./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e734a6415ecaa3efaa9cfa8e6fa7e794c71eea5a8e2df3ec7e51a002eff99a9e --- 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-8393723 [2022-11-19 06:58:25,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:58:25,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:58:25,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:58:25,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:58:25,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:58:25,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:58:25,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:58:25,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:58:25,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:58:25,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:58:25,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:58:25,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:58:25,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:58:25,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:58:25,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:58:25,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:58:25,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:58:25,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:58:25,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:58:25,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:58:25,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:58:25,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:58:25,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:58:25,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:58:25,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:58:25,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:58:25,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:58:25,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:58:25,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:58:25,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:58:25,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:58:25,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:58:25,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:58:25,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:58:25,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:58:25,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:58:25,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:58:25,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:58:25,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:58:25,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:58:25,871 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:58:25,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:58:25,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:58:25,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:58:25,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:58:25,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:58:25,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:58:25,904 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:58:25,905 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:58:25,905 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:58:25,905 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:58:25,905 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:58:25,906 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:58:25,906 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:58:25,906 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:58:25,906 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:58:25,907 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:58:25,907 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:58:25,908 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:58:25,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:58:25,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:58:25,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:58:25,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:58:25,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:58:25,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:58:25,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:58:25,912 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:58:25,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:58:25,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:58:25,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:58:25,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:25,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:58:25,914 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:58:25,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:58:25,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:58:25,915 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:58:25,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:58:25,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:58:25,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:58:25,917 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_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e734a6415ecaa3efaa9cfa8e6fa7e794c71eea5a8e2df3ec7e51a002eff99a9e [2022-11-19 06:58:26,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:58:26,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:58:26,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:58:26,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:58:26,205 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:58:26,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2022-11-19 06:58:26,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/data/9c455408e/eddc5ee03f3c4637b80fb9cc0b92a3fd/FLAG2f30f7fc7 [2022-11-19 06:58:26,890 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:58:26,891 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2022-11-19 06:58:26,899 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/data/9c455408e/eddc5ee03f3c4637b80fb9cc0b92a3fd/FLAG2f30f7fc7 [2022-11-19 06:58:27,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/data/9c455408e/eddc5ee03f3c4637b80fb9cc0b92a3fd [2022-11-19 06:58:27,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:58:27,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:58:27,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:27,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:58:27,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:58:27,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df652d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27, skipping insertion in model container [2022-11-19 06:58:27,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:58:27,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:58:27,548 WARN L234 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_0560405a-69eb-45ab-bba5-3cdc65c2b364/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1107,1120] [2022-11-19 06:58:27,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:27,684 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:58:27,697 WARN L234 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_0560405a-69eb-45ab-bba5-3cdc65c2b364/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1107,1120] [2022-11-19 06:58:27,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:27,784 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:58:27,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27 WrapperNode [2022-11-19 06:58:27,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:27,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:27,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:58:27,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:58:27,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,860 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 225 [2022-11-19 06:58:27,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:27,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:58:27,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:58:27,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:58:27,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,927 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:58:27,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:58:27,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:58:27,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:58:27,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (1/1) ... [2022-11-19 06:58:27,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:27,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:27,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:58:27,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:58:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:58:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:58:28,140 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:58:28,142 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:58:28,624 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:58:28,984 