./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/interleave_bits.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/interleave_bits.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur --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 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb --- 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-38b53e6 [2022-11-26 00:01:33,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:01:33,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:01:33,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:01:33,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:01:33,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:01:33,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:01:33,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:01:33,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:01:33,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:01:33,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:01:33,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:01:33,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:01:33,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:01:33,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:01:33,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:01:33,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:01:33,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:01:33,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:01:33,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:01:33,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:01:33,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:01:33,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:01:33,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:01:33,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:01:33,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:01:33,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:01:33,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:01:33,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:01:33,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:01:33,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:01:33,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:01:33,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:01:33,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:01:33,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:01:33,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:01:33,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:01:33,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:01:33,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:01:33,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:01:33,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:01:33,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:01:33,957 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:01:33,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:01:33,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:01:33,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:01:33,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:01:33,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:01:33,960 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:01:33,960 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:01:33,960 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:01:33,960 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:01:33,961 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:01:33,961 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:01:33,962 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:01:33,962 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:01:33,962 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:01:33,962 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:01:33,962 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:01:33,963 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:01:33,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:01:33,963 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:01:33,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:01:33,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:01:33,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:01:33,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:01:33,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:01:33,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:01:33,965 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:01:33,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:01:33,966 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:01:33,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:01:33,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:01:33,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:01:33,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:01:33,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:01:33,967 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:01:33,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:01:33,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:01:33,968 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:01:33,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:01:33,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:01:33,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:01:33,969 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_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41cbcdfa6f09b615c08bb2dbf908be5e0a68dc8c6a10c0ba76a3c4e4c07e69fb [2022-11-26 00:01:34,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:01:34,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:01:34,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:01:34,329 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:01:34,329 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:01:34,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/bitvector/interleave_bits.i [2022-11-26 00:01:37,454 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:01:37,745 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:01:37,746 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/sv-benchmarks/c/bitvector/interleave_bits.i [2022-11-26 00:01:37,754 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/data/cc13bd97c/1f8e35a9b1c541bd9d7a7d3d6a53435b/FLAGccefc4e60 [2022-11-26 00:01:37,771 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/data/cc13bd97c/1f8e35a9b1c541bd9d7a7d3d6a53435b [2022-11-26 00:01:37,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:01:37,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:01:37,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:01:37,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:01:37,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:01:37,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:37" (1/1) ... [2022-11-26 00:01:37,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123b9102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:37, skipping insertion in model container [2022-11-26 00:01:37,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:37" (1/1) ... [2022-11-26 00:01:37,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:01:37,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:01:37,944 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_8029730a-1eb7-48b2-8024-e1d44a2409c2/sv-benchmarks/c/bitvector/interleave_bits.i[1175,1188] [2022-11-26 00:01:37,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:01:37,980 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:01:37,995 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_8029730a-1eb7-48b2-8024-e1d44a2409c2/sv-benchmarks/c/bitvector/interleave_bits.i[1175,1188] [2022-11-26 00:01:38,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:01:38,023 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:01:38,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38 WrapperNode [2022-11-26 00:01:38,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:01:38,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:01:38,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:01:38,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:01:38,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,085 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2022-11-26 