./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0621a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0621a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93ec260cb84d051ded8af47768b754d2a933d99ce3d516511a560eef2f740c5a --- 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-dbf71c6-m [2022-10-17 10:57:44,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:57:44,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:57:44,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:57:44,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:57:44,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:57:44,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:57:44,833 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:57:44,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:57:44,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:57:44,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:57:44,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:57:44,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:57:44,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:57:44,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:57:44,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:57:44,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:57:44,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:57:44,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:57:44,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:57:44,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:57:44,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:57:44,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:57:44,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:57:44,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:57:44,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:57:44,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:57:44,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:57:44,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:57:44,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:57:44,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:57:44,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:57:44,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:57:44,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:57:44,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:57:44,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:57:44,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:57:44,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:57:44,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:57:44,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:57:44,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:57:44,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:57:44,910 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:57:44,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:57:44,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:57:44,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:57:44,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:57:44,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:57:44,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:57:44,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:57:44,913 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:57:44,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:57:44,914 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:57:44,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:57:44,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:57:44,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:57:44,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:57:44,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:57:44,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:57:44,919 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:57:44,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:57:44,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:57:44,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:57:44,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:57:44,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:57:44,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:57:44,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:57:44,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:57:44,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:57:44,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:57:44,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:57:44,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:57:44,922 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:57:44,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:57:44,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:57:44,922 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_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93ec260cb84d051ded8af47768b754d2a933d99ce3d516511a560eef2f740c5a [2022-10-17 10:57:45,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:57:45,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:57:45,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:57:45,303 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:57:45,304 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:57:45,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0621a.c [2022-10-17 10:57:45,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/data/f998e3a1b/50d24843605b42929eb0a9528c88062c/FLAGe717f467f [2022-10-17 10:57:45,862 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:57:45,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c [2022-10-17 10:57:45,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/data/f998e3a1b/50d24843605b42929eb0a9528c88062c/FLAGe717f467f [2022-10-17 10:57:46,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/data/f998e3a1b/50d24843605b42929eb0a9528c88062c [2022-10-17 10:57:46,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:57:46,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:57:46,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:46,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:57:46,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:57:46,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a743d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46, skipping insertion in model container [2022-10-17 10:57:46,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:57:46,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:57:46,528 WARN L230 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_e6a6f48e-783a-4ade-a0d9-428c0264a793/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c[3196,3209] [2022-10-17 10:57:46,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:46,544 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:57:46,582 WARN L230 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_e6a6f48e-783a-4ade-a0d9-428c0264a793/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c[3196,3209] [2022-10-17 10:57:46,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:46,604 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:57:46,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46 WrapperNode [2022-10-17 10:57:46,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:46,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:46,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:57:46,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:57:46,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,671 INFO L138 Inliner]: procedures = 19, calls = 60, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 186 [2022-10-17 10:57:46,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:46,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:57:46,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:57:46,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:57:46,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:57:46,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:57:46,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:57:46,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:57:46,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (1/1) ... [2022-10-17 10:57:46,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:57:46,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:46,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:46,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:57:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:57:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:57:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:57:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 10:57:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:57:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 10:57:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:57:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:57:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:57:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-10-17 10:57:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:57:46,954 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:57:46,957 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:57:47,357 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:57:47,363 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:57:47,364 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-17 10:57:47,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:47 BoogieIcfgContainer [2022-10-17 10:57:47,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:57:47,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:57:47,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:57:47,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:57:47,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:57:46" (1/3) ... [2022-10-17 10:57:47,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa4a470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:57:47, skipping insertion in model container [2022-10-17 10:57:47,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:46" (2/3) ... [2022-10-17 10:57:47,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa4a470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:57:47, skipping insertion in model container [2022-10-17 10:57:47,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:47" (3/3) ... [2022-10-17 10:57:47,377 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621a.c [2022-10-17 10:57:47,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:57:47,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:57:47,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:57:47,466 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=PETRI_NET, 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;@5f5f230, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:57:47,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:57:47,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.696969696969697) internal successors, (56), 34 states have internal predecessors, (56), 