./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --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 c2c3bc2dc26c2558761493393203484f1e6d565a95170aac1e726e11bfe9e50e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:35:37,632 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:35:37,722 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:35:37,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:35:37,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:35:37,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:35:37,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:35:37,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:35:37,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:35:37,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:35:37,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:35:37,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:35:37,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:35:37,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:35:37,781 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:35:37,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:35:37,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:35:37,782 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:35:37,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:35:37,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:35:37,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:35:37,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:35:37,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:35:37,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:35:37,789 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:35:37,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:35:37,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:35:37,790 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:35:37,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:35:37,791 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:35:37,791 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:35:37,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:35:37,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:37,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:35:37,794 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:35:37,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:35:37,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:35:37,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:35:37,795 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:35:37,795 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:35:37,795 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:35:37,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:35:37,796 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2c3bc2dc26c2558761493393203484f1e6d565a95170aac1e726e11bfe9e50e [2024-11-08 16:35:38,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:35:38,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:35:38,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:35:38,145 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:35:38,146 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:35:38,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i Unable to find full path for "g++" [2024-11-08 16:35:40,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:35:40,503 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:35:40,504 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i [2024-11-08 16:35:40,519 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/data/c7ba13acc/9b1824f9cc3d4549b3c5455fa8cbc415/FLAGaec45e3dc [2024-11-08 16:35:40,772 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/data/c7ba13acc/9b1824f9cc3d4549b3c5455fa8cbc415 [2024-11-08 16:35:40,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:35:40,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:35:40,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:40,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:35:40,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:35:40,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:40,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4014f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40, skipping insertion in model container [2024-11-08 16:35:40,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:40,835 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:35:41,012 WARN L250 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_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i[915,928] [2024-11-08 16:35:41,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:41,083 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:35:41,099 WARN L250 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_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i[915,928] [2024-11-08 16:35:41,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:41,153 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:35:41,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41 WrapperNode [2024-11-08 16:35:41,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:41,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:41,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:35:41,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:35:41,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,219 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 113 [2024-11-08 16:35:41,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:41,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:35:41,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:35:41,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:35:41,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,269 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 16:35:41,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:35:41,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:35:41,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:35:41,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:35:41,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (1/1) ... [2024-11-08 16:35:41,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:41,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:41,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:35:41,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:35:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:35:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 16:35:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 16:35:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:35:41,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:35:41,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:35:41,470 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:35:41,474 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:35:41,915 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-08 16:35:41,918 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:35:41,935 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:35:41,938 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 16:35:41,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:41 BoogieIcfgContainer [2024-11-08 16:35:41,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:35:41,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:35:41,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:35:41,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:35:41,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:35:40" (1/3) ... [2024-11-08 16:35:41,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb95b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:41, skipping insertion in model container [2024-11-08 16:35:41,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:41" (2/3) ... [2024-11-08 