00:01:38,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:01:38,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:01:38,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:01:38,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:01:38,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,130 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:01:38,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:01:38,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:01:38,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:01:38,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (1/1) ... [2022-11-26 00:01:38,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:01:38,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:01:38,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:01:38,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:01:38,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:01:38,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:01:38,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:01:38,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:01:38,342 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:01:38,345 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:01:38,758 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:01:39,638 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:01:39,639 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:01:39,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:39 BoogieIcfgContainer [2022-11-26 00:01:39,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:01:39,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:01:39,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:01:39,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:01:39,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:37" (1/3) ... [2022-11-26 00:01:39,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215d4a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:39, skipping insertion in model container [2022-11-26 00:01:39,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:38" (2/3) ... [2022-11-26 00:01:39,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215d4a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:39, skipping insertion in model container [2022-11-26 00:01:39,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:39" (3/3) ... [2022-11-26 00:01:39,655 INFO L112 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2022-11-26 00:01:39,676 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:01:39,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:01:39,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:01:39,751 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;@5fe0d49b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:01:39,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:01:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:01:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:01:39,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:39,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:01:39,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:39,778 INFO L85 PathProgramCache]: Analyzing trace with hash 5218420, now seen corresponding path program 1 times [2022-11-26 00:01:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:39,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345819583] [2022-11-26 00:01:39,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:39,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:01:40,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:40,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345819583] [2022-11-26 00:01:40,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345819583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:40,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:40,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:01:40,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852194488] [2022-11-26 00:01:40,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:01:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:40,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:01:40,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:01:40,420 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:01:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:40,485 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-26 00:01:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:01:40,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-26 00:01:40,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:40,501 INFO L225 Difference]: With dead ends: 13 [2022-11-26 00:01:40,501 INFO L226 Difference]: Without dead ends: 6 [2022-11-26 00:01:40,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:01:40,510 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 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 [2022-11-26 00:01:40,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:01:40,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-26 00:01:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-26 00:01:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:01:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-26 00:01:40,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-26 00:01:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:40,544 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-26 00:01:40,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:01:40,545 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-26 00:01:40,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:01:40,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:40,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:01:40,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:01:40,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:40,548 INFO L85 PathProgramCache]: Analyzing trace with hash 156586491, now seen corresponding path program 1 times [2022-11-26 00:01:40,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:40,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038635173] [2022-11-26 00:01:40,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:40,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:01:40,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:40,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038635173] [2022-11-26 00:01:40,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038635173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:01:40,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402258194] [2022-11-26 00:01:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:40,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:01:40,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:01:40,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:01:40,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:01:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:41,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:01:41,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:01:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:01:41,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:01:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:01:41,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402258194] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:01:41,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [974059142] [2022-11-26 00:01:41,210 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-26 00:01:41,210 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:01:41,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:01:41,220 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:01:41,222 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:05:44,601 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:07:18,584 WARN L233 SmtUtils]: Spent 1.42m on a formula simplification. DAG size of input: 4017 DAG size of output: 129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:09:52,353 WARN L233 SmtUtils]: Spent 2.33m on a formula simplification. DAG size of input: 4016 DAG size of output: 160 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:09:52,395 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '69#(and (not (< (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 16)) (or (exists ((v_~bitwiseOr_1864 Int)) (not (= (ite (or (= (* (mod |ULTIMATE.start_main_~x~0#1| 65536) 255) 0) (= (mod |ULTIMATE.start_main_~x~0#1| 65536) 