12-14 08:32:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 08:32:45,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:45,974 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:45,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2022-12-14 08:32:46,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-14 08:32:46,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:46,375 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:46,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash 539827215, now seen corresponding path program 1 times [2022-12-14 08:32:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:46,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633235408] [2022-12-14 08:32:46,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:46,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:46,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:46,380 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:46,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 08:32:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:46,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:32:46,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:46,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:32:47,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:47,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633235408] [2022-12-14 08:32:47,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633235408] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:47,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1695357769] [2022-12-14 08:32:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:47,297 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:32:47,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:32:47,298 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:32:47,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-12-14 08:32:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:47,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:32:47,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:47,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:32:47,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1695357769] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472929799] [2022-12-14 08:32:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:47,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:32:47,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:32:47,914 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:32:47,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 08:32:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:47,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:32:47,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 08:32:48,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-14 08:32:49,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472929799] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 08:32:49,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2022-12-14 08:32:49,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6, 6, 8] total 17 [2022-12-14 08:32:49,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531067536] [2022-12-14 08:32:49,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:32:49,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:32:49,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:49,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:32:49,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-12-14 08:32:49,165 INFO L87 Difference]: Start difference. First operand 85 states and 113 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 08:32:49,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:49,551 INFO L93 Difference]: Finished difference Result 91 states and 118 transitions. [2022-12-14 08:32:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 08:32:49,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2022-12-14 08:32:49,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:49,553 INFO L225 Difference]: With dead ends: 91 [2022-12-14 08:32:49,553 INFO L226 Difference]: Without dead ends: 73 [2022-12-14 08:32:49,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-12-14 08:32:49,554 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:49,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 296 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:32:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-12-14 08:32:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-12-14 08:32:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 65 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-14 08:32:49,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2022-12-14 08:32:49,562 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 55 [2022-12-14 08:32:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:49,562 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2022-12-14 08:32:49,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-14 08:32:49,562 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2022-12-14 08:32:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 08:32:49,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:49,563 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:49,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-14 08:32:49,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-14 08:32:49,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-12-14 08:32:50,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:32:50,166 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:32:50,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:32:50,167 INFO L85 PathProgramCache]: Analyzing trace with hash -979005146, now seen corresponding path program 1 times [2022-12-14 08:32:50,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:32:50,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200983171] [2022-12-14 08:32:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:50,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:32:50,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:32:50,171 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:32:50,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-14 08:32:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:50,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:32:50,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:32:50,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 08:32:51,256 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:32:51,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200983171] [2022-12-14 08:32:51,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200983171] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:51,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [256363458] [2022-12-14 08:32:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:51,256 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:32:51,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:32:51,258 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:32:51,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-12-14 08:32:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:51,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 08:32:51,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 