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) [2022-10-17 10:57:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 10:57:47,479 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:47,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:57:47,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:47,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1830079148, now seen corresponding path program 1 times [2022-10-17 10:57:47,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:47,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790523999] [2022-10-17 10:57:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:47,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:47,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:47,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790523999] [2022-10-17 10:57:47,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790523999] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:47,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:57:47,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:57:47,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807884334] [2022-10-17 10:57:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:47,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:57:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:47,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:57:47,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:57:47,872 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.696969696969697) internal successors, (56), 34 states have internal predecessors, (56), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-10-17 10:57:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:47,895 INFO L93 Difference]: Finished difference Result 68 states and 110 transitions. [2022-10-17 10:57:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:57:47,898 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Word has length 9 [2022-10-17 10:57:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:47,914 INFO L225 Difference]: With dead ends: 68 [2022-10-17 10:57:47,915 INFO L226 Difference]: Without dead ends: 32 [2022-10-17 10:57:47,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:57:47,927 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:47,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:47,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-17 10:57:47,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-17 10:57:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 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) [2022-10-17 10:57:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2022-10-17 10:57:47,963 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 9 [2022-10-17 10:57:47,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:47,964 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2022-10-17 10:57:47,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-10-17 10:57:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2022-10-17 10:57:47,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:57:47,965 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:47,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:57:47,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:57:47,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:47,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:47,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1558271665, now seen corresponding path program 1 times [2022-10-17 10:57:47,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:47,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421901590] [2022-10-17 10:57:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:47,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:57:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:57:48,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:57:48,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421901590] [2022-10-17 10:57:48,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421901590] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:57:48,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:57:48,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:57:48,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332051804] [2022-10-17 10:57:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:57:48,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:57:48,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:57:48,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:57:48,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:57:48,126 INFO L87 Difference]: Start difference. First operand 32 states and 44 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:57:48,173 INFO L93 Difference]: Finished difference Result 65 states and 88 transitions. [2022-10-17 10:57:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:57:48,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 10:57:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:57:48,175 INFO L225 Difference]: With dead ends: 65 [2022-10-17 10:57:48,175 INFO L226 Difference]: Without dead ends: 45 [2022-10-17 10:57:48,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:57:48,177 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:57:48,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 67 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:57:48,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-17 10:57:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2022-10-17 10:57:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 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) [2022-10-17 10:57:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2022-10-17 10:57:48,192 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 10 [2022-10-17 10:57:48,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:57:48,195 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2022-10-17 10:57:48,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:57:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2022-10-17 10:57:48,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 10:57:48,198 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:57:48,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:57:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:57:48,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:57:48,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:57:48,202 INFO L85 PathProgramCache]: Analyzing trace with hash 893364878, now seen corresponding path program 1 times [2022-10-17 10:57:48,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:57:48,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662156739] [2022-10-17 10:57:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:57:48,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:57:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:48,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:57:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:57:48,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:57:48,342 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:57:48,343 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:57:48,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:57:48,349 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-17 10:57:48,353 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:57:48,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:57:48 BoogieIcfgContainer [2022-10-17 10:57:48,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:57:48,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:57:48,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:57:48,389 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:57:48,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:57:47" (3/4) ... [2022-10-17 10:57:48,393 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:57:48,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:57:48,394 INFO L158 Benchmark]: Toolchain (without parser) took 2154.90ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 51.9MB in the beginning and 69.1MB in the end (delta: -17.2MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2022-10-17 10:57:48,394 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 90.2MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:57:48,395 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.34ms. Allocated memory is still 90.2MB. Free memory was 51.8MB in the beginning and 63.9MB in the end (delta: -12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:57:48,396 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.06ms. Allocated memory is still 90.2MB. Free memory was 63.9MB in the beginning and 61.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:57:48,396 INFO L158 Benchmark]: Boogie Preprocessor took 84.89ms. Allocated memory is still 90.2MB. Free memory was 61.5MB in the beginning and 59.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:57:48,397 INFO L158 Benchmark]: RCFGBuilder took 608.33ms. Allocated memory is still 90.2MB. Free memory was 59.7MB in the beginning and 44.7MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 10:57:48,398 INFO L158 Benchmark]: TraceAbstraction took 1019.31ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 43.8MB in the beginning and 69.1MB in the end (delta: -25.3MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2022-10-17 10:57:48,398 INFO L158 Benchmark]: Witness Printer took 4.59ms. Allocated memory is still 125.8MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:57:48,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 90.2MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.34ms. Allocated memory is still 90.2MB. Free memory was 51.8MB in the beginning and 63.9MB in the end (delta: -12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.06ms. Allocated memory is still 90.2MB. Free memory was 63.9MB in the beginning and 61.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.89ms. Allocated memory is still 90.2MB. Free memory was 61.5MB in the beginning and 59.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 608.33ms. Allocated memory is still 90.2MB. Free memory was 59.7MB in the beginning and 44.7MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1019.31ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 43.8MB in the beginning and 69.1MB in the end (delta: -25.3MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Witness Printer took 4.59ms. Allocated memory is still 125.8MB. Free memory is still 69.1MB. 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: 133]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 132, overapproximation of someUnaryDOUBLEoperation at line 49, overapproximation of someBinaryArithmeticFLOAToperation at line 129. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L34-L39] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L41-L46] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L48-L52] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L54-L56] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L129] float x = 1.0f / 0.0f; [L130] CALL, EXPR atan_float(x) [L59] float w, s1, s2, z; [L60] __int32_t ix, hx, id; VAL [\old(x)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000001] [L63] ieee_float_shape_type gf_u; [L64] gf_u.value = (x) [L65] EXPR gf_u.word [L65] (hx) = gf_u.word [L67] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000001] [L68] COND FALSE !(ix >= 0x50800000) VAL [\old(x)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000001] [L76] COND TRUE ix < 0x3ee00000 VAL [\old(x)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000001] [L77] COND TRUE ix < 0x31000000 VAL [\old(x)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000001] [L78] COND TRUE huge_atan + x > one_atan [L79] return x; VAL [\old(x)=1000000000000000000000000000001, \result=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=1000000000000000000000000000001] [L130] RET, EXPR atan_float(x) [L130] float res = atan_float(x); [L132] COND TRUE res != pi_o_2 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, x=1000000000000000000000000000001] [L133] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, x=1000000000000000000000000000001] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 88 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2022-10-17 10:57:48,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0621a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93ec260cb84d051ded8af47768b754d2a933d99ce3d516511a560eef2f740c5a --- 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-dbf71c6-m [2022-10-17 10:57:51,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:57:51,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:57:51,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:57:51,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:57:51,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:57:51,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:57:51,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:57:51,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:57:51,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:57:51,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:57:51,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:57:51,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:57:51,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:57:51,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:57:51,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:57:51,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:57:51,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:57:51,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:57:51,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:57:51,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:57:51,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:57:51,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:57:51,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:57:51,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:57:51,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:57:51,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:57:51,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:57:51,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:57:51,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:57:51,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:57:51,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:57:51,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:57:51,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:57:51,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:57:51,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:57:51,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:57:51,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:57:51,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:57:51,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:57:51,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:57:51,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 10:57:51,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:57:51,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:57:51,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:57:51,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:57:51,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:57:51,347 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:57:51,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:57:51,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:57:51,349 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:57:51,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:57:51,351 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:57:51,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:57:51,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:57:51,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:57:51,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:57:51,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:57:51,352 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:57:51,353 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:57:51,353 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:57:51,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:57:51,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:57:51,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:57:51,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:57:51,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:57:51,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:57:51,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:57:51,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:57:51,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:57:51,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:57:51,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:57:51,356 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:57:51,356 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:57:51,357 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:57:51,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:57:51,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:57:51,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:57:51,358 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_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93ec260cb84d051ded8af47768b754d2a933d99ce3d516511a560eef2f740c5a [2022-10-17 10:57:51,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:57:51,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:57:51,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:57:51,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:57:51,814 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:57:51,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0621a.c [2022-10-17 10:57:51,888 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/data/7a35473ef/5cc591cd42324705a0b5a3b79491b8e3/FLAG8a0e23cc2 [2022-10-17 10:57:52,554 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:57:52,555 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c [2022-10-17 10:57:52,565 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/data/7a35473ef/5cc591cd42324705a0b5a3b79491b8e3/FLAG8a0e23cc2 [2022-10-17 10:57:52,877 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/data/7a35473ef/5cc591cd42324705a0b5a3b79491b8e3 [2022-10-17 10:57:52,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:57:52,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:57:52,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:52,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:57:52,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:57:52,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:52" (1/1) ... [2022-10-17 10:57:52,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7faa8202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:52, skipping insertion in model container [2022-10-17 10:57:52,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:52" (1/1) ... [2022-10-17 10:57:52,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:57:52,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:57:53,129 WARN L230 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_e6a6f48e-783a-4ade-a0d9-428c0264a793/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c[3196,3209] [2022-10-17 10:57:53,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:53,148 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:57:53,218 WARN L230 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_e6a6f48e-783a-4ade-a0d9-428c0264a793/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c[3196,3209] [2022-10-17 10:57:53,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:53,246 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:57:53,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53 WrapperNode [2022-10-17 10:57:53,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:53,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:53,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:57:53,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:57:53,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,338 INFO L138 Inliner]: procedures = 22, calls = 60, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 175 [2022-10-17 10:57:53,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:57:53,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:57:53,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:57:53,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:57:53,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,426 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:57:53,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:57:53,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:57:53,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:57:53,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (1/1) ... [2022-10-17 10:57:53,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:57:53,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:57:53,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:57:53,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:57:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:57:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-10-17 10:57:53,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:57:53,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:57:53,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-10-17 10:57:53,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:57:53,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:57:53,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:57:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-10-17 10:57:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:57:53,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:57:53,722 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:57:53,725 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:58:06,489 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:58:06,497 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:58:06,512 