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:58:28,984 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:58:28,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:28 BoogieIcfgContainer [2022-11-19 06:58:28,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:58:28,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:58:28,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:58:28,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:58:28,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:58:27" (1/3) ... [2022-11-19 06:58:28,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1578be94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:58:28, skipping insertion in model container [2022-11-19 06:58:28,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:27" (2/3) ... [2022-11-19 06:58:29,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1578be94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:58:28, skipping insertion in model container [2022-11-19 06:58:29,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:28" (3/3) ... [2022-11-19 06:58:29,001 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_segments.c [2022-11-19 06:58:29,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:58:29,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:58:29,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:58:29,105 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;@2b1ea5e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:58:29,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:58:29,112 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) [2022-11-19 06:58:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:58:29,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:29,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:58:29,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:29,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash 5560569, now seen corresponding path program 1 times [2022-11-19 06:58:29,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:58:29,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169883799] [2022-11-19 06:58:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:29,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:58:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:58:29,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:58:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:58:29,785 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:58:29,787 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:58:29,788 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:58:29,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:58:29,795 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 06:58:29,799 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:58:29,832 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 06:58:29,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:58:29 BoogieIcfgContainer [2022-11-19 06:58:29,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:58:29,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:58:29,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:58:29,848 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:58:29,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:28" (3/4) ... [2022-11-19 06:58:29,852 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:58:29,853 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:58:29,855 INFO L158 Benchmark]: Toolchain (without parser) took 2550.86ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 89.3MB in the beginning and 84.9MB in the end (delta: 4.5MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2022-11-19 06:58:29,856 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:58:29,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.18ms. Allocated memory is still 121.6MB. Free memory was 88.9MB in the beginning and 93.8MB in the end (delta: -4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:58:29,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.07ms. Allocated memory is still 121.6MB. Free memory was 93.4MB in the beginning and 90.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:58:29,858 INFO L158 Benchmark]: Boogie Preprocessor took 78.50ms. Allocated memory is still 121.6MB. Free memory was 90.9MB in the beginning and 89.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:58:29,859 INFO L158 Benchmark]: RCFGBuilder took 1041.43ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 65.3MB in the end (delta: 23.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-19 06:58:29,859 INFO L158 Benchmark]: TraceAbstraction took 852.03ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 64.7MB in the beginning and 85.1MB in the end (delta: -20.4MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2022-11-19 06:58:29,860 INFO L158 Benchmark]: Witness Printer took 6.12ms. Allocated memory is still 153.1MB. Free memory was 85.1MB in the beginning and 84.9MB in the end (delta: 263.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:58:29,863 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory is still 40.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 480.18ms. Allocated memory is still 121.6MB. Free memory was 88.9MB in the beginning and 93.8MB in the end (delta: -4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.07ms. Allocated memory is still 121.6MB. Free memory was 93.4MB in the beginning and 90.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.50ms. Allocated memory is still 121.6MB. Free memory was 90.9MB in the beginning and 89.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1041.43ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 65.3MB in the end (delta: 23.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 852.03ms. Allocated memory was 121.6MB in the beginning and 153.1MB in the end (delta: 31.5MB). Free memory was 64.7MB in the beginning and 85.1MB in the end (delta: -20.4MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * Witness Printer took 6.12ms. Allocated memory is still 153.1MB. Free memory was 85.1MB in the beginning and 84.9MB in the end (delta: 263.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 80, overapproximation of bitwiseComplement at line 109, overapproximation of bitwiseAnd at line 63. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 8); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (8 - 1); [L31] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 32); [L32] const SORT_8 msb_SORT_8 = (SORT_8)1 << (32 - 1); [L34] const SORT_52 mask_SORT_52 = (SORT_52)-1 >> (sizeof(SORT_52) * 8 - 2); [L35] const SORT_52 msb_SORT_52 = (SORT_52)1 << (2 - 1); [L37] const SORT_54 mask_SORT_54 = (SORT_54)-1 >> (sizeof(SORT_54) * 8 - 3); [L38] const SORT_54 msb_SORT_54 = (SORT_54)1 << (3 - 1); [L40] const SORT_4 var_5 = 0; [L41] const SORT_8 var_10 = 0; [L42] const SORT_8 var_13 = 1; [L43] const SORT_8 var_17 = 2; [L44] const SORT_8 var_21 = 3; [L45] const SORT_8 var_25 = 4; [L46] const SORT_1 var_30 = 1; [L47] const SORT_4 var_41 = 1; [L48] const SORT_4 var_44 = 4; [L49] const SORT_4 var_45 = 3; [L50] const SORT_4 var_50 = 2; [L52] SORT_1 input_2; [L53] SORT_1 input_3; [L55] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L57] SORT_4 init_7_arg_1 = var_5; [L58] state_6 = init_7_arg_1 VAL [init_7_arg_1=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_5=0, var_50=2] [L61] input_2 = __VERIFIER_nondet_uchar() [L62] input_3 = __VERIFIER_nondet_uchar() [L63] input_3 = input_3 & mask_SORT_1 [L66] SORT_4 var_9_arg_0 = state_6; [L67] var_9_arg_0 = var_9_arg_0 & mask_SORT_4 [L68] SORT_8 var_9 = var_9_arg_0; [L69] SORT_8 var_11_arg_0 = var_9; [L70] SORT_8 var_11_arg_1 = var_10; [L71] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L72] SORT_4 var_12_arg_0 = state_6; [L73] var_12_arg_0 = var_12_arg_0 & mask_SORT_4 [L74] SORT_8 var_12 = var_12_arg_0; [L75] SORT_8 var_14_arg_0 = var_12; [L76] SORT_8 var_14_arg_1 = var_13; [L77] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L78] SORT_1 var_15_arg_0 = var_11; [L79] SORT_1 var_15_arg_1 = var_14; [L80] SORT_1 var_15 = var_15_arg_0 | var_15_arg_1; [L81] SORT_4 var_16_arg_0 = state_6; [L82] var_16_arg_0 = var_16_arg_0 & mask_SORT_4 [L83] SORT_8 var_16 = var_16_arg_0; [L84] SORT_8 var_18_arg_0 = var_16; [L85] SORT_8 var_18_arg_1 = var_17; [L86] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L87] SORT_1 var_19_arg_0 = var_15; [L88] SORT_1 var_19_arg_1 = var_18; [L89] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L90] SORT_4 var_20_arg_0 = state_6; [L91] var_20_arg_0 = var_20_arg_0 & mask_SORT_4 [L92] SORT_8 var_20 = var_20_arg_0; [L93] SORT_8 var_22_arg_0 = var_20; [L94] SORT_8 var_22_arg_1 = var_21; [L95] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L96] SORT_1 var_23_arg_0 = var_19; [L97] SORT_1 var_23_arg_1 = var_22; [L98] SORT_1 var_23 = var_23_arg_0 | var_23_arg_1; [L99] SORT_4 var_24_arg_0 = state_6; [L100] var_24_arg_0 = var_24_arg_0 & mask_SORT_4 [L101] SORT_8 var_24 = var_24_arg_0; [L102] SORT_8 var_26_arg_0 = var_24; [L103] SORT_8 var_26_arg_1 = var_25; [L104] SORT_1 var_26 = var_26_arg_0 == var_26_arg_1; [L105] SORT_1 var_27_arg_0 = var_23; [L106] SORT_1 var_27_arg_1 = var_26; [L107] SORT_1 var_27 = var_27_arg_0 | var_27_arg_1; [L108] SORT_1 var_31_arg_0 = var_27; [L109] SORT_1 var_31 = ~var_31_arg_0; [L110] SORT_1 var_32_arg_0 = var_30; [L111] SORT_1 var_32_arg_1 = var_31; [L112] SORT_1 var_32 = var_32_arg_0 & var_32_arg_1; [L113] var_32 = var_32 & mask_SORT_1 [L114] SORT_1 bad_33_arg_0 = var_32; [L115] CALL __VERIFIER_assert(!