08:32:52,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 08:32:52,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [256363458] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:52,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760740149] [2022-12-14 08:32:52,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:32:52,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:32:52,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:32:52,648 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:32:52,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 08:32:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:32:52,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 08:32:52,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:32:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 08:32:52,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:32:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 08:32:53,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760740149] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:32:53,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:32:53,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 16 [2022-12-14 08:32:53,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518723552] [2022-12-14 08:32:53,249 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:32:53,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 08:32:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:32:53,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 08:32:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-12-14 08:32:53,251 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 08:32:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:32:59,501 INFO L93 Difference]: Finished difference Result 180 states and 238 transitions. [2022-12-14 08:32:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 08:32:59,502 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 60 [2022-12-14 08:32:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:32:59,504 INFO L225 Difference]: With dead ends: 180 [2022-12-14 08:32:59,504 INFO L226 Difference]: Without dead ends: 93 [2022-12-14 08:32:59,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=294, Invalid=1112, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 08:32:59,505 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 108 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:32:59,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 459 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 08:32:59,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-14 08:32:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2022-12-14 08:32:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.265625) internal successors, (81), 66 states have internal predecessors, (81), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-14 08:32:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2022-12-14 08:32:59,512 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 60 [2022-12-14 08:32:59,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:32:59,513 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2022-12-14 08:32:59,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-14 08:32:59,513 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2022-12-14 08:32:59,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 08:32:59,513 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:32:59,513 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:32:59,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-14 08:32:59,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-14 08:32:59,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2022-12-14 08:33:00,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:33:00,116 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:33:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:33:00,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1446076250, now seen corresponding path program 1 times [2022-12-14 08:33:00,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:33:00,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408191852] [2022-12-14 08:33:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:33:00,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:33:00,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:33:00,119 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 08:33:00,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-14 08:33:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:33:00,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 08:33:00,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:33:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 08:33:00,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:33:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 08:33:02,245 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:33:02,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408191852] [2022-12-14 08:33:02,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408191852] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:33:02,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1655744282] [2022-12-14 08:33:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:33:02,246 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:33:02,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:33:02,247 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:33:02,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-12-14 08:33:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:33:02,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:33:02,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:33:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 08:33:03,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:33:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 08:33:04,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1655744282] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:33:04,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060088096] [2022-12-14 08:33:04,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:33:04,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:33:04,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:33:04,324 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:33:04,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-14 08:33:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:33:04,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 08:33:04,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:33:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 08:33:04,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:33:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 08:33:05,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060088096] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:33:05,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:33:05,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-12-14 08:33:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401351543] [2022-12-14 08:33:05,217 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:33:05,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 08:33:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:33:05,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 