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-17 10:58:06,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:06 BoogieIcfgContainer [2022-10-17 10:58:06,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:58:06,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:58:06,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:58:06,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:58:06,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:57:52" (1/3) ... [2022-10-17 10:58:06,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18db1268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:06, skipping insertion in model container [2022-10-17 10:58:06,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:53" (2/3) ... [2022-10-17 10:58:06,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18db1268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:06, skipping insertion in model container [2022-10-17 10:58:06,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:06" (3/3) ... [2022-10-17 10:58:06,530 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621a.c [2022-10-17 10:58:06,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:58:06,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:58:06,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:58:06,634 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=PETRI_NET, 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;@187d7747, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:58:06,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:58:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 31 states have internal predecessors, (49), 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) [2022-10-17 10:58:06,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 10:58:06,646 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:06,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:06,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:06,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:06,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1906423550, now seen corresponding path program 1 times [2022-10-17 10:58:06,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:06,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32710531] [2022-10-17 10:58:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:06,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:06,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:06,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:06,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:58:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:07,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:58:07,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:07,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:07,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:07,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32710531] [2022-10-17 10:58:07,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32710531] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:07,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:07,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:58:07,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295510633] [2022-10-17 10:58:07,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:07,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:58:07,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:58:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:58:07,744 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 31 states have internal predecessors, (49), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-10-17 10:58:07,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:07,763 INFO L93 Difference]: Finished difference Result 62 states and 96 transitions. [2022-10-17 10:58:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:58:07,766 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Word has length 9 [2022-10-17 10:58:07,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:07,776 INFO L225 Difference]: With dead ends: 62 [2022-10-17 10:58:07,776 INFO L226 Difference]: Without dead ends: 29 [2022-10-17 10:58:07,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:58:07,784 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:07,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:58:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-17 10:58:07,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-10-17 10:58:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 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) [2022-10-17 10:58:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-10-17 10:58:07,823 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 9 [2022-10-17 10:58:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:07,823 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-10-17 10:58:07,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-10-17 10:58:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-10-17 10:58:07,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:58:07,825 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:07,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:07,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:08,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:08,039 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:08,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:08,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1481927263, now seen corresponding path program 1 times [2022-10-17 10:58:08,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:08,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215240262] [2022-10-17 10:58:08,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:08,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:08,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:08,043 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:08,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:58:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:09,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:58:09,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:09,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:09,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:09,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215240262] [2022-10-17 10:58:09,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215240262] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:09,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:09,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:58:09,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946645499] [2022-10-17 10:58:09,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:09,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:58:09,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:09,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:58:09,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:09,455 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:09,466 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2022-10-17 10:58:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:58:09,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 10:58:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:09,468 INFO L225 Difference]: With dead ends: 33 [2022-10-17 10:58:09,468 INFO L226 Difference]: Without dead ends: 29 [2022-10-17 10:58:09,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:09,471 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:09,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2022-10-17 10:58:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-17 10:58:09,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-10-17 10:58:09,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 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) [2022-10-17 10:58:09,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2022-10-17 10:58:09,480 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 10 [2022-10-17 10:58:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:09,480 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-10-17 10:58:09,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:09,481 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2022-10-17 10:58:09,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:58:09,482 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:09,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:09,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:09,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:09,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:09,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:09,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1305404355, now seen corresponding path program 1 times [2022-10-17 10:58:09,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:09,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895341290] [2022-10-17 10:58:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:09,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:09,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:09,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:09,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6a6f48e-783a-4ade-a0d9-428c0264a793/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:58:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:10,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:58:10,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:11,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:58:11,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:58:11,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 66 [2022-10-17 10:58:12,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 45 [2022-10-17 10:58:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:13,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:13,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:13,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895341290] [2022-10-17 10:58:13,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895341290] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:13,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:13,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:58:13,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980869603] [2022-10-17 10:58:13,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:13,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:58:13,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:13,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:58:13,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:58:13,729 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-10-17 10:58:18,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:58:20,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:58:22,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:58:24,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:58:25,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []