./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1 --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 53ac7479a950235157217cca437cf6f6e0f377d0e27ff61b959bf8258dd5b0ad --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:45:42,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:45:42,859 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:45:42,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:45:42,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:45:42,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:45:42,883 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:45:42,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:45:42,884 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:45:42,884 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:45:42,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:45:42,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:45:42,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:45:42,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:45:42,885 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:45:42,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:45:42,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:45:42,885 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:45:42,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:45:42,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:45:42,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:45:42,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:45:42,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:45:42,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:45:42,886 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:45:42,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:45:42,886 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:45:42,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:45:42,886 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:45:42,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:45:42,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:45:42,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:45:42,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:45:42,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:45:42,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:45:42,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:45:42,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:45:42,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:45:42,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:45:42,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:45:42,887 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:45:42,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:45:42,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:45:42,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:45:42,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:45:42,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:45:42,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:45:42,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:45:42,888 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1 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 -> 53ac7479a950235157217cca437cf6f6e0f377d0e27ff61b959bf8258dd5b0ad [2024-12-02 11:45:43,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:45:43,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:45:43,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:45:43,093 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:45:43,093 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:45:43,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i [2024-12-02 11:45:45,800 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/data/1ad6c77ed/c9f507fbe60b4a2a87230ffdbd0c016e/FLAG0484bc0f0 [2024-12-02 11:45:45,991 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:45:45,991 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i [2024-12-02 11:45:45,999 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/data/1ad6c77ed/c9f507fbe60b4a2a87230ffdbd0c016e/FLAG0484bc0f0 [2024-12-02 11:45:46,013 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/data/1ad6c77ed/c9f507fbe60b4a2a87230ffdbd0c016e [2024-12-02 11:45:46,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:45:46,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:45:46,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:45:46,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:45:46,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:45:46,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4819d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46, skipping insertion in model container [2024-12-02 11:45:46,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,043 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:45:46,172 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_1b606211-ce53-4bb6-99e2-f3c0f0fef755/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i[913,926] [2024-12-02 11:45:46,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:45:46,219 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:45:46,229 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_1b606211-ce53-4bb6-99e2-f3c0f0fef755/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i[913,926] [2024-12-02 11:45:46,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:45:46,262 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:45:46,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46 WrapperNode [2024-12-02 11:45:46,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:45:46,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:45:46,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:45:46,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:45:46,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,306 INFO L138 Inliner]: procedures = 26, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 84 [2024-12-02 11:45:46,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:45:46,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:45:46,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:45:46,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:45:46,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,320 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,333 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]. [2024-12-02 11:45:46,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,339 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,347 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:45:46,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:45:46,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:45:46,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:45:46,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (1/1) ... [2024-12-02 11:45:46,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:45:46,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:45:46,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:45:46,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:45:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:45:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:45:46,410 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:45:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:45:46,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:45:46,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:45:46,478 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:45:46,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:45:46,650 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-12-02 11:45:46,651 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:45:46,660 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:45:46,661 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:45:46,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:45:46 BoogieIcfgContainer [2024-12-02 11:45:46,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:45:46,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:45:46,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:45:46,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:45:46,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:45:46" (1/3) ... [2024-12-02 11:45:46,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c9c1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:45:46, skipping insertion in model container [2024-12-02 11:45:46,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:46" (2/3) ... [2024-12-02 11:45:46,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c9c1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:45:46, skipping insertion in model container [2024-12-02 11:45:46,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:45:46" (3/3) ... [2024-12-02 11:45:46,670 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-21.i [2024-12-02 11:45:46,681 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:45:46,682 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_normal_file-21.i that has 2 procedures, 39 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:45:46,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:45:46,737 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;@7ab73cb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:45:46,737 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:45:46,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-12-02 11:45:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 11:45:46,746 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:45:46,746 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2024-12-02 11:45:46,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:45:46,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:45:46,750 INFO L85 PathProgramCache]: Analyzing trace with hash -510096507, now seen corresponding path program 1 times [2024-12-02 11:45:46,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:45:46,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299546863] [2024-12-02 11:45:46,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:45:46,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:45:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:45:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 11:45:46,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:45:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299546863] [2024-12-02 11:45:46,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299546863] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:45:46,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601712070] [2024-12-02 11:45:46,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:45:46,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:45:46,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:45:46,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:45:46,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:45:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:45:47,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:45:47,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:45:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-12-02 11:45:47,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:45:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601712070] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:45:47,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:45:47,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 11:45:47,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928054368] [2024-12-02 11:45:47,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:45:47,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:45:47,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:45:47,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:45:47,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:45:47,061 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 11:45:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:45:47,076 INFO L93 Difference]: Finished difference Result 71 states and 111 transitions. [2024-12-02 11:45:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:45:47,078 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2024-12-02 11:45:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:45:47,082 INFO L225 Difference]: With dead ends: 71 [2024-12-02 11:45:47,082 INFO L226 Difference]: Without dead ends: 35 [2024-12-02 11:45:47,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:45:47,086 INFO L435 NwaCegarLoop]: 48 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, 48 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 [2024-12-02 11:45:47,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:45:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-12-02 11:45:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-12-02 11:45:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-12-02 11:45:47,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2024-12-02 11:45:47,113 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 53 [2024-12-02 11:45:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:45:47,114 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2024-12-02 11:45:47,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 11:45:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2024-12-02 11:45:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 11:45:47,115 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:45:47,116 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2024-12-02 11:45:47,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:45:47,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:45:47,316 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:45:47,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:45:47,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1104841853, now seen corresponding path program 1 times [2024-12-02 11:45:47,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:45:47,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888796033] [2024-12-02 11:45:47,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:45:47,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:45:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:45:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 11:45:49,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:45:49,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888796033] [2024-12-02 11:45:49,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888796033] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:45:49,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:45:49,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 11:45:49,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306384143] [2024-12-02 11:45:49,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:45:49,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:45:49,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:45:49,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:45:49,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:45:49,059 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 11:45:49,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:45:49,451 INFO L93 Difference]: Finished difference Result 122 states and 166 transitions. [2024-12-02 11:45:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:45:49,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 53 [2024-12-02 11:45:49,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:45:49,453 INFO L225 Difference]: With dead ends: 122 [2024-12-02 11:45:49,453 INFO L226 Difference]: Without dead ends: 90 [2024-12-02 11:45:49,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:45:49,454 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 60 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:45:49,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 297 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:45:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-12-02 11:45:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 80. [2024-12-02 11:45:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 60 states have internal predecessors, (71), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-12-02 11:45:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2024-12-02 11:45:49,471 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 53 [2024-12-02 11:45:49,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:45:49,471 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2024-12-02 11:45:49,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 11:45:49,471 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2024-12-02 11:45:49,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 11:45:49,473 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:45:49,473 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2024-12-02 11:45:49,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:45:49,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:45:49,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:45:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1443072449, now seen corresponding path program 1 times [2024-12-02 11:45:49,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:45:49,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271538222] [2024-12-02 11:45:49,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:45:49,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:45:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:45:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 11:45:50,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:45:50,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271538222] [2024-12-02 11:45:50,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271538222] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:45:50,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:45:50,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 11:45:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971054137] [2024-12-02 11:45:50,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:45:50,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:45:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:45:50,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:45:50,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:45:50,368 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 11:45:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:45:51,189 INFO L93 Difference]: Finished difference Result 197 states and 262 transitions. [2024-12-02 11:45:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 11:45:51,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 55 [2024-12-02 11:45:51,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:45:51,193 INFO L225 Difference]: With dead ends: 197 [2024-12-02 11:45:51,193 INFO L226 Difference]: Without dead ends: 165 [2024-12-02 11:45:51,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2024-12-02 11:45:51,194 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 195 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:45:51,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 312 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:45:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-12-02 11:45:51,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 135. [2024-12-02 11:45:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 99 states have internal predecessors, (116), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 11:45:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 178 transitions. [2024-12-02 11:45:51,224 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 178 transitions. Word has length 55 [2024-12-02 11:45:51,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:45:51,224 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 178 transitions. [2024-12-02 11:45:51,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 11:45:51,224 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 178 transitions. [2024-12-02 11:45:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 11:45:51,225 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:45:51,225 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2024-12-02 11:45:51,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:45:51,226 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:45:51,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:45:51,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1551859698, now seen corresponding path program 1 times [2024-12-02 11:45:51,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:45:51,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802515357] [2024-12-02 11:45:51,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:45:51,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:45:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:45:51,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883040499] [2024-12-02 11:45:51,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:45:51,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:45:51,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:45:51,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:45:51,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:45:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:45:51,323 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:45:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:45:51,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 11:45:51,370 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 11:45:51,371 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 11:45:51,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:45:51,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:45:51,576 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-12-02 11:45:51,609 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 11:45:51,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:45:51 BoogieIcfgContainer [2024-12-02 11:45:51,612 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 11:45:51,613 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 11:45:51,613 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 11:45:51,613 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 11:45:51,613 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:45:46" (3/4) ... [2024-12-02 11:45:51,615 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 11:45:51,616 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 11:45:51,617 INFO L158 Benchmark]: Toolchain (without parser) took 5599.96ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 92.3MB in the beginning and 94.4MB in the end (delta: -2.1MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2024-12-02 11:45:51,617 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:45:51,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.64ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 79.5MB in the end (delta: 12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 11:45:51,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.09ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 77.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:45:51,618 INFO L158 Benchmark]: Boogie Preprocessor took 40.35ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 74.8MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:45:51,618 INFO L158 Benchmark]: RCFGBuilder took 312.91ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 61.4MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 11:45:51,618 INFO L158 Benchmark]: TraceAbstraction took 4948.32ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 60.8MB in the beginning and 94.5MB in the end (delta: -33.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:45:51,619 INFO L158 Benchmark]: Witness Printer took 3.64ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 94.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:45:51,620 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.64ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 79.5MB in the end (delta: 12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.09ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 77.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.35ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 74.8MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 312.91ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 61.4MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4948.32ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 60.8MB in the beginning and 94.5MB in the end (delta: -33.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.64ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 94.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 someBinaryFLOATComparisonOperation at line 71, overapproximation of someBinaryFLOATComparisonOperation at line 73, overapproximation of someBinaryDOUBLEComparisonOperation at line 66, overapproximation of someBinaryDOUBLEComparisonOperation at line 80, overapproximation of someBinaryDOUBLEComparisonOperation at line 64, overapproximation of someBinaryDOUBLEComparisonOperation at line 62, overapproximation of someBinaryDOUBLEComparisonOperation at line 46, overapproximation of someBinaryDOUBLEComparisonOperation at line 52. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 32; [L23] unsigned char var_1_7 = 0; [L24] double var_1_8 = 15.6; [L25] double var_1_9 = 15.4; [L26] double var_1_10 = 32.2; [L27] unsigned char var_1_12 = 1; [L28] signed short int var_1_13 = 256; [L29] float var_1_14 = 5.75; [L30] float var_1_15 = 8.6; [L31] unsigned char last_1_var_1_7 = 0; [L32] signed short int last_1_var_1_13 = 256; VAL [isInitial=0, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10=161/5, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0, var_1_8=78/5, var_1_9=77/5] [L84] isInitial = 1 [L85] FCALL initially() [L87] CALL updateLastVariables() [L76] last_1_var_1_7 = var_1_7 [L77] last_1_var_1_13 = var_1_13 VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10=161/5, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0, var_1_8=78/5, var_1_9=77/5] [L87] RET updateLastVariables() [L88] CALL updateVariables() [L61] var_1_8 = __VERIFIER_nondet_double() [L62] CALL assume_abort_if_not((var_1_8 >= -922337.2036854776000e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10=161/5, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0, var_1_9=77/5] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10=161/5, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0, var_1_9=77/5] [L62] RET assume_abort_if_not((var_1_8 >= -922337.2036854776000e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10=161/5, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0, var_1_9=77/5] [L63] var_1_9 = __VERIFIER_nondet_double() [L64] CALL assume_abort_if_not((var_1_9 >= -922337.2036854776000e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854776000e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10=161/5, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10=161/5, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L64] RET assume_abort_if_not((var_1_9 >= -922337.2036854776000e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854776000e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10=161/5, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L65] var_1_10 = __VERIFIER_nondet_double() [L66] CALL assume_abort_if_not((var_1_10 >= -922337.2036854776000e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854776000e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L66] RET assume_abort_if_not((var_1_10 >= -922337.2036854776000e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854776000e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L67] var_1_12 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_12 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L68] RET assume_abort_if_not(var_1_12 >= 1) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L69] CALL assume_abort_if_not(var_1_12 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L69] RET assume_abort_if_not(var_1_12 <= 1) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_14=23/4, var_1_15=43/5, var_1_1=32, var_1_7=0] [L70] var_1_14 = __VERIFIER_nondet_float() [L71] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_15=43/5, var_1_1=32, var_1_7=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_15=43/5, var_1_1=32, var_1_7=0] [L71] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_15=43/5, var_1_1=32, var_1_7=0] [L72] var_1_15 = __VERIFIER_nondet_float() [L73] CALL assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_1=32, var_1_7=0] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_1=32, var_1_7=0] [L73] RET assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_1=32, var_1_7=0] [L88] RET updateVariables() [L89] CALL step() [L36] COND TRUE (last_1_var_1_13 + ((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))) < (last_1_var_1_13 * last_1_var_1_13) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_1=32, var_1_7=0] [L37] COND FALSE !(last_1_var_1_13 < (last_1_var_1_13 - last_1_var_1_13)) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_1=32, var_1_7=0] [L45] COND TRUE \read(var_1_12) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=256, var_1_1=32, var_1_7=0] [L46] COND TRUE (var_1_14 - var_1_15) >= ((var_1_8 + var_1_10) + var_1_9) [L47] var_1_13 = ((((var_1_1) > (var_1_1)) ? (var_1_1) : (var_1_1))) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=32, var_1_1=32, var_1_7=0] [L52] COND TRUE ((((var_1_8) < (var_1_9)) ? (var_1_8) : (var_1_9))) <= var_1_10 VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=32, var_1_1=32, var_1_7=0] [L53] COND FALSE !(last_1_var_1_7 && (var_1_1 >= var_1_1)) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=32, var_1_1=32, var_1_7=0] [L89] RET step() [L90] CALL, EXPR property() [L80-L81] return ((((last_1_var_1_13 + ((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))) < (last_1_var_1_13 * last_1_var_1_13)) ? ((last_1_var_1_13 < (last_1_var_1_13 - last_1_var_1_13)) ? ((last_1_var_1_13 != (((((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) < 0 ) ? -((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) : ((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))))) ? (var_1_1 == ((unsigned short int) last_1_var_1_13)) : 1) : 1) : (var_1_1 == ((unsigned short int) last_1_var_1_13))) && ((((((var_1_8) < (var_1_9)) ? (var_1_8) : (var_1_9))) <= var_1_10) ? ((last_1_var_1_7 && (var_1_1 >= var_1_1)) ? (var_1_7 == ((unsigned char) 0)) : 1) : (var_1_7 == ((unsigned char) var_1_12)))) && (var_1_12 ? (((var_1_14 - var_1_15) >= ((var_1_8 + var_1_10) + var_1_9)) ? (var_1_13 == ((signed short int) ((((var_1_1) > (var_1_1)) ? (var_1_1) : (var_1_1))))) : (var_1_13 == ((signed short int) var_1_1))) : 1) ; VAL [\result=0, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=32, var_1_1=32, var_1_7=0] [L90] RET, EXPR property() [L90] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=32, var_1_1=32, var_1_7=0] [L19] reach_error() VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_12=1, var_1_13=32, var_1_1=32, var_1_7=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 4, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 255 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 255 mSDsluCounter, 657 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 490 mSDsCounter, 127 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 344 IncrementalHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 127 mSolverCounterUnsat, 167 mSDtfsCounter, 344 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=3, InterpolantAutomatonStates: 27, 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, 3 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 871 SizeOfPredicates, 0 NumberOfNonLiveVariables, 143 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 324/336 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 11:45:51,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1 --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 53ac7479a950235157217cca437cf6f6e0f377d0e27ff61b959bf8258dd5b0ad --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:45:53,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:45:53,654 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 11:45:53,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:45:53,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:45:53,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:45:53,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:45:53,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:45:53,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:45:53,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:45:53,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:45:53,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:45:53,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:45:53,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:45:53,684 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:45:53,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:45:53,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:45:53,684 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:45:53,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:45:53,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:45:53,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:45:53,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:45:53,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:45:53,685 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 11:45:53,685 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 11:45:53,685 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 11:45:53,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:45:53,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:45:53,685 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:45:53,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:45:53,685 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:45:53,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:45:53,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:45:53,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:45:53,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:45:53,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:45:53,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:45:53,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:45:53,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:45:53,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:45:53,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:45:53,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:45:53,687 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:45:53,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:45:53,687 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 11:45:53,687 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 11:45:53,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:45:53,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:45:53,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:45:53,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:45:53,687 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1 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 -> 53ac7479a950235157217cca437cf6f6e0f377d0e27ff61b959bf8258dd5b0ad [2024-12-02 11:45:53,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:45:53,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:45:53,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:45:53,927 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:45:53,928 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:45:53,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i [2024-12-02 11:45:56,606 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/data/25834eee0/5b4bb4ae7f26413386943958fec50a15/FLAG73ecacaa8 [2024-12-02 11:45:56,800 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:45:56,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i [2024-12-02 11:45:56,809 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/data/25834eee0/5b4bb4ae7f26413386943958fec50a15/FLAG73ecacaa8 [2024-12-02 11:45:56,823 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/data/25834eee0/5b4bb4ae7f26413386943958fec50a15 [2024-12-02 11:45:56,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:45:56,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:45:56,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:45:56,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:45:56,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:45:56,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:45:56" (1/1) ... [2024-12-02 11:45:56,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0e6edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:56, skipping insertion in model container [2024-12-02 11:45:56,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:45:56" (1/1) ... [2024-12-02 11:45:56,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:45:56,977 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_1b606211-ce53-4bb6-99e2-f3c0f0fef755/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i[913,926] [2024-12-02 11:45:57,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:45:57,024 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:45:57,032 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_1b606211-ce53-4bb6-99e2-f3c0f0fef755/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-21.i[913,926] [2024-12-02 11:45:57,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:45:57,068 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:45:57,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57 WrapperNode [2024-12-02 11:45:57,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:45:57,069 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:45:57,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:45:57,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:45:57,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,104 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 84 [2024-12-02 11:45:57,105 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:45:57,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:45:57,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:45:57,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:45:57,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,124 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]. [2024-12-02 11:45:57,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,132 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,136 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,137 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:45:57,142 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:45:57,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:45:57,142 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:45:57,143 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (1/1) ... [2024-12-02 11:45:57,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:45:57,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:45:57,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:45:57,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:45:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:45:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 11:45:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:45:57,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:45:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:45:57,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:45:57,249 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:45:57,250 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:46:04,802 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-12-02 11:46:04,802 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:46:04,815 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:46:04,816 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:46:04,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:46:04 BoogieIcfgContainer [2024-12-02 11:46:04,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:46:04,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:46:04,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:46:04,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:46:04,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:45:56" (1/3) ... [2024-12-02 11:46:04,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13807f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:46:04, skipping insertion in model container [2024-12-02 11:46:04,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:45:57" (2/3) ... [2024-12-02 11:46:04,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13807f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:46:04, skipping insertion in model container [2024-12-02 11:46:04,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:46:04" (3/3) ... [2024-12-02 11:46:04,824 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-21.i [2024-12-02 11:46:04,835 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:46:04,836 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_normal_file-21.i that has 2 procedures, 39 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:46:04,875 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:46:04,884 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;@5179d65e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:46:04,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:46:04,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-12-02 11:46:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 11:46:04,892 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:46:04,892 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2024-12-02 11:46:04,893 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:46:04,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:46:04,896 INFO L85 PathProgramCache]: Analyzing trace with hash -510096507, now seen corresponding path program 1 times [2024-12-02 11:46:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:46:04,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962560286] [2024-12-02 11:46:04,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:46:04,905 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 [2024-12-02 11:46:04,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:46:04,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 11:46:04,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:46:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:46:05,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:46:05,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:46:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 11:46:05,103 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:46:05,103 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:46:05,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962560286] [2024-12-02 11:46:05,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962560286] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:46:05,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:46:05,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:46:05,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115394708] [2024-12-02 11:46:05,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:46:05,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:46:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:46:05,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:46:05,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:46:05,126 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 30 states have internal predecessors, (41), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 11:46:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:46:05,140 INFO L93 Difference]: Finished difference Result 71 states and 111 transitions. [2024-12-02 11:46:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:46:05,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2024-12-02 11:46:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:46:05,147 INFO L225 Difference]: With dead ends: 71 [2024-12-02 11:46:05,147 INFO L226 Difference]: Without dead ends: 35 [2024-12-02 11:46:05,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:46:05,153 INFO L435 NwaCegarLoop]: 48 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, 48 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 [2024-12-02 11:46:05,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:46:05,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-12-02 11:46:05,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-12-02 11:46:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-12-02 11:46:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2024-12-02 11:46:05,186 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 53 [2024-12-02 11:46:05,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:46:05,186 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2024-12-02 11:46:05,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 11:46:05,186 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2024-12-02 11:46:05,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 11:46:05,188 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:46:05,188 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2024-12-02 11:46:05,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:46:05,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:46:05,389 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:46:05,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:46:05,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1104841853, now seen corresponding path program 1 times [2024-12-02 11:46:05,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:46:05,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840516423] [2024-12-02 11:46:05,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:46:05,390 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 [2024-12-02 11:46:05,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:46:05,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 11:46:05,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:46:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:46:05,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:46:05,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:46:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 11:46:05,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:46:05,878 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:46:05,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840516423] [2024-12-02 11:46:05,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840516423] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:46:05,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:46:05,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:46:05,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750569961] [2024-12-02 11:46:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:46:05,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:46:05,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:46:05,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:46:05,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:46:05,881 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 11:46:08,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:46:10,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:46:13,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:46:15,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:46:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:46:15,817 INFO L93 Difference]: Finished difference Result 107 states and 147 transitions. [2024-12-02 11:46:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:46:15,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 53 [2024-12-02 11:46:15,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:46:15,838 INFO L225 Difference]: With dead ends: 107 [2024-12-02 11:46:15,838 INFO L226 Difference]: Without dead ends: 75 [2024-12-02 11:46:15,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:46:15,839 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 53 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:46:15,840 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 122 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-12-02 11:46:15,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-12-02 11:46:15,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2024-12-02 11:46:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-12-02 11:46:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2024-12-02 11:46:15,855 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 53 [2024-12-02 11:46:15,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:46:15,856 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2024-12-02 11:46:15,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 11:46:15,856 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2024-12-02 11:46:15,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 11:46:15,857 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:46:15,857 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2024-12-02 11:46:15,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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)] Ended with exit code 0 [2024-12-02 11:46:16,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:46:16,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:46:16,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:46:16,059 INFO L85 PathProgramCache]: Analyzing trace with hash 706987382, now seen corresponding path program 1 times [2024-12-02 11:46:16,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:46:16,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083560250] [2024-12-02 11:46:16,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:46:16,059 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 [2024-12-02 11:46:16,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:46:16,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 11:46:16,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:46:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:46:16,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:46:16,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:46:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 11:46:16,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:46:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-12-02 11:46:16,640 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:46:16,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083560250] [2024-12-02 11:46:16,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083560250] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:46:16,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:46:16,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-12-02 11:46:16,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497075621] [2024-12-02 11:46:16,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:46:16,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:46:16,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:46:16,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:46:16,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:46:16,642 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 11:46:20,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:46:22,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:46:22,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:46:22,619 INFO L93 Difference]: Finished difference Result 125 states and 166 transitions. [2024-12-02 11:46:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:46:22,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 54 [2024-12-02 11:46:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:46:22,638 INFO L225 Difference]: With dead ends: 125 [2024-12-02 11:46:22,638 INFO L226 Difference]: Without dead ends: 65 [2024-12-02 11:46:22,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:46:22,639 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 26 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:46:22,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 93 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2024-12-02 11:46:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-12-02 11:46:22,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2024-12-02 11:46:22,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-12-02 11:46:22,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2024-12-02 11:46:22,650 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 54 [2024-12-02 11:46:22,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:46:22,651 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2024-12-02 11:46:22,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 11:46:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2024-12-02 11:46:22,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 11:46:22,652 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:46:22,652 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2024-12-02 11:46:22,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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)] Ended with exit code 0 [2024-12-02 11:46:22,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:46:22,852 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:46:22,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:46:22,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1443072449, now seen corresponding path program 1 times [2024-12-02 11:46:22,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:46:22,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041122810] [2024-12-02 11:46:22,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:46:22,853 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 [2024-12-02 11:46:22,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:46:22,855 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 11:46:22,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-12-02 11:46:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:46:23,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 11:46:23,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:48:02,971 WARN L286 SmtUtils]: Spent 5.99s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:48:08,556 WARN L286 SmtUtils]: Spent 5.52s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:48:16,178 WARN L286 SmtUtils]: Spent 7.62s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:48:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 11:48:19,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:48:19,292 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:48:19,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041122810] [2024-12-02 11:48:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041122810] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:48:19,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:48:19,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:48:19,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351919869] [2024-12-02 11:48:19,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:48:19,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:48:19,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:48:19,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:48:19,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:48:19,294 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 11:48:22,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:48:24,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:48:27,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:48:31,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:48:32,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:48:35,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:48:35,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:48:35,388 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2024-12-02 11:48:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:48:35,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 55 [2024-12-02 11:48:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:48:35,390 INFO L225 Difference]: With dead ends: 116 [2024-12-02 11:48:35,390 INFO L226 Difference]: Without dead ends: 80 [2024-12-02 11:48:35,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:48:35,391 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 37 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:48:35,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 217 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 94 Invalid, 1 Unknown, 0 Unchecked, 15.9s Time] [2024-12-02 11:48:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-02 11:48:35,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-12-02 11:48:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-12-02 11:48:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2024-12-02 11:48:35,404 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 55 [2024-12-02 11:48:35,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:48:35,404 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2024-12-02 11:48:35,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 11:48:35,405 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2024-12-02 11:48:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 11:48:35,406 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:48:35,406 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2024-12-02 11:48:35,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-12-02 11:48:35,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:48:35,606 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:48:35,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:48:35,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1551859698, now seen corresponding path program 1 times [2024-12-02 11:48:35,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:48:35,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093853093] [2024-12-02 11:48:35,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:48:35,607 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 [2024-12-02 11:48:35,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:48:35,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 11:48:35,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-12-02 11:48:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:48:35,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 11:48:35,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:50:50,500 WARN L286 SmtUtils]: Spent 6.35s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:50:57,728 WARN L286 SmtUtils]: Spent 6.35s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:51:04,257 WARN L286 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:51:14,469 WARN L286 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:51:20,194 WARN L286 SmtUtils]: Spent 5.69s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:51:34,798 WARN L286 SmtUtils]: Spent 7.17s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:51:42,653 WARN L286 SmtUtils]: Spent 7.85s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:51:49,340 WARN L286 SmtUtils]: Spent 6.67s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:51:59,751 WARN L286 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:52:02,949 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 11:52:02,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:52:02,949 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:52:02,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093853093] [2024-12-02 11:52:02,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093853093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:52:02,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:52:02,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:52:02,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800278450] [2024-12-02 11:52:02,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:52:02,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:52:02,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:52:02,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:52:02,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:52:02,951 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 11:52:07,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:09,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:12,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.46s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:15,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:18,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:22,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:26,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:26,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:52:26,245 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-12-02 11:52:26,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:52:26,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2024-12-02 11:52:26,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:52:26,247 INFO L225 Difference]: With dead ends: 78 [2024-12-02 11:52:26,247 INFO L226 Difference]: Without dead ends: 76 [2024-12-02 11:52:26,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:52:26,248 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 24 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:52:26,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 216 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 81 Invalid, 1 Unknown, 0 Unchecked, 22.9s Time] [2024-12-02 11:52:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-12-02 11:52:26,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2024-12-02 11:52:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-12-02 11:52:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2024-12-02 11:52:26,259 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 56 [2024-12-02 11:52:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:52:26,260 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2024-12-02 11:52:26,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-12-02 11:52:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2024-12-02 11:52:26,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 11:52:26,262 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:52:26,262 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:52:26,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-12-02 11:52:26,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:52:26,462 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:52:26,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:52:26,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1347078643, now seen corresponding path program 1 times [2024-12-02 11:52:26,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:52:26,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98470766] [2024-12-02 11:52:26,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:52:26,463 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 [2024-12-02 11:52:26,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:52:26,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 11:52:26,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-12-02 11:52:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:52:26,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:52:26,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:52:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 6 proven. 212 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-12-02 11:52:27,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:52:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-12-02 11:52:32,132 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:52:32,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98470766] [2024-12-02 11:52:32,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98470766] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:52:32,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:52:32,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2024-12-02 11:52:32,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890552819] [2024-12-02 11:52:32,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:52:32,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:52:32,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:52:32,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:52:32,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:52:32,133 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2024-12-02 11:52:37,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:38,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:42,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:44,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:47,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:52,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:54,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:56,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:52:56,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:52:56,846 INFO L93 Difference]: Finished difference Result 108 states and 136 transitions. [2024-12-02 11:52:56,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:52:56,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 106 [2024-12-02 11:52:56,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:52:56,848 INFO L225 Difference]: With dead ends: 108 [2024-12-02 11:52:56,848 INFO L226 Difference]: Without dead ends: 72 [2024-12-02 11:52:56,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:52:56,849 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 84 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 40 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:52:56,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 96 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 53 Invalid, 3 Unknown, 0 Unchecked, 24.2s Time] [2024-12-02 11:52:56,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-12-02 11:52:56,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2024-12-02 11:52:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-12-02 11:52:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2024-12-02 11:52:56,858 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 106 [2024-12-02 11:52:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:52:56,858 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2024-12-02 11:52:56,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2024-12-02 11:52:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2024-12-02 11:52:56,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 11:52:56,860 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:52:56,860 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:52:56,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-12-02 11:52:57,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:52:57,061 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:52:57,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:52:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash 173404418, now seen corresponding path program 1 times [2024-12-02 11:52:57,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:52:57,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123973779] [2024-12-02 11:52:57,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:52:57,061 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 [2024-12-02 11:52:57,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:52:57,063 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 11:52:57,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-12-02 11:52:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:52:57,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 11:52:57,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:53:21,117 WARN L286 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:53:26,559 WARN L286 SmtUtils]: Spent 5.04s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:53:34,447 WARN L286 SmtUtils]: Spent 7.79s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:53:41,238 WARN L286 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:53:47,195 WARN L286 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:53:54,920 WARN L286 SmtUtils]: Spent 7.71s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:54:01,663 WARN L286 SmtUtils]: Spent 6.73s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:54:16,245 WARN L286 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:54:23,647 WARN L286 SmtUtils]: Spent 7.39s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:54:30,321 WARN L286 SmtUtils]: Spent 6.67s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:54:37,703 WARN L286 SmtUtils]: Spent 7.38s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:54:42,737 WARN L286 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:54:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-12-02 11:54:50,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:55:36,929 WARN L286 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:55:49,243 WARN L286 SmtUtils]: Spent 6.00s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:55:55,560 WARN L286 SmtUtils]: Spent 6.30s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:56:09,747 WARN L286 SmtUtils]: Spent 7.14s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:56:15,295 WARN L286 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:56:20,461 WARN L286 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:56:26,191 WARN L286 SmtUtils]: Spent 5.68s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:56:37,087 WARN L286 SmtUtils]: Spent 6.42s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:56:43,913 WARN L286 SmtUtils]: Spent 6.82s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:56:59,397 WARN L286 SmtUtils]: Spent 6.98s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:57:04,481 WARN L286 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:57:15,434 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse16 ((_ zero_extend 24) c_~var_1_7~0)) (.cse13 ((_ sign_extend 16) c_~last_1_var_1_13~0)) (.cse12 (= ((_ zero_extend 16) c_~var_1_1~0) ((_ zero_extend 16) c_~last_1_var_1_13~0)))) (let ((.cse17 (= (_ bv0 8) c_~var_1_12~0)) (.cse1 (forall ((~var_1_15~0 (_ FloatingPoint 8 24)) (~var_1_14~0 (_ FloatingPoint 8 24)) (currentRoundingMode RoundingMode)) (fp.geq ((_ to_fp 11 53) currentRoundingMode (fp.sub currentRoundingMode ~var_1_14~0 ~var_1_15~0)) (fp.add currentRoundingMode (fp.add currentRoundingMode c_~var_1_8~0 c_~var_1_10~0) c_~var_1_9~0)))) (.cse3 (forall ((~var_1_15~0 (_ FloatingPoint 8 24)) (~var_1_14~0 (_ FloatingPoint 8 24)) (currentRoundingMode RoundingMode)) (not (fp.geq ((_ to_fp 11 53) currentRoundingMode (fp.sub currentRoundingMode ~var_1_14~0 ~var_1_15~0)) (fp.add currentRoundingMode (fp.add currentRoundingMode c_~var_1_8~0 c_~var_1_10~0) c_~var_1_9~0))))) (.cse15 (or (not (bvslt .cse13 (bvadd .cse13 (bvneg .cse13)))) .cse12)) (.cse6 (or .cse12 (bvslt (bvmul .cse13 (_ bv2 32)) (bvmul .cse13 .cse13)))) (.cse5 (= (_ bv0 32) .cse16)) (.cse4 (= ((_ sign_extend 16) c_~var_1_13~0) ((_ sign_extend 16) c_~var_1_1~0)))) (and (or (let ((.cse9 (fp.lt c_~var_1_8~0 c_~var_1_9~0))) (let ((.cse0 (= ((_ zero_extend 24) c_~var_1_12~0) .cse16)) (.cse10 (fp.leq c_~var_1_8~0 c_~var_1_10~0)) (.cse11 (not .cse9)) (.cse7 (fp.leq c_~var_1_9~0 c_~var_1_10~0))) (and (or .cse0 (let ((.cse2 (let ((.cse8 (or .cse12 (not (bvslt .cse13 (_ bv0 32)))))) (and (or (and .cse5 .cse6 .cse7 .cse8) .cse9) (or (and .cse5 .cse6 .cse10 .cse8) .cse11))))) (and (or .cse1 .cse2) (or .cse3 .cse2) .cse4))) (or (not .cse0) (let ((.cse14 (and .cse15 .cse6 (or (not .cse10) .cse11) (not .cse7)))) (and (or .cse1 .cse14) (or .cse3 .cse14) .cse4)))))) .cse17) (or (not .cse17) (let ((.cse19 (not .cse4))) (and (or .cse5 (let ((.cse18 (and .cse1 .cse3))) (and (or .cse18 .cse4) (or .cse19 .cse18)))) (or (let ((.cse20 (let ((.cse21 (and .cse15 .cse6))) (and (or .cse21 .cse1) (or .cse21 .cse3))))) (and (or .cse20 .cse4) (or .cse19 .cse20))) (not .cse5)))))))) is different from true [2024-12-02 11:57:21,145 WARN L286 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:57:36,570 WARN L286 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:57:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 364 trivial. 1 not checked. [2024-12-02 11:57:48,149 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:57:48,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123973779] [2024-12-02 11:57:48,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123973779] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:57:48,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:57:48,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2024-12-02 11:57:48,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605676689] [2024-12-02 11:57:48,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:57:48,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 11:57:48,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:57:48,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 11:57:48,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=137, Unknown=1, NotChecked=24, Total=210 [2024-12-02 11:57:48,152 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2024-12-02 11:57:52,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:57:55,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:58:00,103 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse16 ((_ zero_extend 24) c_~var_1_7~0)) (.cse13 ((_ sign_extend 16) c_~last_1_var_1_13~0)) (.cse12 (= ((_ zero_extend 16) c_~var_1_1~0) ((_ zero_extend 16) c_~last_1_var_1_13~0)))) (let ((.cse17 (= (_ bv0 8) c_~var_1_12~0)) (.cse1 (forall ((~var_1_15~0 (_ FloatingPoint 8 24)) (~var_1_14~0 (_ FloatingPoint 8 24)) (currentRoundingMode RoundingMode)) (fp.geq ((_ to_fp 11 53) currentRoundingMode (fp.sub currentRoundingMode ~var_1_14~0 ~var_1_15~0)) (fp.add currentRoundingMode (fp.add currentRoundingMode c_~var_1_8~0 c_~var_1_10~0) c_~var_1_9~0)))) (.cse3 (forall ((~var_1_15~0 (_ FloatingPoint 8 24)) (~var_1_14~0 (_ FloatingPoint 8 24)) (currentRoundingMode RoundingMode)) (not (fp.geq ((_ to_fp 11 53) currentRoundingMode (fp.sub currentRoundingMode ~var_1_14~0 ~var_1_15~0)) (fp.add currentRoundingMode (fp.add currentRoundingMode c_~var_1_8~0 c_~var_1_10~0) c_~var_1_9~0))))) (.cse15 (or (not (bvslt .cse13 (bvadd .cse13 (bvneg .cse13)))) .cse12)) (.cse6 (or .cse12 (bvslt (bvmul .cse13 (_ bv2 32)) (bvmul .cse13 .cse13)))) (.cse5 (= (_ bv0 32) .cse16)) (.cse4 (= ((_ sign_extend 16) c_~var_1_13~0) ((_ sign_extend 16) c_~var_1_1~0)))) (and (or (let ((.cse9 (fp.lt c_~var_1_8~0 c_~var_1_9~0))) (let ((.cse0 (= ((_ zero_extend 24) c_~var_1_12~0) .cse16)) (.cse10 (fp.leq c_~var_1_8~0 c_~var_1_10~0)) (.cse11 (not .cse9)) (.cse7 (fp.leq c_~var_1_9~0 c_~var_1_10~0))) (and (or .cse0 (let ((.cse2 (let ((.cse8 (or .cse12 (not (bvslt .cse13 (_ bv0 32)))))) (and (or (and .cse5 .cse6 .cse7 .cse8) .cse9) (or (and .cse5 .cse6 .cse10 .cse8) .cse11))))) (and (or .cse1 .cse2) (or .cse3 .cse2) .cse4))) (or (not .cse0) (let ((.cse14 (and .cse15 .cse6 (or (not .cse10) .cse11) (not .cse7)))) (and (or .cse1 .cse14) (or .cse3 .cse14) .cse4)))))) .cse17) .cse15 .cse6 (or (not .cse17) (let ((.cse19 (not .cse4))) (and (or .cse5 (let ((.cse18 (and .cse1 .cse3))) (and (or .cse18 .cse4) (or .cse19 .cse18)))) (or (let ((.cse20 (let ((.cse21 (and .cse15 .cse6))) (and (or .cse21 .cse1) (or .cse21 .cse3))))) (and (or .cse20 .cse4) (or .cse19 .cse20))) (not .cse5))))) (= c_~var_1_1~0 (_ bv32 16)) (= c_~var_1_13~0 (_ bv32 16)) .cse4))) is different from true [2024-12-02 11:58:04,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:58:09,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:58:13,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:58:15,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:58:20,043 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse9 (fp.lt c_~var_1_8~0 c_~var_1_9~0))) (let ((.cse7 (fp.leq c_~var_1_9~0 c_~var_1_10~0)) (.cse18 ((_ zero_extend 24) c_~var_1_7~0)) (.cse13 ((_ sign_extend 16) c_~last_1_var_1_13~0)) (.cse12 (= ((_ zero_extend 16) c_~var_1_1~0) ((_ zero_extend 16) c_~last_1_var_1_13~0))) (.cse10 (fp.leq c_~var_1_8~0 c_~var_1_10~0)) (.cse11 (not .cse9))) (let ((.cse16 (or (not .cse10) .cse11)) (.cse19 (= (_ bv0 8) c_~var_1_12~0)) (.cse1 (forall ((~var_1_15~0 (_ FloatingPoint 8 24)) (~var_1_14~0 (_ FloatingPoint 8 24)) (currentRoundingMode RoundingMode)) (fp.geq ((_ to_fp 11 53) currentRoundingMode (fp.sub currentRoundingMode ~var_1_14~0 ~var_1_15~0)) (fp.add currentRoundingMode (fp.add currentRoundingMode c_~var_1_8~0 c_~var_1_10~0) c_~var_1_9~0)))) (.cse3 (forall ((~var_1_15~0 (_ FloatingPoint 8 24)) (~var_1_14~0 (_ FloatingPoint 8 24)) (currentRoundingMode RoundingMode)) (not (fp.geq ((_ to_fp 11 53) currentRoundingMode (fp.sub currentRoundingMode ~var_1_14~0 ~var_1_15~0)) (fp.add currentRoundingMode (fp.add currentRoundingMode c_~var_1_8~0 c_~var_1_10~0) c_~var_1_9~0))))) (.cse15 (or (not (bvslt .cse13 (bvadd .cse13 (bvneg .cse13)))) .cse12)) (.cse6 (or .cse12 (bvslt (bvmul .cse13 (_ bv2 32)) (bvmul .cse13 .cse13)))) (.cse5 (= (_ bv0 32) .cse18)) (.cse4 (= ((_ sign_extend 16) c_~var_1_13~0) ((_ sign_extend 16) c_~var_1_1~0))) (.cse17 (not .cse7))) (and (= c_~var_1_12~0 c_~var_1_7~0) (= c_~last_1_var_1_13~0 (_ bv32 16)) (or (let ((.cse0 (= ((_ zero_extend 24) c_~var_1_12~0) .cse18))) (and (or .cse0 (let ((.cse2 (let ((.cse8 (or .cse12 (not (bvslt .cse13 (_ bv0 32)))))) (and (or (and .cse5 .cse6 .cse7 .cse8) .cse9) (or (and .cse5 .cse6 .cse10 .cse8) .cse11))))) (and (or .cse1 .cse2) (or .cse3 .cse2) .cse4))) (or (not .cse0) (let ((.cse14 (and .cse15 .cse6 .cse16 .cse17))) (and (or .cse1 .cse14) (or .cse3 .cse14) .cse4))))) .cse19) .cse16 (or (not .cse19) (let ((.cse21 (not .cse4))) (and (or .cse5 (let ((.cse20 (and .cse1 .cse3))) (and (or .cse20 .cse4) (or .cse21 .cse20)))) (or (let ((.cse22 (let ((.cse23 (and .cse15 .cse6))) (and (or .cse23 .cse1) (or .cse23 .cse3))))) (and (or .cse22 .cse4) (or .cse21 .cse22))) (not .cse5))))) (= c_~var_1_1~0 (_ bv32 16)) .cse17 (= c_~var_1_13~0 (_ bv32 16)))))) is different from true [2024-12-02 11:58:23,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:58:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:58:24,387 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2024-12-02 11:58:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:58:24,388 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 107 [2024-12-02 11:58:24,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:58:24,389 INFO L225 Difference]: With dead ends: 82 [2024-12-02 11:58:24,389 INFO L226 Difference]: Without dead ends: 80 [2024-12-02 11:58:24,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=97, Invalid=292, Unknown=3, NotChecked=114, Total=506 [2024-12-02 11:58:24,390 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 110 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 56 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:58:24,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 316 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 195 Invalid, 2 Unknown, 106 Unchecked, 27.0s Time] [2024-12-02 11:58:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-02 11:58:24,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2024-12-02 11:58:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-12-02 11:58:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2024-12-02 11:58:24,404 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 107 [2024-12-02 11:58:24,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:58:24,404 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2024-12-02 11:58:24,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2024-12-02 11:58:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2024-12-02 11:58:24,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 11:58:24,406 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:58:24,407 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:58:24,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-12-02 11:58:24,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 11:58:24,607 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:58:24,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:58:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash 845009359, now seen corresponding path program 1 times [2024-12-02 11:58:24,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:58:24,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66612099] [2024-12-02 11:58:24,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:58:24,608 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 [2024-12-02 11:58:24,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:58:24,610 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 11:58:24,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b606211-ce53-4bb6-99e2-f3c0f0fef755/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-12-02 11:58:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:58:25,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 11:58:25,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:58:47,725 WARN L286 SmtUtils]: Spent 6.33s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:58:54,167 WARN L286 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:59:01,479 WARN L286 SmtUtils]: Spent 6.91s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:59:09,292 WARN L286 SmtUtils]: Spent 7.13s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:59:16,205 WARN L286 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:59:24,057 WARN L286 SmtUtils]: Spent 7.83s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:59:30,147 WARN L286 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:59:35,789 WARN L286 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:59:47,864 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:59:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-12-02 11:59:54,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:00:21,832 WARN L286 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)