08:33:05,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-12-14 08:33:05,219 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 08:33:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:33:11,337 INFO L93 Difference]: Finished difference Result 185 states and 242 transitions. [2022-12-14 08:33:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 08:33:11,339 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2022-12-14 08:33:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:33:11,339 INFO L225 Difference]: With dead ends: 185 [2022-12-14 08:33:11,339 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 08:33:11,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 403 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 08:33:11,341 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 162 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:33:11,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 553 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-14 08:33:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 08:33:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 08:33:11,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:33:11,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 08:33:11,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2022-12-14 08:33:11,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:33:11,342 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 08:33:11,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-14 08:33:11,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 08:33:11,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 08:33:11,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 08:33:11,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 08:33:11,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-14 08:33:11,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-12-14 08:33:11,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-12-14 08:33:11,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 08:33:11,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 08:33:16,784 INFO L895 garLoopResultBuilder]: At program point L122(lines 71 124) the Hoare annotation is: (or (and (= base2flt_~e |base2flt_#in~e|) (= base2flt_~__retres4~0 (_ bv0 32)) (= base2flt_~m (bvshl (bvshl |base2flt_#in~m| (_ bv1 32)) (_ bv1 32)))) (not (= |base2flt_#in~m| (_ bv0 32))) (not (= currentRoundingMode roundNearestTiesToEven))) [2022-12-14 08:33:16,785 INFO L899 garLoopResultBuilder]: For program point L81(lines 80 95) no Hoare annotation was computed. [2022-12-14 08:33:16,785 INFO L899 garLoopResultBuilder]: For program point L102(lines 100 115) no Hoare annotation was computed. [2022-12-14 08:33:16,785 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 94) no Hoare annotation was computed. [2022-12-14 08:33:16,785 INFO L895 garLoopResultBuilder]: At program point L90-1(lines 80 95) the Hoare annotation is: (let ((.cse0 (not (= currentRoundingMode roundNearestTiesToEven)))) (and (or (not (= |base2flt_#in~m| (_ bv0 32))) .cse0) (or .cse0 (bvult base2flt_~m (_ bv16777216 32)) (not (= |base2flt_#in~m| (_ bv1 32)))))) [2022-12-14 08:33:16,785 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 118) no Hoare annotation was computed. [2022-12-14 08:33:16,785 INFO L895 garLoopResultBuilder]: At program point L116(lines 78 118) the Hoare annotation is: (or (not (= |base2flt_#in~m| (_ bv0 32))) (not (= currentRoundingMode roundNearestTiesToEven))) [2022-12-14 08:33:16,785 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 67 125) the Hoare annotation is: true [2022-12-14 08:33:16,785 INFO L899 garLoopResultBuilder]: For program point base2fltFINAL(lines 67 125) no Hoare annotation was computed. [2022-12-14 08:33:16,786 INFO L895 garLoopResultBuilder]: At program point L100-2(lines 100 115) the Hoare annotation is: (or (let ((.cse0 (not (= |base2flt_#in~e| (_ bv0 32))))) (and (or (not (bvsle base2flt_~e (_ bv4294967168 32))) .cse0) (or (not (bvsle (bvadd (_ bv4294967292 32) base2flt_~e) (_ bv4294967168 32))) .cse0) (not (bvult |base2flt_#in~m| (_ bv16777216 32))))) (not (= currentRoundingMode roundNearestTiesToEven))) [2022-12-14 08:33:16,786 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 67 125) no Hoare annotation was computed. [2022-12-14 08:33:16,786 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 77) no Hoare annotation was computed. [2022-12-14 08:33:16,786 INFO L899 garLoopResultBuilder]: For program point L101(lines 100 115) no Hoare annotation was computed. [2022-12-14 08:33:16,786 INFO L902 garLoopResultBuilder]: At program point main1_returnLabel#1(lines 37 51) the Hoare annotation is: true [2022-12-14 08:33:16,786 INFO L895 garLoopResultBuilder]: At program point L283(line 283) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2022-12-14 08:33:16,786 INFO L899 garLoopResultBuilder]: For program point L283-1(line 283) no Hoare annotation was computed. [2022-12-14 08:33:16,786 INFO L899 garLoopResultBuilder]: For program point L300(lines 300 309) no Hoare annotation was computed. [2022-12-14 08:33:16,786 INFO L895 garLoopResultBuilder]: At program point L300-2(lines 300 309) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~tmp___0~0#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~tmp___1~0#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2022-12-14 08:33:16,786 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 207) no Hoare annotation was computed. [2022-12-14 08:33:16,787 INFO L899 garLoopResultBuilder]: For program point L201-2(lines 200 261) no Hoare annotation was computed. [2022-12-14 08:33:16,787 INFO L895 garLoopResultBuilder]: At program point L259(lines 200 261) the Hoare annotation is: (let ((.cse0 (= currentRoundingMode roundNearestTiesToEven))) (or (and (= (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (= |ULTIMATE.start_main2_~tmp~2#1| (_ bv1 32)) .cse0) (and (= (bvadd (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (_ bv0 32)) .cse0) (and (= |ULTIMATE.start_mulflt_~__retres10~1#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) .cse0))) [2022-12-14 08:33:16,787 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 08:33:16,787 INFO L895 garLoopResultBuilder]: At program point L284(line 284) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2022-12-14 08:33:16,787 INFO L899 garLoopResultBuilder]: For program point L284-1(line 284) no Hoare annotation was computed. [2022-12-14 08:33:16,787 INFO L895 garLoopResultBuilder]: At program point mulflt_returnLabel#1(lines 190 262) the Hoare annotation is: (let ((.cse0 (= currentRoundingMode roundNearestTiesToEven))) (or (and (= (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (= |ULTIMATE.start_main2_~tmp~2#1| (_ bv1 32)) .cse0) (and (= (_ bv0 32) |ULTIMATE.start_mulflt_#res#1|) (= |ULTIMATE.start_mulflt_~__retres10~1#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) .cse0) (and (= (bvadd (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (_ bv0 32)) .cse0))) [2022-12-14 08:33:16,787 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 08:33:16,787 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 233) no Hoare annotation was computed. [2022-12-14 08:33:16,787 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 295) no Hoare annotation was computed. [2022-12-14 