0)) (* (mod |ULTIMATE.start_main_~x~0#1| 65536) 256) (ite (= (* (mod |ULTIMATE.start_main_~x~0#1| 65536) 256) 0) (mod |ULTIMATE.start_main_~x~0#1| 65536) v_~bitwiseOr_1864)) 0))) (= |ULTIMATE.start_main_~xx~0#1| 0)) (= (ite (= (mod |ULTIMATE.start_main_~zz~0#1| 4294967296) (mod |ULTIMATE.start_main_~z~0#1| 4294967296)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (or (and (or (and (or (< (* 2 |ULTIMATE.start_main_~yy~0#1|) 0) (and (<= |ULTIMATE.start_main_~xx~0#1| |ULTIMATE.start_main_~zz~0#1|) (<= (* 2 |ULTIMATE.start_main_~yy~0#1|) |ULTIMATE.start_main_~zz~0#1|)) (< |ULTIMATE.start_main_~xx~0#1| 0)) (or (< |ULTIMATE.start_main_~zz~0#1| 0) (and (<= 0 |ULTIMATE.start_main_~xx~0#1|) (<= 0 (* 2 |ULTIMATE.start_main_~yy~0#1|)))) (or (< (* 2 |ULTIMATE.start_main_~yy~0#1|) 0) (<= |ULTIMATE.start_main_~zz~0#1| (+ |ULTIMATE.start_main_~xx~0#1| (* 2 |ULTIMATE.start_main_~yy~0#1|))) (< |ULTIMATE.start_main_~xx~0#1| 0)) (not (= (* 2 |ULTIMATE.start_main_~yy~0#1|) 0))) (and (= (* 2 |ULTIMATE.start_main_~yy~0#1|) 0) (= |ULTIMATE.start_main_~xx~0#1| |ULTIMATE.start_main_~zz~0#1|))) (not (= |ULTIMATE.start_main_~xx~0#1| (* 2 |ULTIMATE.start_main_~yy~0#1|))) (not (= |ULTIMATE.start_main_~xx~0#1| 0))) (and (= |ULTIMATE.start_main_~zz~0#1| (* 2 |ULTIMATE.start_main_~yy~0#1|)) (or (= |ULTIMATE.start_main_~xx~0#1| (* 2 |ULTIMATE.start_main_~yy~0#1|)) (= |ULTIMATE.start_main_~xx~0#1| 0)))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (or (exists ((v_~bitwiseOr_1844 Int) (v_~bitwiseOr_1877 Int) (|v_ULTIMATE.start_main_~yy~0#1_137| Int) (v_~bitwiseOr_1863 Int) (v_~bitwiseOr_1892 Int) (v_~bitwiseOr_1836 Int) (v_~bitwiseOr_1847 Int)) (and (<= 0 (ite (or (= (* |v_ULTIMATE.start_main_~yy~0#1_137| 15) 0) (= |v_ULTIMATE.start_main_~yy~0#1_137| 0)) (* |v_ULTIMATE.start_main_~yy~0#1_137| 16) (ite (= (* |v_ULTIMATE.start_main_~yy~0#1_137| 16) 0) |v_ULTIMATE.start_main_~yy~0#1_137| v_~bitwiseOr_1892))) (<= |v_ULTIMATE.start_main_~yy~0#1_137| 16711935) (<= 0 |v_ULTIMATE.start_main_~yy~0#1_137|) (< (ite (or (= (* |v_ULTIMATE.start_main_~yy~0#1_137| 15) 0) (= |v_ULTIMATE.start_main_~yy~0#1_137| 0)) (* |v_ULTIMATE.start_main_~yy~0#1_137| 16) (ite (= (* |v_ULTIMATE.start_main_~yy~0#1_137| 16) 0) |v_ULTIMATE.start_main_~yy~0#1_137| v_~bitwiseOr_1847)) 0) (<= |v_ULTIMATE.start_main_~yy~0#1_137| (ite (or (= (* 255 (mod |ULTIMATE.start_main_~y~0#1| 65536)) 0) (= (mod |ULTIMATE.start_main_~y~0#1| 65536) 0)) (* 256 (mod |ULTIMATE.start_main_~y~0#1| 65536)) (ite (= (* 256 (mod |ULTIMATE.start_main_~y~0#1| 65536)) 0) (mod |ULTIMATE.start_main_~y~0#1| 65536) v_~bitwiseOr_1863))) (not (= 252645135 (ite (or (= (* |v_ULTIMATE.start_main_~yy~0#1_137| 15) 0) (= |v_ULTIMATE.start_main_~yy~0#1_137| 0)) (* |v_ULTIMATE.start_main_~yy~0#1_137| 16) (ite (= (* |v_ULTIMATE.start_main_~yy~0#1_137| 16) 0) |v_ULTIMATE.start_main_~yy~0#1_137| v_~bitwiseOr_1844)))) (not (= 0 (ite (or (= (* |v_ULTIMATE.start_main_~yy~0#1_137| 15) 0) (= |v_ULTIMATE.start_main_~yy~0#1_137| 0)) (* |v_ULTIMATE.start_main_~yy~0#1_137| 16) (ite (= (* |v_ULTIMATE.start_main_~yy~0#1_137| 16) 0) |v_ULTIMATE.start_main_~yy~0#1_137| v_~bitwiseOr_1836)))) (< (+ 16711935 (ite (or (= (* 255 (mod |ULTIMATE.start_main_~y~0#1| 65536)) 0) (= (mod |ULTIMATE.start_main_~y~0#1| 65536) 0)) (* 256 (mod |ULTIMATE.start_main_~y~0#1| 65536)) (ite (= (* 256 (mod |ULTIMATE.start_main_~y~0#1| 65536)) 0) (mod |ULTIMATE.start_main_~y~0#1| 65536) v_~bitwiseOr_1877))) |v_ULTIMATE.start_main_~yy~0#1_137|))) (= |ULTIMATE.start_main_~yy~0#1| 0)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:09:52,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:09:52,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:09:52,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-26 00:09:52,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519113790] [2022-11-26 00:09:52,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:09:52,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:09:52,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:09:52,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:09:52,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=62, Unknown=1, NotChecked=0, Total=90 [2022-11-26 00:09:52,400 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:09:52,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:09:52,514 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-11-26 00:09:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:09:52,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:09:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:09:52,516 INFO L225 Difference]: With dead ends: 12 [2022-11-26 00:09:52,516 INFO L226 Difference]: Without dead ends: 9 [2022-11-26 00:09:52,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 247.7s TimeCoverageRelationStatistics Valid=34, Invalid=75, Unknown=1, NotChecked=0, Total=110 [2022-11-26 00:09:52,518 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:09:52,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:09:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-26 00:09:52,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-26 00:09:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:09:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-26 00:09:52,522 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-26 00:09:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:09:52,523 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-26 00:09:52,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:09:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-26 00:09:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:09:52,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:09:52,524 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-26 00:09:52,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:09:52,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:09:52,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:09:52,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:09:52,726 INFO L85 PathProgramCache]: Analyzing trace with hash -319600076, now seen corresponding path program 2 times [2022-11-26 00:09:52,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:09:52,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007540474] [2022-11-26 00:09:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:09:52,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:09:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:09:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:09:53,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:09:53,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007540474] [2022-11-26 00:09:53,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007540474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:09:53,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556379044] [2022-11-26 00:09:53,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:09:53,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:09:53,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:09:53,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:09:53,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8029730a-1eb7-48b2-8024-e1d44a2409c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:09:53,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-26 00:09:53,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:09:53,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:09:53,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:09:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:09:53,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:09:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:09:53,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556379044] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:09:53,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [259794019] [2022-11-26 00:09:53,818 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-26 00:09:53,818 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:09:53,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:09:53,819 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:09:53,819 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:13:49,273 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:15:20,117 WARN L233 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 4025 DAG size of output: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)