(bad_33_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 06:58:29,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/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_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e734a6415ecaa3efaa9cfa8e6fa7e794c71eea5a8e2df3ec7e51a002eff99a9e --- 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-8393723 [2022-11-19 06:58:32,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:58:32,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:58:32,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:58:32,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:58:32,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:58:32,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:58:32,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:58:32,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:58:32,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:58:32,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:58:32,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:58:32,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:58:32,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:58:32,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:58:32,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:58:32,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:58:32,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:58:32,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:58:32,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:58:32,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:58:32,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:58:32,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:58:32,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:58:32,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:58:32,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:58:32,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:58:32,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:58:32,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:58:32,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:58:32,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:58:32,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:58:32,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:58:32,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:58:32,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:58:32,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:58:32,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:58:32,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:58:32,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:58:32,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:58:32,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:58:32,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 06:58:32,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:58:32,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:58:32,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:58:32,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:58:32,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:58:32,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:58:32,283 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:58:32,283 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:58:32,283 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:58:32,283 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:58:32,284 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:58:32,285 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:58:32,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:58:32,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:58:32,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:58:32,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:58:32,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:58:32,287 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:58:32,287 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:58:32,287 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:58:32,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:58:32,287 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:58:32,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:58:32,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:58:32,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:58:32,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:58:32,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:32,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:58:32,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:58:32,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:58:32,289 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:58:32,289 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:58:32,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:58:32,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:58:32,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:58:32,290 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_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e734a6415ecaa3efaa9cfa8e6fa7e794c71eea5a8e2df3ec7e51a002eff99a9e [2022-11-19 06:58:32,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:58:32,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:58:32,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:58:32,677 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:58:32,678 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:58:32,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2022-11-19 06:58:32,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/data/cb0d327a0/518a239604064742b4710ff9ee127950/FLAG17f085e4a [2022-11-19 06:58:33,341 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:58:33,342 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2022-11-19 06:58:33,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/data/cb0d327a0/518a239604064742b4710ff9ee127950/FLAG17f085e4a [2022-11-19 06:58:33,766 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/data/cb0d327a0/518a239604064742b4710ff9ee127950 [2022-11-19 06:58:33,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:58:33,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:58:33,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:33,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:58:33,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:58:33,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:33" (1/1) ... [2022-11-19 06:58:33,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb3d682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:33, skipping insertion in model container [2022-11-19 06:58:33,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:33" (1/1) ... [2022-11-19 06:58:33,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:58:33,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:58:34,000 WARN L234 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_0560405a-69eb-45ab-bba5-3cdc65c2b364/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1107,1120] [2022-11-19 06:58:34,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:34,119 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:58:34,129 WARN L234 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_0560405a-69eb-45ab-bba5-3cdc65c2b364/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1107,1120] [2022-11-19 06:58:34,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:34,172 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:58:34,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34 WrapperNode [2022-11-19 06:58:34,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:34,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:34,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:58:34,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:58:34,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,212 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 155 [2022-11-19 06:58:34,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:34,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:58:34,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:58:34,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:58:34,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,244 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:58:34,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:58:34,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:58:34,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:58:34,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (1/1) ... [2022-11-19 06:58:34,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:34,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:34,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:58:34,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:58:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:58:34,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:58:34,435 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:58:34,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:58:34,726 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:58:34,732 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:58:34,732 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:58:34,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:34 BoogieIcfgContainer [2022-11-19 06:58:34,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:58:34,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:58:34,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:58:34,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:58:34,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:58:33" (1/3) ... [2022-11-19 06:58:34,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb5eb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:58:34, skipping insertion in model container [2022-11-19 06:58:34,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:34" (2/3) ... [2022-11-19 06:58:34,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb5eb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:58:34, skipping insertion in model container [2022-11-19 06:58:34,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:34" (3/3) ... [2022-11-19 06:58:34,762 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_segments.c [2022-11-19 06:58:34,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:58:34,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:58:34,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:58:34,865 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;@35c1b095, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:58:34,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:58:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:58:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:58:34,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:34,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:58:34,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:34,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 06:58:34,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:34,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126601546] [2022-11-19 06:58:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:34,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:58:34,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:34,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:58:34,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 06:58:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:35,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-19 06:58:35,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:58:35,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:58:35,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:35,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126601546] [2022-11-19 06:58:35,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126601546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:35,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:35,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:58:35,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146098676] [2022-11-19 06:58:35,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:35,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:58:35,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:58:35,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:58:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:58:35,441 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:58:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:35,519 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 06:58:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:58:35,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:58:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:35,530 INFO L225 Difference]: With dead ends: 20 [2022-11-19 06:58:35,530 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 06:58:35,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:58:35,536 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:35,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:58:35,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 06:58:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 06:58:35,566 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) [2022-11-19 06:58:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 06:58:35,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 06:58:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:35,568 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 06:58:35,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:58:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 06:58:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:58:35,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:35,570 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:58:35,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:35,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:58:35,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:35,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:35,791 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 06:58:35,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:58:35,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895497862] [2022-11-19 06:58:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:35,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:58:35,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:58:35,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:58:35,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 06:58:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:36,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-19 06:58:36,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:58:36,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:58:48,375 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:58:48,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895497862] [2022-11-19 06:58:48,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895497862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:58:48,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [934391921] [2022-11-19 06:58:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:48,376 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:58:48,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:58:48,383 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:58:48,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 06:58:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:48,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-19 06:58:48,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:58:49,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:58:55,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [934391921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:58:55,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848571208] [2022-11-19 06:58:55,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:55,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:58:55,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:55,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:58:55,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:58:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:55,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-19 06:58:55,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:58:56,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:00,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848571208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:59:00,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:59:00,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 12 [2022-11-19 06:59:00,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484824185] [2022-11-19 06:59:00,929 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:59:00,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:59:00,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:59:00,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:59:00,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:59:00,932 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2022-11-19 06:59:01,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:01,200 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 06:59:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 06:59:01,201 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 06:59:01,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:01,202 INFO L225 Difference]: With dead ends: 16 [2022-11-19 06:59:01,202 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 06:59:01,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:59:01,204 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:01,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 27 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-11-19 06:59:01,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 06:59:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 06:59:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-11-19 06:59:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 06:59:01,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 06:59:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:01,211 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 06:59:01,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2022-11-19 06:59:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 06:59:01,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:59:01,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:01,212 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 06:59:01,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-19 06:59:01,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:01,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:59:01,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:59:01,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:59:01,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 06:59:01,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:59:01,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507315946] [2022-11-19 06:59:01,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 06:59:01,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:59:01,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:59:01,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:59:01,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 06:59:01,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 06:59:01,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:59:01,962 WARN L261 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 149 conjunts are in the unsatisfiable core [2022-11-19 06:59:01,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:59:03,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:59:03,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:59:21,086 WARN L233 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 489 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:03:44,630 WARN L233 SmtUtils]: Spent 3.12m on a formula simplification. DAG size of input: 2029 DAG size of output: 695 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:02,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:04:02,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507315946] [2022-11-19 07:04:02,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507315946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:04:02,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [75058604] [2022-11-19 07:04:02,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:04:02,049 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:04:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:04:02,055 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:04:02,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-19 07:04:02,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:04:02,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:04:02,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-19 07:04:02,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:03,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:04:20,564 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 444 DAG size of output: 225 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:12,933 WARN L233 SmtUtils]: Spent 25.20s on a formula simplification. DAG size of input: 1015 DAG size of output: 302 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:05:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:15,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [75058604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:05:15,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179028055] [2022-11-19 07:05:15,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:05:15,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:15,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:15,535 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:15,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:05:15,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:05:15,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:05:15,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-19 07:05:15,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:17,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:07:58,223 WARN L233 SmtUtils]: Spent 1.66m on a formula simplification. DAG size of input: 975 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:08:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:08:08,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179028055] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:08:08,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:08:08,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 6, 6, 6] total 20 [2022-11-19 07:08:08,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455678914] [2022-11-19 07:08:08,903 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:08:08,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:08:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:08:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:08:08,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:08:08,906 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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) [2022-11-19 07:08:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:09,961 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-19 07:08:09,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:08:09,964 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 11 [2022-11-19 07:08:09,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:09,965 INFO L225 Difference]: With dead ends: 17 [2022-11-19 07:08:09,965 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 07:08:09,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 341.4s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2022-11-19 07:08:09,971 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:09,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2022-11-19 07:08:09,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 07:08:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 07:08:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:08:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-19 07:08:09,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-19 07:08:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:09,979 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-19 07:08:09,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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) [2022-11-19 07:08:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-19 07:08:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:08:09,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:09,980 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-19 07:08:09,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-19 07:08:10,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:08:10,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-19 07:08:10,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:10,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-19 07:08:10,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:08:10,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010486036] [2022-11-19 07:08:10,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:08:10,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:08:10,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:08:10,589 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:08:10,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0560405a-69eb-45ab-bba5-3cdc65c2b364/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:08:10,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 07:08:10,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:08:10,809 WARN L261 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 164 conjunts are in the unsatisfiable core [2022-11-19 07:08:10,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 07:08:16,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:36,022 WARN L233 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 411 DAG size of output: 399 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)