08:33:16,787 INFO L899 garLoopResultBuilder]: For program point L286-2(lines 286 295) no Hoare annotation was computed. [2022-12-14 08:33:16,787 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 307) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L237(lines 237 254) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L303-2(lines 303 307) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L237-2(lines 237 254) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L320(lines 320 326) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 251) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L238(lines 238 243) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 227) no Hoare annotation was computed. [2022-12-14 08:33:16,788 INFO L902 garLoopResultBuilder]: At program point main2_returnLabel#1(lines 263 319) the Hoare annotation is: true [2022-12-14 08:33:16,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2022-12-14 08:33:16,789 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 325) no Hoare annotation was computed. [2022-12-14 08:33:16,789 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 35) no Hoare annotation was computed. [2022-12-14 08:33:16,789 INFO L899 garLoopResultBuilder]: For program point L289(lines 289 293) no Hoare annotation was computed. [2022-12-14 08:33:16,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 08:33:16,789 INFO L899 garLoopResultBuilder]: For program point L289-2(lines 289 293) no Hoare annotation was computed. [2022-12-14 08:33:16,789 INFO L895 garLoopResultBuilder]: At program point L281(line 281) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-12-14 08:33:16,790 INFO L899 garLoopResultBuilder]: For program point L281-1(line 281) no Hoare annotation was computed. [2022-12-14 08:33:16,790 INFO L899 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2022-12-14 08:33:16,790 INFO L895 garLoopResultBuilder]: At program point L282(line 282) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) (= currentRoundingMode roundNearestTiesToEven)) [2022-12-14 08:33:16,790 INFO L899 garLoopResultBuilder]: For program point L282-1(line 282) no Hoare annotation was computed. [2022-12-14 08:33:16,790 INFO L899 garLoopResultBuilder]: For program point L299(lines 299 315) no Hoare annotation was computed. [2022-12-14 08:33:16,790 INFO L899 garLoopResultBuilder]: For program point L299-1(lines 299 315) no Hoare annotation was computed. [2022-12-14 08:33:16,790 INFO L899 garLoopResultBuilder]: For program point L60(line 60) no Hoare annotation was computed. [2022-12-14 08:33:16,790 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 61) no Hoare annotation was computed. [2022-12-14 08:33:16,790 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 58 63) no Hoare annotation was computed. [2022-12-14 08:33:16,790 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 58 63) the Hoare annotation is: true [2022-12-14 08:33:16,791 INFO L899 garLoopResultBuilder]: For program point L59-2(lines 58 63) no Hoare annotation was computed. [2022-12-14 08:33:16,791 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 60) no Hoare annotation was computed. [2022-12-14 08:33:16,795 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:33:16,797 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:33:16,807 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,807 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,808 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,811 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,811 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,811 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,813 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,813 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,814 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,814 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,815 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,815 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,816 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,816 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,816 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,816 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,817 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,817 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,817 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,817 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,818 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,818 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:33:16 BoogieIcfgContainer [2022-12-14 08:33:16,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:33:16,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:33:16,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:33:16,819 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:33:16,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:27:15" (3/4) ... [2022-12-14 08:33:16,823 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 08:33:16,830 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2022-12-14 08:33:16,830 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 08:33:16,835 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-14 08:33:16,835 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 08:33:16,836 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 08:33:16,836 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 08:33:16,857 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((e == \old(e) && __retres4 == 0bv32) && m == ~bvshl32(~bvshl32(\old(m), 1bv32), 1bv32)) || !(\old(m) == 0bv32)) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) [2022-12-14 08:33:16,858 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(\old(m) == 0bv32) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) && ((!(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || ~bvult32(m, 16777216bv32)) || !(\old(m) == 1bv32)) [2022-12-14 08:33:16,858 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!~bvsle32(e, 4294967168bv32) || !(\old(e) == 0bv32)) && (!~bvsle32(~bvadd128(4294967292bv32, e), 4294967168bv32) || !(\old(e) == 0bv32))) && !~bvult32(\old(m), 16777216bv32)) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) [2022-12-14 08:33:16,858 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) [2022-12-14 08:33:16,858 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((1bv32 == sb && tmp == 1bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || (((0bv32 == \result && __retres10 == 0bv32) && zero == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || (~bvadd128(1bv32, sb) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) [2022-12-14 08:33:16,873 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 08:33:16,874 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:33:16,874 INFO L158 Benchmark]: Toolchain (without parser) took 363936.54ms. Allocated memory was 83.9MB in the beginning and 302.0MB in the end (delta: 218.1MB). Free memory was 61.7MB in the beginning and 145.6MB in the end (delta: -83.9MB). Peak memory consumption was 137.2MB. Max. memory is 16.1GB. [2022-12-14 08:33:16,874 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory is still 33.