16:35:41,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb95b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:41, skipping insertion in model container [2024-11-08 16:35:41,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:41" (3/3) ... [2024-11-08 16:35:41,949 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-89.i [2024-11-08 16:35:41,969 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:35:41,970 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:35:42,045 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:35:42,051 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@10166d0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:35:42,051 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:35:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 16:35:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-08 16:35:42,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:42,071 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:42,072 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:42,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1256098288, now seen corresponding path program 1 times [2024-11-08 16:35:42,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:42,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224110458] [2024-11-08 16:35:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:42,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 16:35:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 16:35:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 16:35:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:35:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 16:35:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 16:35:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 16:35:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 16:35:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 16:35:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:35:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-08 16:35:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:35:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 16:35:42,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:42,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224110458] [2024-11-08 16:35:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224110458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:42,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:42,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:35:42,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418175793] [2024-11-08 16:35:42,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:42,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:35:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:35:42,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:35:42,581 INFO L87 Difference]: Start difference. First operand has 52 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 16:35:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:42,617 INFO L93 Difference]: Finished difference Result 97 states and 164 transitions. [2024-11-08 16:35:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:35:42,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2024-11-08 16:35:42,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:42,631 INFO L225 Difference]: With dead ends: 97 [2024-11-08 16:35:42,631 INFO L226 Difference]: Without dead ends: 48 [2024-11-08 16:35:42,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:35:42,639 INFO L432 NwaCegarLoop]: 72 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, 72 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 [2024-11-08 16:35:42,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:35:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-08 16:35:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-08 16:35:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 16:35:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 72 transitions. [2024-11-08 16:35:42,685 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 72 transitions. Word has length 83 [2024-11-08 16:35:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:42,687 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 72 transitions. [2024-11-08 16:35:42,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 16:35:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 72 transitions. [2024-11-08 16:35:42,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-08 16:35:42,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:42,696 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:42,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:35:42,696 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:42,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:42,699 INFO L85 PathProgramCache]: Analyzing trace with hash 363169520, now seen corresponding path program 1 times [2024-11-08 16:35:42,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:42,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628935111] [2024-11-08 16:35:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:42,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 16:35:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-08 16:35:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 16:35:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:35:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 16:35:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 16:35:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-08 16:35:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 16:35:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 16:35:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:35:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-08 16:35:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:35:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 16:35:43,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:43,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628935111] [2024-11-08 16:35:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628935111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:35:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760138593] [2024-11-08 16:35:43,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:43,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:43,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:43,492 INFO L87 Difference]: Start difference. First operand 48 states and 72 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:35:43,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:43,586 INFO L93 Difference]: Finished difference Result 137 states and 208 transitions. [2024-11-08 16:35:43,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:35:43,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2024-11-08 16:35:43,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:43,589 INFO L225 Difference]: With dead ends: 137 [2024-11-08 16:35:43,592 INFO L226 Difference]: Without dead ends: 92 [2024-11-08 16:35:43,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:43,595 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 35 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:43,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 127 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:35:43,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-08 16:35:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2024-11-08 16:35:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 61 states have (on average 1.360655737704918) internal successors, (83), 61 states have internal predecessors, (83), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-08 16:35:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions. [2024-11-08 16:35:43,636 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 83 [2024-11-08 16:35:43,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:43,637 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 131 transitions. [2024-11-08 16:35:43,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:35:43,637 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions. [2024-11-08 16:35:43,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-08 16:35:43,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:43,639 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:43,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:35:43,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:43,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash 601437938, now seen corresponding path program 1 times [2024-11-08 16:35:43,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:43,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660507594] [2024-11-08 16:35:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:43,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 16:35:43,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378886558] [2024-11-08 16:35:43,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:43,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:43,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:43,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:35:43,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:35:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:35:43,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:35:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:35:44,013 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:35:44,014 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:35:44,015 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 16:35:44,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:35:44,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:35:44,224 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-08 16:35:44,304 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:35:44,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:35:44 BoogieIcfgContainer [2024-11-08 16:35:44,308 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:35:44,309 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:35:44,309 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:35:44,309 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:35:44,310 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:41" (3/4) ... [2024-11-08 16:35:44,313 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 16:35:44,315 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:35:44,316 INFO L158 Benchmark]: Toolchain (without parser) took 3540.20ms. Allocated memory is still 199.2MB. Free memory was 167.0MB in the beginning and 81.2MB in the end (delta: 85.9MB). Peak memory consumption was 86.9MB. Max. memory is 16.1GB. [2024-11-08 16:35:44,316 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:35:44,317 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.08ms. Allocated memory is still 199.2MB. Free memory was 166.2MB in the beginning and 150.6MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 16:35:44,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.48ms. Allocated memory is still 199.2MB. Free memory was 150.6MB in the beginning and 147.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:35:44,318 INFO L158 Benchmark]: Boogie Preprocessor took 68.88ms. Allocated memory is still 199.2MB. Free memory was 147.3MB in the beginning and 142.2MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:35:44,323 INFO L158 Benchmark]: RCFGBuilder took 648.63ms. Allocated memory is still 199.2MB. Free memory was 142.2MB in the beginning and 122.1MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-08 16:35:44,323 INFO L158 Benchmark]: TraceAbstraction took 2367.31ms. Allocated memory is still 199.2MB. Free memory was 121.3MB in the beginning and 82.2MB in the end (delta: 39.0MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2024-11-08 16:35:44,324 INFO L158 Benchmark]: Witness Printer took 6.35ms. Allocated memory is still 199.2MB. Free memory was 82.2MB in the beginning and 81.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:35:44,326 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.08ms. Allocated memory is still 199.2MB. Free memory was 166.2MB in the beginning and 150.6MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.48ms. Allocated memory is still 199.2MB. Free memory was 150.6MB in the beginning and 147.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.88ms. Allocated memory is still 199.2MB. Free memory was 147.3MB in the beginning and 142.2MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 648.63ms. Allocated memory is still 199.2MB. Free memory was 142.2MB in the beginning and 122.1MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2367.31ms. Allocated memory is still 199.2MB. Free memory was 121.3MB in the beginning and 82.2MB in the end (delta: 39.0MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * Witness Printer took 6.35ms. Allocated memory is still 199.2MB. Free memory was 82.2MB in the beginning and 81.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 120. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = 32; [L23] unsigned char var_1_4 = 0; [L24] unsigned short int var_1_8 = 32; [L25] signed long int var_1_9 = -16; [L26] unsigned short int var_1_10 = 5; [L27] unsigned char var_1_12 = 32; [L28] unsigned char var_1_13 = 1; [L29] unsigned char var_1_14 = 0; [L30] unsigned char var_1_15 = 0; [L31] double var_1_16 = 63.75; [L32] double var_1_17 = 8.5; [L33] signed short int var_1_18 = -64; [L34] signed long int last_1_var_1_1 = 32; [L35] unsigned char last_1_var_1_12 = 32; [L36] signed short int last_1_var_1_18 = -64; VAL [isInitial=0, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=-16] [L124] isInitial = 1 [L125] FCALL initially() [L126] COND TRUE 1 [L127] CALL updateLastVariables() [L115] last_1_var_1_1 = var_1_1 [L116] last_1_var_1_12 = var_1_12 [L117] last_1_var_1_18 = var_1_18 VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=-16] [L127] RET updateLastVariables() [L128] CALL updateVariables() [L95] var_1_4 = __VERIFIER_nondet_uchar() [L96] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_8=32, var_1_9=-16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_8=32, var_1_9=-16] [L96] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_8=32, var_1_9=-16] [L97] CALL assume_abort_if_not(var_1_4 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=-16] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=-16] [L97] RET assume_abort_if_not(var_1_4 <= 1) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=-16] [L98] var_1_9 = __VERIFIER_nondet_long() [L99] CALL assume_abort_if_not(var_1_9 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L99] RET assume_abort_if_not(var_1_9 >= -2147483648) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L100] CALL assume_abort_if_not(var_1_9 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L100] RET assume_abort_if_not(var_1_9 <= 2147483647) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L101] CALL assume_abort_if_not(var_1_9 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L101] RET assume_abort_if_not(var_1_9 != 0) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=5, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L102] var_1_10 = __VERIFIER_nondet_ushort() [L103] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L103] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L104] CALL assume_abort_if_not(var_1_10 <= 65534) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L104] RET assume_abort_if_not(var_1_10 <= 65534) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=1, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L105] var_1_13 = __VERIFIER_nondet_uchar() [L106] CALL assume_abort_if_not(var_1_13 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L106] RET assume_abort_if_not(var_1_13 >= 0) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L107] CALL assume_abort_if_not(var_1_13 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L107] RET assume_abort_if_not(var_1_13 <= 254) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L108] var_1_15 = __VERIFIER_nondet_uchar() [L109] CALL assume_abort_if_not(var_1_15 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L109] RET assume_abort_if_not(var_1_15 >= 0) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L110] CALL assume_abort_if_not(var_1_15 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L110] RET assume_abort_if_not(var_1_15 <= 0) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_17=17/2, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L111] var_1_17 = __VERIFIER_nondet_double() [L112] CALL assume_abort_if_not((var_1_17 >= -922337.2036854765600e+13F && var_1_17 <= -1.0e-20F) || (var_1_17 <= 9223372.036854765600e+12F && var_1_17 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L112] RET assume_abort_if_not((var_1_17 >= -922337.2036854765600e+13F && var_1_17 <= -1.0e-20F) || (var_1_17 <= 9223372.036854765600e+12F && var_1_17 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L128] RET updateVariables() [L129] CALL step() [L40] signed long int stepLocal_1 = last_1_var_1_18; [L41] signed long int stepLocal_0 = last_1_var_1_18; VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, stepLocal_0=-64, stepLocal_1=-64, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L42] COND FALSE !(stepLocal_1 >= (last_1_var_1_18 / var_1_9)) [L49] var_1_8 = last_1_var_1_12 VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, stepLocal_0=-64, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=-64, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L51] var_1_18 = var_1_8 VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, stepLocal_0=-64, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=32, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L52] COND FALSE !(var_1_10 < var_1_18) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, stepLocal_0=-64, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=32, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L63] unsigned short int stepLocal_2 = var_1_8; VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, stepLocal_0=-64, stepLocal_2=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=32, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L64] COND FALSE !(stepLocal_2 > (((((var_1_8) < (var_1_8)) ? (var_1_8) : (var_1_8))) + var_1_12)) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, stepLocal_0=-64, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=32, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L75] COND FALSE !(var_1_18 != var_1_12) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, stepLocal_0=-64, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=32, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L80] COND FALSE !(\read(var_1_14)) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, stepLocal_0=-64, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=255/4, var_1_18=32, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L87] COND FALSE !(\read(var_1_14)) [L90] var_1_16 = var_1_17 VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, stepLocal_0=-64, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=2, var_1_17=2, var_1_18=32, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L129] RET step() [L130] CALL, EXPR property() [L120-L121] return ((((((var_1_18 != var_1_12) ? (var_1_14 ? (var_1_1 == ((signed long int) ((((((((-5) > (var_1_12)) ? (-5) : (var_1_12)))) < (((((var_1_8) < (var_1_18)) ? (var_1_8) : (var_1_18))))) ? (((((-5) > (var_1_12)) ? (-5) : (var_1_12)))) : (((((var_1_8) < (var_1_18)) ? (var_1_8) : (var_1_18)))))))) : 1) : 1) && ((last_1_var_1_18 >= (last_1_var_1_18 / var_1_9)) ? ((last_1_var_1_18 < (last_1_var_1_1 * 256)) ? (var_1_8 == ((unsigned short int) ((((last_1_var_1_12) < (((((128) < (last_1_var_1_12)) ? (128) : (last_1_var_1_12))))) ? (last_1_var_1_12) : (((((128) < (last_1_var_1_12)) ? (128) : (last_1_var_1_12)))))))) : (var_1_8 == ((unsigned short int) last_1_var_1_12))) : (var_1_8 == ((unsigned short int) last_1_var_1_12)))) && ((var_1_10 < var_1_18) ? ((last_1_var_1_12 <= (5 - last_1_var_1_12)) ? (var_1_12 == ((unsigned char) var_1_13)) : ((last_1_var_1_12 == var_1_8) ? (var_1_12 == ((unsigned char) var_1_13)) : (var_1_12 == ((unsigned char) var_1_13)))) : 1)) && ((var_1_8 > (((((var_1_8) < (var_1_8)) ? (var_1_8) : (var_1_8))) + var_1_12)) ? ((! (var_1_8 >= var_1_12)) ? (var_1_4 ? (var_1_14 == ((unsigned char) 0)) : (var_1_14 == ((unsigned char) var_1_15))) : (var_1_14 == ((unsigned char) var_1_15))) : 1)) && (var_1_14 ? (var_1_15 ? (var_1_16 == ((double) var_1_17)) : (var_1_16 == ((double) (((((((((25.8) > (7.5)) ? (25.8) : (7.5))) - 50.25)) > (var_1_17)) ? ((((((25.8) > (7.5)) ? (25.8) : (7.5))) - 50.25)) : (var_1_17)))))) : (var_1_14 ? (var_1_16 == ((double) 5.2)) : (var_1_16 == ((double) var_1_17))))) && (var_1_18 == ((signed short int) var_1_8)) ; VAL [\result=0, isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=2, var_1_17=2, var_1_18=32, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L130] RET, EXPR property() [L130] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=2, var_1_17=2, var_1_18=32, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] [L19] reach_error() VAL [isInitial=1, last_1_var_1_12=32, last_1_var_1_18=-64, last_1_var_1_1=32, var_1_10=32, var_1_12=32, var_1_13=0, var_1_14=0, var_1_15=0, var_1_16=2, var_1_17=2, var_1_18=32, var_1_1=32, var_1_4=0, var_1_8=32, var_1_9=64] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 199 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 140 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=2, 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 332 NumberOfCodeBlocks, 332 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 528/528 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 [2024-11-08 16:35:44,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --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 c2c3bc2dc26c2558761493393203484f1e6d565a95170aac1e726e11bfe9e50e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:35:46,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:35:46,999 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-08 16:35:47,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:35:47,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:35:47,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:35:47,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:35:47,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:35:47,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:35:47,052 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:35:47,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:35:47,053 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:35:47,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:35:47,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:35:47,056 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:35:47,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:35:47,057 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:35:47,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:35:47,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:35:47,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:35:47,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:35:47,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:35:47,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:35:47,064 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:35:47,064 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 16:35:47,064 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:35:47,065 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 16:35:47,065 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:35:47,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:35:47,066 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:35:47,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:35:47,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:35:47,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:35:47,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:35:47,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:47,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:35:47,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:35:47,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:35:47,069 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 16:35:47,069 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 16:35:47,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:35:47,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:35:47,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:35:47,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:35:47,073 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2c3bc2dc26c2558761493393203484f1e6d565a95170aac1e726e11bfe9e50e [2024-11-08 16:35:47,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:35:47,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:35:47,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:35:47,483 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:35:47,484 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:35:47,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i Unable to find full path for "g++" [2024-11-08 16:35:49,549 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:35:49,796 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:35:49,797 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i [2024-11-08 16:35:49,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/data/8be1cece7/8e04bf27e3214fd9b92f4820f0a49183/FLAG04f26a075 [2024-11-08 16:35:49,834 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/data/8be1cece7/8e04bf27e3214fd9b92f4820f0a49183 [2024-11-08 16:35:49,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:35:49,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:35:49,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:49,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:35:49,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:35:49,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:49" (1/1) ... [2024-11-08 16:35:49,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b50514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:49, skipping insertion in model container [2024-11-08 16:35:49,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:49" (1/1) ... [2024-11-08 16:35:49,883 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:35:50,119 WARN L250 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_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i[915,928] [2024-11-08 16:35:50,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:50,233 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:35:50,248 WARN L250 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_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-89.i[915,928] [2024-11-08 16:35:50,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:50,355 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:35:50,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50 WrapperNode [2024-11-08 16:35:50,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:50,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:50,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:35:50,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:35:50,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,424 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112 [2024-11-08 16:35:50,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:50,426 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:35:50,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:35:50,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:35:50,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,477 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 16:35:50,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:35:50,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:35:50,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:35:50,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:35:50,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (1/1) ... [2024-11-08 16:35:50,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:50,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:35:50,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:35:50,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:35:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:35:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 16:35:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 16:35:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 16:35:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:35:50,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:35:50,695 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:35:50,698 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:35:51,268 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-08 16:35:51,268 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:35:51,290 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:35:51,290 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 16:35:51,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:51 BoogieIcfgContainer [2024-11-08 16:35:51,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:35:51,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:35:51,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:35:51,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:35:51,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:35:49" (1/3) ... [2024-11-08 16:35:51,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46cecfe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:51, skipping insertion in model container [2024-11-08 16:35:51,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:50" (2/3) ... [2024-11-08 16:35:51,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46cecfe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:51, skipping insertion in model container [2024-11-08 16:35:51,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:51" (3/3) ... [2024-11-08 16:35:51,304 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-89.i [2024-11-08 16:35:51,325 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:35:51,325 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:35:51,390 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:35:51,397 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@3cbd0e1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:35:51,398 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:35:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 16:35:51,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-08 16:35:51,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:51,418 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:51,418 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:51,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:51,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1256098288, now seen corresponding path program 1 times [2024-11-08 16:35:51,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 16:35:51,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378830406] [2024-11-08 16:35:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:51,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 16:35:51,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 16:35:51,457 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 16:35:51,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-08 16:35:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:51,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 16:35:51,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-08 16:35:51,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:35:51,826 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 16:35:51,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378830406] [2024-11-08 16:35:51,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378830406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:51,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:51,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:35:51,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718117782] [2024-11-08 16:35:51,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:51,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:35:51,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 16:35:51,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:35:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:35:51,873 INFO L87 Difference]: Start difference. First operand has 52 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 38 states have internal predecessors, (55), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 16:35:51,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:51,899 INFO L93 Difference]: Finished difference Result 97 states and 164 transitions. [2024-11-08 16:35:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:35:51,901 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2024-11-08 16:35:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:51,909 INFO L225 Difference]: With dead ends: 97 [2024-11-08 16:35:51,909 INFO L226 Difference]: Without dead ends: 48 [2024-11-08 16:35:51,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:35:51,916 INFO L432 NwaCegarLoop]: 72 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, 72 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 [2024-11-08 16:35:51,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:35:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-08 16:35:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-08 16:35:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-08 16:35:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 72 transitions. [2024-11-08 16:35:51,983 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 72 transitions. Word has length 83 [2024-11-08 16:35:51,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:51,984 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 72 transitions. [2024-11-08 16:35:51,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 16:35:51,984 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 72 transitions. [2024-11-08 16:35:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-08 16:35:51,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:51,991 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:52,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-08 16:35:52,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 16:35:52,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:52,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:52,193 INFO L85 PathProgramCache]: Analyzing trace with hash 363169520, now seen corresponding path program 1 times [2024-11-08 16:35:52,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 16:35:52,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908217195] [2024-11-08 16:35:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:52,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 16:35:52,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 16:35:52,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 16:35:52,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-08 16:35:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:52,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:35:52,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:35:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-08 16:35:52,867 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:35:52,867 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 16:35:52,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908217195] [2024-11-08 16:35:52,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908217195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:52,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:52,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:35:52,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116139258] [2024-11-08 16:35:52,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:52,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:35:52,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 16:35:52,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:35:52,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:52,873 INFO L87 Difference]: Start difference. First operand 48 states and 72 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:35:53,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:53,142 INFO L93 Difference]: Finished difference Result 136 states and 206 transitions. [2024-11-08 16:35:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:35:53,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2024-11-08 16:35:53,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:53,145 INFO L225 Difference]: With dead ends: 136 [2024-11-08 16:35:53,145 INFO L226 Difference]: Without dead ends: 91 [2024-11-08 16:35:53,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:35:53,147 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 20 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:53,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 126 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:35:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-08 16:35:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-11-08 16:35:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-08 16:35:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 129 transitions. [2024-11-08 16:35:53,179 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 129 transitions. Word has length 83 [2024-11-08 16:35:53,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:53,180 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 129 transitions. [2024-11-08 16:35:53,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 16:35:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 129 transitions. [2024-11-08 16:35:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-08 16:35:53,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:53,184 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:53,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-08 16:35:53,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 16:35:53,385 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:53,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:53,386 INFO L85 PathProgramCache]: Analyzing trace with hash 601437938, now seen corresponding path program 1 times [2024-11-08 16:35:53,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 16:35:53,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354454535] [2024-11-08 16:35:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:53,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-08 16:35:53,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat [2024-11-08 16:35:53,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-08 16:35:53,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b1b4a62-6757-4c95-b9f8-20fff6ed5a2e/bin/uautomizer-verify-jihMAELWvX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-08 16:35:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 16:35:53,642 INFO L278 TraceCheckSpWp]: Computing forward predicates...