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:33:16,874 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.24ms. Allocated memory is still 83.9MB. Free memory was 61.5MB in the beginning and 47.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 08:33:16,874 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.97ms. Allocated memory is still 83.9MB. Free memory was 47.0MB in the beginning and 45.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:33:16,875 INFO L158 Benchmark]: Boogie Preprocessor took 30.67ms. Allocated memory is still 83.9MB. Free memory was 45.1MB in the beginning and 43.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:33:16,875 INFO L158 Benchmark]: RCFGBuilder took 2586.79ms. Allocated memory is still 83.9MB. Free memory was 43.1MB in the beginning and 48.1MB in the end (delta: -5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 08:33:16,875 INFO L158 Benchmark]: TraceAbstraction took 360949.28ms. Allocated memory was 83.9MB in the beginning and 302.0MB in the end (delta: 218.1MB). Free memory was 47.4MB in the beginning and 149.7MB in the end (delta: -102.4MB). Peak memory consumption was 169.7MB. Max. memory is 16.1GB. [2022-12-14 08:33:16,875 INFO L158 Benchmark]: Witness Printer took 54.42ms. Allocated memory is still 302.0MB. Free memory was 149.7MB in the beginning and 145.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 08:33:16,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory is still 33.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.24ms. Allocated memory is still 83.9MB. Free memory was 61.5MB in the beginning and 47.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.97ms. Allocated memory is still 83.9MB. Free memory was 47.0MB in the beginning and 45.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.67ms. Allocated memory is still 83.9MB. Free memory was 45.1MB in the beginning and 43.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2586.79ms. Allocated memory is still 83.9MB. Free memory was 43.1MB in the beginning and 48.1MB in the end (delta: -5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 360949.28ms. Allocated memory was 83.9MB in the beginning and 302.0MB in the end (delta: 218.1MB). Free memory was 47.4MB in the beginning and 149.7MB in the end (delta: -102.4MB). Peak memory consumption was 169.7MB. Max. memory is 16.1GB. * Witness Printer took 54.42ms. Allocated memory is still 302.0MB. Free memory was 149.7MB in the beginning and 145.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 60]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 360.9s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 167.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 mSolverCounterUnknown, 568 SdHoareTripleChecker+Valid, 151.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 568 mSDsluCounter, 3463 SdHoareTripleChecker+Invalid, 150.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 70 IncrementalHoareTripleChecker+Unchecked, 2641 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1372 IncrementalHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 822 mSDtfsCounter, 1372 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2267 GetRequests, 2094 SyntacticMatches, 4 SemanticMatches, 169 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 50.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=11, InterpolantAutomatonStates: 132, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 105 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 137 PreInvPairs, 382 NumberOfFragments, 188 HoareAnnotationTreeSize, 137 FomulaSimplifications, 78586 FormulaSimplificationTreeSizeReduction, 2.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 2145 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 94.1s SatisfiabilityAnalysisTime, 88.4s InterpolantComputationTime, 1321 NumberOfCodeBlocks, 1321 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2196 ConstructedInterpolants, 2 QuantifiedInterpolants, 4279 SizeOfPredicates, 56 NumberOfNonLiveVariables, 2478 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 42 InterpolantComputations, 11 PerfectInterpolantSequences, 1225/1479 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 200]: Loop Invariant [2022-12-14 08:33:16,880 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,880 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,880 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,881 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,881 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,881 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((1bv32 == sb && tmp == 1bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || (~bvadd128(1bv32, sb) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || ((__retres10 == 0bv32 && zero == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 78]: Loop Invariant [2022-12-14 08:33:16,881 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,881 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: !(\old(m) == 0bv32) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) - InvariantResult [Line: 71]: Loop Invariant [2022-12-14 08:33:16,881 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,881 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((e == \old(e) && __retres4 == 0bv32) && m == ~bvshl32(~bvshl32(\old(m), 1bv32), 1bv32)) || !(\old(m) == 0bv32)) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) - InvariantResult [Line: 263]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 100]: Loop Invariant [2022-12-14 08:33:16,882 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,882 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((!~bvsle32(e, 4294967168bv32) || !(\old(e) == 0bv32)) && (!~bvsle32(~bvadd128(4294967292bv32, e), 4294967168bv32) || !(\old(e) == 0bv32))) && !~bvult32(\old(m), 16777216bv32)) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) - InvariantResult [Line: 190]: Loop Invariant [2022-12-14 08:33:16,882 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,882 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,882 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,882 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,882 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,882 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (((1bv32 == sb && tmp == 1bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || (((0bv32 == \result && __retres10 == 0bv32) && zero == 0bv32) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) || (~bvadd128(1bv32, sb) == 0bv32 && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) - InvariantResult [Line: 80]: Loop Invariant [2022-12-14 08:33:16,883 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,883 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,883 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 08:33:16,883 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (!(\old(m) == 0bv32) || !(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven)) && ((!(unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) || ~bvult32(m, 16777216bv32)) || !(\old(m) == 1bv32)) RESULT: Ultimate proved your program to be correct! [2022-12-14 08:33:17,085 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-12-14 08:33:17,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9029354a-a523-4766-839b-1eb61dcd9f4e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE