./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c --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_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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_fa21cb36-afb9-438b-b666-cd7feb64c994/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 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:20:04,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:20:04,665 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:20:04,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:20:04,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:20:04,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:20:04,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:20:04,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:20:04,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:20:04,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:20:04,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:20:04,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:20:04,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:20:04,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:20:04,693 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:20:04,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:20:04,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:20:04,694 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:20:04,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:20:04,695 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:20:04,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:20:04,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:20:04,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:20:04,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:20:04,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:20:04,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:20:04,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:20:04,696 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_fa21cb36-afb9-438b-b666-cd7feb64c994/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 -> 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 [2024-12-02 11:20:04,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:20:04,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:20:04,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:20:04,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:20:04,939 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:20:04,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2024-12-02 11:20:07,590 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/data/40ffdb08e/b7c946ce029c480fb24572649a176445/FLAG897876f1a [2024-12-02 11:20:07,801 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:20:07,802 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2024-12-02 11:20:07,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/data/40ffdb08e/b7c946ce029c480fb24572649a176445/FLAG897876f1a [2024-12-02 11:20:07,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/data/40ffdb08e/b7c946ce029c480fb24572649a176445 [2024-12-02 11:20:07,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:20:07,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:20:07,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:20:07,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:20:07,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:20:07,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:20:07" (1/1) ... [2024-12-02 11:20:07,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a94514c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:07, skipping insertion in model container [2024-12-02 11:20:07,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:20:07" (1/1) ... [2024-12-02 11:20:07,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:20:08,000 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_fa21cb36-afb9-438b-b666-cd7feb64c994/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2024-12-02 11:20:08,005 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_fa21cb36-afb9-438b-b666-cd7feb64c994/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2024-12-02 11:20:08,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:20:08,059 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:20:08,072 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_fa21cb36-afb9-438b-b666-cd7feb64c994/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2024-12-02 11:20:08,073 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_fa21cb36-afb9-438b-b666-cd7feb64c994/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2024-12-02 11:20:08,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:20:08,114 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:20:08,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08 WrapperNode [2024-12-02 11:20:08,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:20:08,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:20:08,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:20:08,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:20:08,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,151 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 210 [2024-12-02 11:20:08,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:20:08,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:20:08,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:20:08,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:20:08,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,176 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 11:20:08,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,182 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:20:08,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:20:08,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:20:08,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:20:08,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (1/1) ... [2024-12-02 11:20:08,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:20:08,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:20:08,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:20:08,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:20:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:20:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-12-02 11:20:08,251 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-12-02 11:20:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:20:08,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:20:08,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:20:08,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 11:20:08,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 11:20:08,313 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:20:08,314 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:20:08,655 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-12-02 11:20:08,655 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:20:08,665 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:20:08,666 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 11:20:08,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:20:08 BoogieIcfgContainer [2024-12-02 11:20:08,666 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:20:08,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:20:08,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:20:08,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:20:08,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:20:07" (1/3) ... [2024-12-02 11:20:08,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4313bc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:20:08, skipping insertion in model container [2024-12-02 11:20:08,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:08" (2/3) ... [2024-12-02 11:20:08,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4313bc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:20:08, skipping insertion in model container [2024-12-02 11:20:08,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:20:08" (3/3) ... [2024-12-02 11:20:08,676 INFO L128 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-3a.c.cil.c [2024-12-02 11:20:08,688 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:20:08,689 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_5+soft_float_1-3a.c.cil.c that has 3 procedures, 103 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 11:20:08,735 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:20:08,745 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;@425763ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:20:08,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 11:20:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 89 states have (on average 1.5842696629213484) internal successors, (141), 93 states have internal predecessors, (141), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 11:20:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 11:20:08,752 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:20:08,753 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:20:08,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:20:08,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:20:08,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1530844763, now seen corresponding path program 1 times [2024-12-02 11:20:08,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:20:08,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506060968] [2024-12-02 11:20:08,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:08,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:20:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:20:08,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:20:08,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506060968] [2024-12-02 11:20:08,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506060968] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:20:08,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:20:08,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:20:08,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533608602] [2024-12-02 11:20:08,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:20:08,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:20:08,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:20:08,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:20:08,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:20:08,898 INFO L87 Difference]: Start difference. First operand has 103 states, 89 states have (on average 1.5842696629213484) internal successors, (141), 93 states have internal predecessors, (141), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:20:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:20:08,924 INFO L93 Difference]: Finished difference Result 201 states and 319 transitions. [2024-12-02 11:20:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:20:08,926 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-12-02 11:20:08,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:20:08,932 INFO L225 Difference]: With dead ends: 201 [2024-12-02 11:20:08,932 INFO L226 Difference]: Without dead ends: 96 [2024-12-02 11:20:08,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:20:08,937 INFO L435 NwaCegarLoop]: 150 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, 150 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 11:20:08,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:20:08,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-12-02 11:20:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-12-02 11:20:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 83 states have (on average 1.4939759036144578) internal successors, (124), 86 states have internal predecessors, (124), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 11:20:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 141 transitions. [2024-12-02 11:20:08,968 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 141 transitions. Word has length 7 [2024-12-02 11:20:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:20:08,969 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 141 transitions. [2024-12-02 11:20:08,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:20:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 141 transitions. [2024-12-02 11:20:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 11:20:08,969 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:20:08,970 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:20:08,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:20:08,970 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:20:08,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:20:08,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1530904345, now seen corresponding path program 1 times [2024-12-02 11:20:08,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:20:08,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149830534] [2024-12-02 11:20:08,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:08,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:20:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:20:08,986 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:20:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:20:09,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 11:20:09,008 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 11:20:09,010 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-12-02 11:20:09,011 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-12-02 11:20:09,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:20:09,014 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 11:20:09,025 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 11:20:09,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:20:09 BoogieIcfgContainer [2024-12-02 11:20:09,028 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 11:20:09,029 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 11:20:09,029 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 11:20:09,029 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 11:20:09,030 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:20:08" (3/4) ... [2024-12-02 11:20:09,032 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 11:20:09,033 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 11:20:09,034 INFO L158 Benchmark]: Toolchain (without parser) took 1205.33ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 80.6MB in the end (delta: 12.0MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2024-12-02 11:20:09,034 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 73.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:20:09,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.96ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 77.6MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 11:20:09,035 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.87ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 75.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:20:09,035 INFO L158 Benchmark]: Boogie Preprocessor took 40.81ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 73.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:20:09,035 INFO L158 Benchmark]: RCFGBuilder took 473.26ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 50.2MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 11:20:09,035 INFO L158 Benchmark]: TraceAbstraction took 360.07ms. Allocated memory is still 117.4MB. Free memory was 49.6MB in the beginning and 81.1MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:20:09,036 INFO L158 Benchmark]: Witness Printer took 3.93ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 80.6MB in the end (delta: 547.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:20:09,037 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 73.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.96ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 77.6MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.87ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 75.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.81ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 73.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 473.26ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 50.2MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 360.07ms. Allocated memory is still 117.4MB. Free memory was 49.6MB in the beginning and 81.1MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.93ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 80.6MB in the end (delta: 547.3kB). 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: 48]: 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 47, overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L402] COND TRUE __VERIFIER_nondet_int() [L403] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) [L48] reach_error() - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 103 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 150 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 150 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 11:20:09,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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_fa21cb36-afb9-438b-b666-cd7feb64c994/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 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:20:10,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:20:11,057 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 11:20:11,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:20:11,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:20:11,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:20:11,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:20:11,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:20:11,087 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:20:11,087 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:20:11,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:20:11,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:20:11,087 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:20:11,087 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:20:11,087 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:20:11,088 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:20:11,088 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:20:11,088 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:20:11,088 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:20:11,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:20:11,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:20:11,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:20:11,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:20:11,089 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 11:20:11,089 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 11:20:11,089 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 11:20:11,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:20:11,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:20:11,089 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:20:11,089 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:20:11,089 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:20:11,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:20:11,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:20:11,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:20:11,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:20:11,090 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:20:11,090 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:20:11,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:20:11,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:20:11,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:20:11,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:20:11,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:20:11,090 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:20:11,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:20:11,091 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 11:20:11,091 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 11:20:11,091 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:20:11,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:20:11,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:20:11,091 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:20:11,091 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_fa21cb36-afb9-438b-b666-cd7feb64c994/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 -> 6db80c50f6c3923c66cb027dfda5b1b6c51388d665fc6094a25deaee220bcef4 [2024-12-02 11:20:11,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:20:11,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:20:11,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:20:11,328 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:20:11,329 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:20:11,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2024-12-02 11:20:14,043 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/data/6d46955dd/ceeb321715724f399fc20514f6da08e2/FLAGcd97a54cf [2024-12-02 11:20:14,253 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:20:14,254 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c [2024-12-02 11:20:14,263 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/data/6d46955dd/ceeb321715724f399fc20514f6da08e2/FLAGcd97a54cf [2024-12-02 11:20:14,277 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/data/6d46955dd/ceeb321715724f399fc20514f6da08e2 [2024-12-02 11:20:14,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:20:14,281 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:20:14,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:20:14,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:20:14,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:20:14,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699be900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14, skipping insertion in model container [2024-12-02 11:20:14,289 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,309 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:20:14,451 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_fa21cb36-afb9-438b-b666-cd7feb64c994/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2024-12-02 11:20:14,457 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_fa21cb36-afb9-438b-b666-cd7feb64c994/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2024-12-02 11:20:14,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:20:14,513 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:20:14,525 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_fa21cb36-afb9-438b-b666-cd7feb64c994/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[1998,2011] [2024-12-02 11:20:14,526 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_fa21cb36-afb9-438b-b666-cd7feb64c994/sv-benchmarks/c/combinations/square_5+soft_float_1-3a.c.cil.c[2367,2380] [2024-12-02 11:20:14,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:20:14,569 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:20:14,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14 WrapperNode [2024-12-02 11:20:14,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:20:14,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:20:14,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:20:14,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:20:14,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,584 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,605 INFO L138 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 167 [2024-12-02 11:20:14,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:20:14,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:20:14,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:20:14,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:20:14,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,615 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,627 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 11:20:14,627 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,627 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,635 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,641 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:20:14,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:20:14,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:20:14,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:20:14,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (1/1) ... [2024-12-02 11:20:14,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:20:14,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:20:14,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:20:14,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:20:14,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:20:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 11:20:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-12-02 11:20:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-12-02 11:20:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:20:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:20:14,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 11:20:14,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 11:20:14,778 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:20:14,780 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:20:19,360 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-12-02 11:20:19,360 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:20:19,369 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:20:19,369 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 11:20:19,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:20:19 BoogieIcfgContainer [2024-12-02 11:20:19,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:20:19,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:20:19,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:20:19,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:20:19,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:20:14" (1/3) ... [2024-12-02 11:20:19,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd9657f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:20:19, skipping insertion in model container [2024-12-02 11:20:19,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:20:14" (2/3) ... [2024-12-02 11:20:19,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd9657f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:20:19, skipping insertion in model container [2024-12-02 11:20:19,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:20:19" (3/3) ... [2024-12-02 11:20:19,380 INFO L128 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_1-3a.c.cil.c [2024-12-02 11:20:19,392 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:20:19,393 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_5+soft_float_1-3a.c.cil.c that has 3 procedures, 79 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 11:20:19,432 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:20:19,443 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;@3c698795, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:20:19,443 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 11:20:19,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 65 states have (on average 1.6) internal successors, (104), 69 states have internal predecessors, (104), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-12-02 11:20:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 11:20:19,453 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:20:19,454 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:20:19,454 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:20:19,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:20:19,459 INFO L85 PathProgramCache]: Analyzing trace with hash 78502818, now seen corresponding path program 1 times [2024-12-02 11:20:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:20:19,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448293454] [2024-12-02 11:20:19,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:19,469 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 11:20:19,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:20:19,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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 11:20:19,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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 11:20:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:19,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:20:19,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:20:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:20:19,928 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:20:19,928 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:20:19,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448293454] [2024-12-02 11:20:19,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448293454] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:20:19,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:20:19,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:20:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62210030] [2024-12-02 11:20:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:20:19,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:20:19,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:20:19,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:20:19,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:20:19,949 INFO L87 Difference]: Start difference. First operand has 79 states, 65 states have (on average 1.6) internal successors, (104), 69 states have internal predecessors, (104), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:20:19,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:20:19,969 INFO L93 Difference]: Finished difference Result 153 states and 245 transitions. [2024-12-02 11:20:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:20:19,971 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-12-02 11:20:19,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:20:19,977 INFO L225 Difference]: With dead ends: 153 [2024-12-02 11:20:19,977 INFO L226 Difference]: Without dead ends: 72 [2024-12-02 11:20:19,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 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 11:20:19,982 INFO L435 NwaCegarLoop]: 115 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, 115 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 11:20:19,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:20:19,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-12-02 11:20:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-12-02 11:20:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 62 states have internal predecessors, (89), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 11:20:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 106 transitions. [2024-12-02 11:20:20,017 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 106 transitions. Word has length 7 [2024-12-02 11:20:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:20:20,017 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 106 transitions. [2024-12-02 11:20:20,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:20:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 106 transitions. [2024-12-02 11:20:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 11:20:20,018 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:20:20,018 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:20:20,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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 11:20:20,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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 11:20:20,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:20:20,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:20:20,219 INFO L85 PathProgramCache]: Analyzing trace with hash 78562400, now seen corresponding path program 1 times [2024-12-02 11:20:20,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:20:20,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947142293] [2024-12-02 11:20:20,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:20,220 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 11:20:20,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 11:20:20,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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 11:20:20,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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 11:32:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:32:25,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 11:32:25,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:32:34,416 WARN L286 SmtUtils]: Spent 8.20s 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 11:32:42,517 WARN L286 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:32:50,694 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:32:54,753 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-12-02 11:33:11,076 WARN L286 SmtUtils]: Spent 8.20s 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 11:33:19,263 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:33:27,362 WARN L286 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:33:39,590 WARN L286 SmtUtils]: Spent 8.18s 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 11:33:47,799 WARN L286 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:33:55,904 WARN L286 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 11:33:59,991 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 2797.0 2000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false [2024-12-02 11:34:04,030 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 2797.0 2000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true [2024-12-02 11:34:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:34:04,030 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:04,030 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:04,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947142293] [2024-12-02 11:34:04,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947142293] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:04,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:04,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:34:04,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670867601] [2024-12-02 11:34:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:04,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:34:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:04,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:34:04,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-12-02 11:34:04,032 INFO L87 Difference]: Start difference. First operand 72 states and 106 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:34:08,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:34:12,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:34:16,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 11:34:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:16,691 INFO L93 Difference]: Finished difference Result 72 states and 106 transitions. [2024-12-02 11:34:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:34:16,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-12-02 11:34:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:16,694 INFO L225 Difference]: With dead ends: 72 [2024-12-02 11:34:16,694 INFO L226 Difference]: Without dead ends: 67 [2024-12-02 11:34:16,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-12-02 11:34:16,695 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 100 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:16,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 267 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 3 Unknown, 212 Unchecked, 12.6s Time] [2024-12-02 11:34:16,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-12-02 11:34:16,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-12-02 11:34:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 57 states have internal predecessors, (84), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 11:34:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 101 transitions. [2024-12-02 11:34:16,702 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 101 transitions. Word has length 7 [2024-12-02 11:34:16,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:16,702 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 101 transitions. [2024-12-02 11:34:16,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:34:16,702 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 101 transitions. [2024-12-02 11:34:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-02 11:34:16,703 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:16,703 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:34:16,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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)] Forceful destruction successful, exit code 0 [2024-12-02 11:34:16,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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 11:34:16,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:16,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1378056105, now seen corresponding path program 1 times [2024-12-02 11:34:16,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:16,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775259069] [2024-12-02 11:34:16,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:16,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:16,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:16,906 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:16,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:34:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:16,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:34:16,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:34:17,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:34:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:34:18,040 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:18,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775259069] [2024-12-02 11:34:18,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775259069] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:34:18,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:34:18,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-12-02 11:34:18,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586795659] [2024-12-02 11:34:18,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:34:18,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:34:18,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:18,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:34:18,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:34:18,042 INFO L87 Difference]: Start difference. First operand 67 states and 101 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:19,399 INFO L93 Difference]: Finished difference Result 144 states and 224 transitions. [2024-12-02 11:34:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:34:19,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-12-02 11:34:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:19,401 INFO L225 Difference]: With dead ends: 144 [2024-12-02 11:34:19,401 INFO L226 Difference]: Without dead ends: 99 [2024-12-02 11:34:19,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:34:19,402 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 31 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:19,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 590 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 11:34:19,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-12-02 11:34:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2024-12-02 11:34:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 84 states have internal predecessors, (120), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2024-12-02 11:34:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 147 transitions. [2024-12-02 11:34:19,411 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 147 transitions. Word has length 33 [2024-12-02 11:34:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:19,411 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 147 transitions. [2024-12-02 11:34:19,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 147 transitions. [2024-12-02 11:34:19,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 11:34:19,412 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:19,412 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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 11:34:19,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:34:19,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:19,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:19,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash 235274101, now seen corresponding path program 1 times [2024-12-02 11:34:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:19,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649694576] [2024-12-02 11:34:19,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:19,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:19,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:19,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:19,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:34:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:19,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:34:19,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 11:34:20,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:34:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:34:21,447 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:21,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649694576] [2024-12-02 11:34:21,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649694576] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:34:21,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:34:21,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 12 [2024-12-02 11:34:21,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142095259] [2024-12-02 11:34:21,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:34:21,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 11:34:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:21,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 11:34:21,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:34:21,449 INFO L87 Difference]: Start difference. First operand 97 states and 147 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-12-02 11:34:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:23,963 INFO L93 Difference]: Finished difference Result 229 states and 367 transitions. [2024-12-02 11:34:23,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:34:23,964 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 36 [2024-12-02 11:34:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:23,966 INFO L225 Difference]: With dead ends: 229 [2024-12-02 11:34:23,966 INFO L226 Difference]: Without dead ends: 163 [2024-12-02 11:34:23,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:34:23,967 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 58 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:23,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1087 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 11:34:23,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-12-02 11:34:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2024-12-02 11:34:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.3883495145631068) internal successors, (143), 103 states have internal predecessors, (143), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (34), 21 states have call predecessors, (34), 16 states have call successors, (34) [2024-12-02 11:34:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 194 transitions. [2024-12-02 11:34:23,978 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 194 transitions. Word has length 36 [2024-12-02 11:34:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:23,978 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 194 transitions. [2024-12-02 11:34:23,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-12-02 11:34:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 194 transitions. [2024-12-02 11:34:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 11:34:23,979 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:23,979 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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 11:34:23,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 11:34:24,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:24,180 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:24,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:24,180 INFO L85 PathProgramCache]: Analyzing trace with hash 48320845, now seen corresponding path program 1 times [2024-12-02 11:34:24,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:24,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324363283] [2024-12-02 11:34:24,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:24,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:24,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:24,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:34:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:24,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:34:24,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 11:34:24,445 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:24,445 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:24,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324363283] [2024-12-02 11:34:24,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324363283] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:24,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:24,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:34:24,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016021726] [2024-12-02 11:34:24,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:24,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:34:24,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:24,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:34:24,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:34:24,447 INFO L87 Difference]: Start difference. First operand 125 states and 194 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:24,793 INFO L93 Difference]: Finished difference Result 239 states and 372 transitions. [2024-12-02 11:34:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:34:24,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-12-02 11:34:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:24,795 INFO L225 Difference]: With dead ends: 239 [2024-12-02 11:34:24,795 INFO L226 Difference]: Without dead ends: 118 [2024-12-02 11:34:24,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:34:24,796 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 22 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:24,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 260 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:34:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-12-02 11:34:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2024-12-02 11:34:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 89 states have (on average 1.3932584269662922) internal successors, (124), 93 states have internal predecessors, (124), 13 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (24), 14 states have call predecessors, (24), 12 states have call successors, (24) [2024-12-02 11:34:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 161 transitions. [2024-12-02 11:34:24,807 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 161 transitions. Word has length 39 [2024-12-02 11:34:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:24,807 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 161 transitions. [2024-12-02 11:34:24,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 161 transitions. [2024-12-02 11:34:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 11:34:24,808 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:24,808 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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 11:34:24,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 11:34:25,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:25,009 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:25,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:25,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1532002409, now seen corresponding path program 1 times [2024-12-02 11:34:25,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:25,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534873436] [2024-12-02 11:34:25,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:25,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:25,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:25,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:25,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 11:34:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:25,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 11:34:25,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 11:34:26,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:34:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:34:27,563 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:27,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534873436] [2024-12-02 11:34:27,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534873436] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 11:34:27,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:34:27,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14 [2024-12-02 11:34:27,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203840223] [2024-12-02 11:34:27,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:27,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:34:27,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:27,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:34:27,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-12-02 11:34:27,565 INFO L87 Difference]: Start difference. First operand 108 states and 161 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:29,216 INFO L93 Difference]: Finished difference Result 226 states and 339 transitions. [2024-12-02 11:34:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:34:29,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-12-02 11:34:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:29,219 INFO L225 Difference]: With dead ends: 226 [2024-12-02 11:34:29,219 INFO L226 Difference]: Without dead ends: 171 [2024-12-02 11:34:29,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:34:29,220 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 36 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:29,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 430 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 11:34:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-12-02 11:34:29,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 129. [2024-12-02 11:34:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 110 states have (on average 1.3454545454545455) internal successors, (148), 111 states have internal predecessors, (148), 13 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (24), 17 states have call predecessors, (24), 12 states have call successors, (24) [2024-12-02 11:34:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 185 transitions. [2024-12-02 11:34:29,237 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 185 transitions. Word has length 40 [2024-12-02 11:34:29,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:29,237 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 185 transitions. [2024-12-02 11:34:29,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:29,240 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 185 transitions. [2024-12-02 11:34:29,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 11:34:29,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:29,243 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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 11:34:29,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 11:34:29,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:29,443 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:29,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1474744107, now seen corresponding path program 1 times [2024-12-02 11:34:29,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:29,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423714609] [2024-12-02 11:34:29,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:29,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:29,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:29,446 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:29,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 11:34:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:29,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 11:34:29,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:30,078 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 11:34:30,078 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:30,079 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:30,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423714609] [2024-12-02 11:34:30,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423714609] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:30,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:30,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:34:30,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759800532] [2024-12-02 11:34:30,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:30,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:34:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:30,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:34:30,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:34:30,080 INFO L87 Difference]: Start difference. First operand 129 states and 185 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:30,932 INFO L93 Difference]: Finished difference Result 228 states and 336 transitions. [2024-12-02 11:34:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:34:30,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-12-02 11:34:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:30,935 INFO L225 Difference]: With dead ends: 228 [2024-12-02 11:34:30,935 INFO L226 Difference]: Without dead ends: 167 [2024-12-02 11:34:30,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:34:30,936 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 30 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:30,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 505 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 11:34:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-12-02 11:34:30,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2024-12-02 11:34:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 142 states have (on average 1.352112676056338) internal successors, (192), 145 states have internal predecessors, (192), 17 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (28), 21 states have call predecessors, (28), 16 states have call successors, (28) [2024-12-02 11:34:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 237 transitions. [2024-12-02 11:34:30,950 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 237 transitions. Word has length 40 [2024-12-02 11:34:30,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:30,950 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 237 transitions. [2024-12-02 11:34:30,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:30,950 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 237 transitions. [2024-12-02 11:34:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 11:34:30,952 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:30,952 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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 11:34:30,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 11:34:31,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:31,152 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:31,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1120467723, now seen corresponding path program 2 times [2024-12-02 11:34:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:31,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195725120] [2024-12-02 11:34:31,153 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:34:31,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:31,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:31,155 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:31,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 11:34:31,200 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 11:34:31,200 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:34:31,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:34:31,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 11:34:31,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:31,792 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:31,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195725120] [2024-12-02 11:34:31,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195725120] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:31,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:31,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:34:31,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618679976] [2024-12-02 11:34:31,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:31,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:34:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:31,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:34:31,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:34:31,793 INFO L87 Difference]: Start difference. First operand 165 states and 237 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:32,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:32,677 INFO L93 Difference]: Finished difference Result 283 states and 414 transitions. [2024-12-02 11:34:32,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:34:32,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2024-12-02 11:34:32,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:32,679 INFO L225 Difference]: With dead ends: 283 [2024-12-02 11:34:32,679 INFO L226 Difference]: Without dead ends: 236 [2024-12-02 11:34:32,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:34:32,684 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 46 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:32,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 715 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 11:34:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-12-02 11:34:32,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 235. [2024-12-02 11:34:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 205 states have (on average 1.3609756097560977) internal successors, (279), 207 states have internal predecessors, (279), 24 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (35), 31 states have call predecessors, (35), 23 states have call successors, (35) [2024-12-02 11:34:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 338 transitions. [2024-12-02 11:34:32,697 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 338 transitions. Word has length 43 [2024-12-02 11:34:32,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:32,697 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 338 transitions. [2024-12-02 11:34:32,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:32,698 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 338 transitions. [2024-12-02 11:34:32,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 11:34:32,698 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:32,698 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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 11:34:32,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 11:34:32,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:32,899 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:32,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:32,899 INFO L85 PathProgramCache]: Analyzing trace with hash 440409353, now seen corresponding path program 1 times [2024-12-02 11:34:32,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:32,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847954133] [2024-12-02 11:34:32,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:32,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:32,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:32,901 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:32,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 11:34:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:32,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 11:34:32,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 11:34:33,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:34:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 11:34:33,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:33,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847954133] [2024-12-02 11:34:33,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847954133] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:34:33,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:34:33,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2024-12-02 11:34:33,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127347594] [2024-12-02 11:34:33,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:34:33,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:34:33,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:33,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:34:33,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:34:33,991 INFO L87 Difference]: Start difference. First operand 235 states and 338 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:35,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:35,021 INFO L93 Difference]: Finished difference Result 408 states and 606 transitions. [2024-12-02 11:34:35,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:34:35,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-12-02 11:34:35,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:35,024 INFO L225 Difference]: With dead ends: 408 [2024-12-02 11:34:35,024 INFO L226 Difference]: Without dead ends: 326 [2024-12-02 11:34:35,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:34:35,025 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 44 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:35,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 778 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 11:34:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-12-02 11:34:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 322. [2024-12-02 11:34:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 280 states have (on average 1.3642857142857143) internal successors, (382), 285 states have internal predecessors, (382), 36 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (47), 43 states have call predecessors, (47), 35 states have call successors, (47) [2024-12-02 11:34:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 465 transitions. [2024-12-02 11:34:35,047 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 465 transitions. Word has length 43 [2024-12-02 11:34:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:35,047 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 465 transitions. [2024-12-02 11:34:35,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 465 transitions. [2024-12-02 11:34:35,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 11:34:35,048 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:35,048 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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 11:34:35,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 11:34:35,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:35,249 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:35,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:35,249 INFO L85 PathProgramCache]: Analyzing trace with hash 497667655, now seen corresponding path program 1 times [2024-12-02 11:34:35,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:35,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199213490] [2024-12-02 11:34:35,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:35,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:35,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:35,251 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:35,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 11:34:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:35,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 11:34:35,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 11:34:37,004 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:37,004 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:37,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199213490] [2024-12-02 11:34:37,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199213490] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:37,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:37,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 11:34:37,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372870203] [2024-12-02 11:34:37,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:37,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 11:34:37,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:37,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 11:34:37,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:34:37,005 INFO L87 Difference]: Start difference. First operand 322 states and 465 transitions. Second operand has 12 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:41,092 INFO L93 Difference]: Finished difference Result 355 states and 508 transitions. [2024-12-02 11:34:41,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:34:41,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-12-02 11:34:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:41,094 INFO L225 Difference]: With dead ends: 355 [2024-12-02 11:34:41,094 INFO L226 Difference]: Without dead ends: 326 [2024-12-02 11:34:41,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:34:41,095 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 73 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:41,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1414 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 11:34:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-12-02 11:34:41,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2024-12-02 11:34:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 283 states have (on average 1.3568904593639577) internal successors, (384), 288 states have internal predecessors, (384), 36 states have call successors, (36), 3 states have call predecessors, (36), 6 states have return successors, (47), 43 states have call predecessors, (47), 35 states have call successors, (47) [2024-12-02 11:34:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 467 transitions. [2024-12-02 11:34:41,108 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 467 transitions. Word has length 43 [2024-12-02 11:34:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:41,108 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 467 transitions. [2024-12-02 11:34:41,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 467 transitions. [2024-12-02 11:34:41,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 11:34:41,109 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:41,110 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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 11:34:41,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 11:34:41,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:41,310 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:41,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:41,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2096282757, now seen corresponding path program 1 times [2024-12-02 11:34:41,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:41,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448840660] [2024-12-02 11:34:41,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:41,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:41,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:41,312 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:41,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 11:34:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:41,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:34:41,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 11:34:42,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:34:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 11:34:42,716 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:42,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448840660] [2024-12-02 11:34:42,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448840660] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:34:42,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:34:42,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-12-02 11:34:42,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96810621] [2024-12-02 11:34:42,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:34:42,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:34:42,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:42,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:34:42,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:34:42,718 INFO L87 Difference]: Start difference. First operand 326 states and 467 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:43,902 INFO L93 Difference]: Finished difference Result 559 states and 827 transitions. [2024-12-02 11:34:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:34:43,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-12-02 11:34:43,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:43,906 INFO L225 Difference]: With dead ends: 559 [2024-12-02 11:34:43,906 INFO L226 Difference]: Without dead ends: 433 [2024-12-02 11:34:43,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:34:43,907 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 30 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:43,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 556 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 11:34:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-12-02 11:34:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 368. [2024-12-02 11:34:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 321 states have (on average 1.35202492211838) internal successors, (434), 328 states have internal predecessors, (434), 40 states have call successors, (40), 3 states have call predecessors, (40), 6 states have return successors, (51), 47 states have call predecessors, (51), 39 states have call successors, (51) [2024-12-02 11:34:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 525 transitions. [2024-12-02 11:34:43,930 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 525 transitions. Word has length 43 [2024-12-02 11:34:43,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:43,930 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 525 transitions. [2024-12-02 11:34:43,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 525 transitions. [2024-12-02 11:34:43,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 11:34:43,931 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:43,931 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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 11:34:43,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 11:34:44,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:44,132 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:44,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1416224387, now seen corresponding path program 1 times [2024-12-02 11:34:44,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:44,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685580583] [2024-12-02 11:34:44,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:44,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:44,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:44,134 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:44,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 11:34:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:44,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 11:34:44,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 11:34:45,291 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:34:47,237 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:47,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685580583] [2024-12-02 11:34:47,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685580583] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:34:47,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [865437980] [2024-12-02 11:34:47,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:47,238 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 11:34:47,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 11:34:47,240 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 11:34:47,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-12-02 11:34:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:47,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 11:34:47,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 11:34:47,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:34:48,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [865437980] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:34:48,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:34:48,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-12-02 11:34:48,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345761400] [2024-12-02 11:34:48,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:34:48,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 11:34:48,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:48,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 11:34:48,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:34:48,119 INFO L87 Difference]: Start difference. First operand 368 states and 525 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:50,278 INFO L93 Difference]: Finished difference Result 378 states and 534 transitions. [2024-12-02 11:34:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:34:50,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2024-12-02 11:34:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:50,279 INFO L225 Difference]: With dead ends: 378 [2024-12-02 11:34:50,280 INFO L226 Difference]: Without dead ends: 376 [2024-12-02 11:34:50,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:34:50,280 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 46 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:50,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1102 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 11:34:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-12-02 11:34:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2024-12-02 11:34:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 324 states have (on average 1.3487654320987654) internal successors, (437), 331 states have internal predecessors, (437), 40 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (51), 47 states have call predecessors, (51), 39 states have call successors, (51) [2024-12-02 11:34:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 528 transitions. [2024-12-02 11:34:50,299 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 528 transitions. Word has length 43 [2024-12-02 11:34:50,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:50,299 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 528 transitions. [2024-12-02 11:34:50,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 11:34:50,300 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 528 transitions. [2024-12-02 11:34:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 11:34:50,300 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:50,300 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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 11:34:50,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 11:34:50,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2024-12-02 11:34:50,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 11:34:50,701 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:50,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:50,701 INFO L85 PathProgramCache]: Analyzing trace with hash 298193477, now seen corresponding path program 1 times [2024-12-02 11:34:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014473240] [2024-12-02 11:34:50,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:50,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:50,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:50,703 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:50,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 11:34:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:50,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 11:34:50,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 11:34:52,056 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:52,056 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:52,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014473240] [2024-12-02 11:34:52,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014473240] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:52,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 11:34:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347505503] [2024-12-02 11:34:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:52,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:34:52,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:52,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:34:52,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:34:52,058 INFO L87 Difference]: Start difference. First operand 372 states and 528 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:54,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:54,824 INFO L93 Difference]: Finished difference Result 427 states and 603 transitions. [2024-12-02 11:34:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:34:54,825 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2024-12-02 11:34:54,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:54,827 INFO L225 Difference]: With dead ends: 427 [2024-12-02 11:34:54,827 INFO L226 Difference]: Without dead ends: 340 [2024-12-02 11:34:54,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:34:54,828 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 58 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:54,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1306 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 11:34:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-12-02 11:34:54,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 332. [2024-12-02 11:34:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 287 states have (on average 1.3414634146341464) internal successors, (385), 292 states have internal predecessors, (385), 36 states have call successors, (36), 5 states have call predecessors, (36), 8 states have return successors, (47), 43 states have call predecessors, (47), 35 states have call successors, (47) [2024-12-02 11:34:54,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 468 transitions. [2024-12-02 11:34:54,848 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 468 transitions. Word has length 43 [2024-12-02 11:34:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:54,848 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 468 transitions. [2024-12-02 11:34:54,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 468 transitions. [2024-12-02 11:34:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 11:34:54,849 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:54,849 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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 11:34:54,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 11:34:55,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:55,050 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:55,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:55,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1216750209, now seen corresponding path program 1 times [2024-12-02 11:34:55,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:55,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518624369] [2024-12-02 11:34:55,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:55,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:55,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:55,052 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:55,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 11:34:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:55,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:34:55,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 11:34:55,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:55,701 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:55,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518624369] [2024-12-02 11:34:55,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518624369] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:55,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:55,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:55,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39237154] [2024-12-02 11:34:55,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:55,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:55,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:55,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:55,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:55,702 INFO L87 Difference]: Start difference. First operand 332 states and 468 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:56,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:56,543 INFO L93 Difference]: Finished difference Result 348 states and 485 transitions. [2024-12-02 11:34:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:34:56,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2024-12-02 11:34:56,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:56,547 INFO L225 Difference]: With dead ends: 348 [2024-12-02 11:34:56,547 INFO L226 Difference]: Without dead ends: 346 [2024-12-02 11:34:56,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:34:56,548 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 3 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:56,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 479 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:34:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-12-02 11:34:56,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 338. [2024-12-02 11:34:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 291 states have (on average 1.3402061855670102) internal successors, (390), 297 states have internal predecessors, (390), 37 states have call successors, (37), 6 states have call predecessors, (37), 9 states have return successors, (48), 43 states have call predecessors, (48), 36 states have call successors, (48) [2024-12-02 11:34:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 475 transitions. [2024-12-02 11:34:56,578 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 475 transitions. Word has length 43 [2024-12-02 11:34:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:56,578 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 475 transitions. [2024-12-02 11:34:56,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 475 transitions. [2024-12-02 11:34:56,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 11:34:56,579 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:56,579 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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 11:34:56,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 11:34:56,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:56,780 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:56,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1274008511, now seen corresponding path program 1 times [2024-12-02 11:34:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:56,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5379644] [2024-12-02 11:34:56,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:56,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:56,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:56,782 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:56,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 11:34:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:56,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:34:56,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 11:34:57,339 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:57,339 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5379644] [2024-12-02 11:34:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5379644] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:57,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:34:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136213824] [2024-12-02 11:34:57,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:57,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:34:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:57,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:34:57,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:57,340 INFO L87 Difference]: Start difference. First operand 338 states and 475 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:58,023 INFO L93 Difference]: Finished difference Result 344 states and 480 transitions. [2024-12-02 11:34:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:34:58,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2024-12-02 11:34:58,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:58,025 INFO L225 Difference]: With dead ends: 344 [2024-12-02 11:34:58,025 INFO L226 Difference]: Without dead ends: 342 [2024-12-02 11:34:58,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:34:58,026 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 3 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:58,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 459 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:34:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-12-02 11:34:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2024-12-02 11:34:58,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 290 states have (on average 1.3379310344827586) internal successors, (388), 295 states have internal predecessors, (388), 36 states have call successors, (36), 6 states have call predecessors, (36), 9 states have return successors, (47), 43 states have call predecessors, (47), 35 states have call successors, (47) [2024-12-02 11:34:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 471 transitions. [2024-12-02 11:34:58,044 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 471 transitions. Word has length 43 [2024-12-02 11:34:58,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:58,044 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 471 transitions. [2024-12-02 11:34:58,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 471 transitions. [2024-12-02 11:34:58,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 11:34:58,046 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:58,046 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 11:34:58,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 11:34:58,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:58,247 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:58,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:58,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1825297549, now seen corresponding path program 1 times [2024-12-02 11:34:58,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:58,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53623802] [2024-12-02 11:34:58,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:58,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:58,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:58,249 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:58,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 11:34:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:58,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:34:58,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 11:34:58,598 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:58,598 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53623802] [2024-12-02 11:34:58,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53623802] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:58,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:58,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:34:58,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982165422] [2024-12-02 11:34:58,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:58,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:34:58,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:58,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:34:58,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:34:58,600 INFO L87 Difference]: Start difference. First operand 336 states and 471 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:58,746 INFO L93 Difference]: Finished difference Result 453 states and 648 transitions. [2024-12-02 11:34:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:34:58,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-12-02 11:34:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:58,748 INFO L225 Difference]: With dead ends: 453 [2024-12-02 11:34:58,749 INFO L226 Difference]: Without dead ends: 358 [2024-12-02 11:34:58,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:34:58,750 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 13 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:58,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 310 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:34:58,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-12-02 11:34:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2024-12-02 11:34:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 312 states have (on average 1.2980769230769231) internal successors, (405), 314 states have internal predecessors, (405), 36 states have call successors, (36), 6 states have call predecessors, (36), 9 states have return successors, (47), 43 states have call predecessors, (47), 35 states have call successors, (47) [2024-12-02 11:34:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 488 transitions. [2024-12-02 11:34:58,772 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 488 transitions. Word has length 44 [2024-12-02 11:34:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:58,773 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 488 transitions. [2024-12-02 11:34:58,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 488 transitions. [2024-12-02 11:34:58,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 11:34:58,773 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:58,774 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 11:34:58,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 11:34:58,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:58,974 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:58,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:58,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1865760906, now seen corresponding path program 1 times [2024-12-02 11:34:58,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:58,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569693389] [2024-12-02 11:34:58,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:58,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:58,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:58,977 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:58,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 11:34:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:59,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:34:59,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 11:34:59,149 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:59,149 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569693389] [2024-12-02 11:34:59,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569693389] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:59,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:59,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:34:59,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460622035] [2024-12-02 11:34:59,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:59,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:34:59,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:59,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:34:59,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:34:59,151 INFO L87 Difference]: Start difference. First operand 358 states and 488 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:59,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:59,269 INFO L93 Difference]: Finished difference Result 371 states and 503 transitions. [2024-12-02 11:34:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:34:59,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2024-12-02 11:34:59,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:59,271 INFO L225 Difference]: With dead ends: 371 [2024-12-02 11:34:59,271 INFO L226 Difference]: Without dead ends: 364 [2024-12-02 11:34:59,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:34:59,272 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:59,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 285 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:34:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-12-02 11:34:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2024-12-02 11:34:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 318 states have (on average 1.2924528301886793) internal successors, (411), 320 states have internal predecessors, (411), 36 states have call successors, (36), 6 states have call predecessors, (36), 9 states have return successors, (47), 43 states have call predecessors, (47), 35 states have call successors, (47) [2024-12-02 11:34:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 494 transitions. [2024-12-02 11:34:59,285 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 494 transitions. Word has length 45 [2024-12-02 11:34:59,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:59,286 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 494 transitions. [2024-12-02 11:34:59,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 494 transitions. [2024-12-02 11:34:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 11:34:59,287 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:34:59,287 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 11:34:59,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 11:34:59,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:59,487 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:34:59,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:34:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash -90753544, now seen corresponding path program 1 times [2024-12-02 11:34:59,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:34:59,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245614810] [2024-12-02 11:34:59,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:34:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:34:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:34:59,490 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:34:59,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 11:34:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:34:59,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:34:59,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:34:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 11:34:59,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:34:59,755 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:34:59,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245614810] [2024-12-02 11:34:59,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245614810] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:34:59,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:34:59,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:34:59,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944120977] [2024-12-02 11:34:59,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:34:59,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:34:59,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:34:59,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:34:59,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:34:59,756 INFO L87 Difference]: Start difference. First operand 364 states and 494 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:59,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:34:59,967 INFO L93 Difference]: Finished difference Result 371 states and 500 transitions. [2024-12-02 11:34:59,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:34:59,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2024-12-02 11:34:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:34:59,969 INFO L225 Difference]: With dead ends: 371 [2024-12-02 11:34:59,969 INFO L226 Difference]: Without dead ends: 364 [2024-12-02 11:34:59,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:34:59,970 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 3 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:34:59,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 378 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:34:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-12-02 11:34:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 358. [2024-12-02 11:34:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 312 states have (on average 1.2852564102564104) internal successors, (401), 314 states have internal predecessors, (401), 36 states have call successors, (36), 6 states have call predecessors, (36), 9 states have return successors, (47), 43 states have call predecessors, (47), 35 states have call successors, (47) [2024-12-02 11:34:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2024-12-02 11:34:59,998 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 45 [2024-12-02 11:34:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:34:59,998 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2024-12-02 11:34:59,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:34:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2024-12-02 11:34:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 11:34:59,999 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:35:00,000 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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 11:35:00,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 11:35:00,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:35:00,200 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:35:00,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:00,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1172209497, now seen corresponding path program 1 times [2024-12-02 11:35:00,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:35:00,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159885454] [2024-12-02 11:35:00,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:00,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:35:00,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:35:00,202 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:35:00,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 11:35:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:35:00,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:35:00,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:35:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-02 11:35:00,482 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:35:00,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:35:00,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159885454] [2024-12-02 11:35:00,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159885454] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:35:00,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:35:00,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:35:00,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46007176] [2024-12-02 11:35:00,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:35:00,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:35:00,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:35:00,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:35:00,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:35:00,484 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:35:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:35:00,611 INFO L93 Difference]: Finished difference Result 390 states and 525 transitions. [2024-12-02 11:35:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:35:00,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2024-12-02 11:35:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:35:00,613 INFO L225 Difference]: With dead ends: 390 [2024-12-02 11:35:00,613 INFO L226 Difference]: Without dead ends: 353 [2024-12-02 11:35:00,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:35:00,614 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 15 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:35:00,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:35:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-12-02 11:35:00,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 342. [2024-12-02 11:35:00,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 300 states have (on average 1.2733333333333334) internal successors, (382), 300 states have internal predecessors, (382), 32 states have call successors, (32), 6 states have call predecessors, (32), 9 states have return successors, (43), 39 states have call predecessors, (43), 31 states have call successors, (43) [2024-12-02 11:35:00,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 457 transitions. [2024-12-02 11:35:00,626 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 457 transitions. Word has length 45 [2024-12-02 11:35:00,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:35:00,627 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 457 transitions. [2024-12-02 11:35:00,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-12-02 11:35:00,627 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 457 transitions. [2024-12-02 11:35:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 11:35:00,628 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:35:00,628 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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 11:35:00,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 11:35:00,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:35:00,828 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:35:00,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:00,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1292164715, now seen corresponding path program 1 times [2024-12-02 11:35:00,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:35:00,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800297090] [2024-12-02 11:35:00,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:00,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:35:00,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:35:00,830 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:35:00,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 11:35:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:35:00,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 11:35:00,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:35:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 11:35:03,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:35:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 11:35:08,906 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 11:35:08,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800297090] [2024-12-02 11:35:08,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800297090] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:35:08,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 11:35:08,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 25 [2024-12-02 11:35:08,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641084773] [2024-12-02 11:35:08,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 11:35:08,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 11:35:08,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 11:35:08,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 11:35:08,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2024-12-02 11:35:08,908 INFO L87 Difference]: Start difference. First operand 342 states and 457 transitions. Second operand has 25 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-12-02 11:35:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:35:22,127 INFO L93 Difference]: Finished difference Result 358 states and 477 transitions. [2024-12-02 11:35:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 11:35:22,128 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 49 [2024-12-02 11:35:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:35:22,129 INFO L225 Difference]: With dead ends: 358 [2024-12-02 11:35:22,130 INFO L226 Difference]: Without dead ends: 356 [2024-12-02 11:35:22,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 11:35:22,130 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 113 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:35:22,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2132 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-12-02 11:35:22,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-12-02 11:35:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 352. [2024-12-02 11:35:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 305 states have (on average 1.2688524590163934) internal successors, (387), 307 states have internal predecessors, (387), 36 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (47), 41 states have call predecessors, (47), 35 states have call successors, (47) [2024-12-02 11:35:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 470 transitions. [2024-12-02 11:35:22,145 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 470 transitions. Word has length 49 [2024-12-02 11:35:22,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:35:22,145 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 470 transitions. [2024-12-02 11:35:22,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 20 states have internal predecessors, (52), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-12-02 11:35:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 470 transitions. [2024-12-02 11:35:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 11:35:22,146 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:35:22,146 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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 11:35:22,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 11:35:22,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:35:22,346 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:35:22,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:35:22,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1030672807, now seen corresponding path program 1 times [2024-12-02 11:35:22,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 11:35:22,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125291686] [2024-12-02 11:35:22,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:35:22,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:35:22,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:35:22,349 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:35:22,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 11:35:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:35:22,398 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:35:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:35:22,440 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-12-02 11:35:22,440 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 11:35:22,441 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-12-02 11:35:22,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-12-02 11:35:22,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 11:35:22,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:35:22,646 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:35:22,669 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 11:35:22,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:35:22 BoogieIcfgContainer [2024-12-02 11:35:22,671 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 11:35:22,672 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 11:35:22,672 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 11:35:22,672 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 11:35:22,672 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:20:19" (3/4) ... [2024-12-02 11:35:22,673 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-02 11:35:22,717 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 29. [2024-12-02 11:35:22,776 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 11:35:22,776 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 11:35:22,776 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 11:35:22,777 INFO L158 Benchmark]: Toolchain (without parser) took 908496.19ms. Allocated memory is still 92.3MB. Free memory was 68.4MB in the beginning and 56.4MB in the end (delta: 12.0MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2024-12-02 11:35:22,777 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:35:22,778 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.35ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 52.9MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 11:35:22,778 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.08ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 51.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:35:22,778 INFO L158 Benchmark]: Boogie Preprocessor took 40.83ms. Allocated memory is still 92.3MB. Free memory was 51.1MB in the beginning and 48.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:35:22,778 INFO L158 Benchmark]: RCFGBuilder took 4722.41ms. Allocated memory is still 92.3MB. Free memory was 48.8MB in the beginning and 59.1MB in the end (delta: -10.3MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2024-12-02 11:35:22,778 INFO L158 Benchmark]: TraceAbstraction took 903299.11ms. Allocated memory is still 92.3MB. Free memory was 58.5MB in the beginning and 63.0MB in the end (delta: -4.5MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2024-12-02 11:35:22,778 INFO L158 Benchmark]: Witness Printer took 104.64ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 56.4MB in the end (delta: 5.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:35:22,780 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.35ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 52.9MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.08ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 51.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.83ms. Allocated memory is still 92.3MB. Free memory was 51.1MB in the beginning and 48.8MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4722.41ms. Allocated memory is still 92.3MB. Free memory was 48.8MB in the beginning and 59.1MB in the end (delta: -10.3MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * TraceAbstraction took 903299.11ms. Allocated memory is still 92.3MB. Free memory was 58.5MB in the beginning and 63.0MB in the end (delta: -4.5MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * Witness Printer took 104.64ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 56.4MB in the end (delta: 5.9MB). 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 - CounterExampleResult [Line: 60]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L402] COND FALSE !(__VERIFIER_nondet_int()) [L405] CALL main2() [L269] unsigned int a ; [L270] unsigned int ma = __VERIFIER_nondet_uint(); [L271] signed char ea = __VERIFIER_nondet_char(); [L272] unsigned int b ; [L273] unsigned int mb = __VERIFIER_nondet_uint(); [L274] signed char eb = __VERIFIER_nondet_char(); [L275] unsigned int r_add ; [L276] unsigned int zero ; [L277] int sa ; [L278] int sb ; [L279] int tmp ; [L280] int tmp___0 ; [L281] int tmp___1 ; [L282] int tmp___2 ; [L283] int tmp___3 ; [L284] int tmp___4 ; [L285] int tmp___5 ; [L286] int tmp___6 ; [L287] int tmp___7 ; [L288] int tmp___8 ; [L289] int tmp___9 ; [L290] int __retres23 ; [L294] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L72] COND TRUE ! m [L73] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, e=0] [L294] RET, EXPR base2flt(0, 0) [L294] zero = base2flt(0, 0) [L295] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=67108864] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L72] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L102] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L107] COND TRUE e >= 127 [L108] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=67108864, __retres4=-1, m=67108864] [L123] return (__retres4); VAL [\old(e)=127, \old(m)=67108864, \result=-1, m=67108864] [L295] RET, EXPR base2flt(ma, ea) VAL [ea=127, ma=67108864, zero=0] [L295] a = base2flt(ma, ea) [L296] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=-16, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=-16, \old(m)=16777216, __retres4=1879048192] [L123] return (__retres4); VAL [\old(e)=-16, \old(m)=16777216, \result=1879048192] [L296] RET, EXPR base2flt(mb, eb) VAL [a=-1, ea=127, eb=-16, ma=67108864, mb=16777216, zero=0] [L296] b = base2flt(mb, eb) [L298] COND FALSE !(a < zero) VAL [a=-1, b=1879048192, ea=127, eb=-16, ma=67108864, mb=16777216, zero=0] [L301] COND TRUE a > zero [L302] tmp = 1 VAL [a=-1, b=1879048192, ea=127, eb=-16, ma=67108864, mb=16777216, tmp=1, zero=0] [L306] sa = tmp VAL [a=-1, b=1879048192, ea=127, eb=-16, ma=67108864, mb=16777216, sa=1, zero=0] [L308] COND FALSE !(b < zero) VAL [a=-1, b=1879048192, ea=127, eb=-16, ma=67108864, mb=16777216, sa=1, zero=0] [L311] COND TRUE b > zero [L312] tmp___0 = 1 VAL [a=-1, b=1879048192, ea=127, eb=-16, ma=67108864, mb=16777216, sa=1, tmp___0=1] [L316] sb = tmp___0 VAL [a=-1, b=1879048192, ea=127, eb=-16, ma=67108864, mb=16777216, sa=1, sb=1] [L319] CALL addflt(a, b) [L127] unsigned int res ; [L128] unsigned int ma ; [L129] unsigned int mb ; [L130] unsigned int delta ; [L131] int ea ; [L132] int eb ; [L133] unsigned int tmp ; [L134] unsigned int __retres10 ; VAL [a=-1, b=1879048192] [L137] COND FALSE !(a < b) VAL [a=-1, b=1879048192] [L144] COND FALSE !(! b) [L151] ma = a & ((1U << 24U) - 1U) [L152] ea = (int )(a >> 24U) - 128 [L153] ma = ma | (1U << 24U) [L154] mb = b & ((1U << 24U) - 1U) [L155] eb = (int )(b >> 24U) - 128 [L156] mb = mb | (1U << 24U) VAL [a=-1, ea=127, eb=-16, ma=33554431, mb=16777216] [L157] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L59] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L157] RET __VERIFIER_assert(ea >= eb) VAL [a=-1, ea=127, eb=-16, ma=33554431, mb=16777216] [L158] delta = ea - eb VAL [a=-1, delta=143, ea=127, ma=33554431, mb=16777216] [L159] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L59] COND TRUE !(cond) VAL [\old(cond)=0] [L60] reach_error() VAL [\old(cond)=0] - UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 79 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 903.2s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 47.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 785 SdHoareTripleChecker+Valid, 41.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 724 mSDsluCounter, 13445 SdHoareTripleChecker+Invalid, 40.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 212 IncrementalHoareTripleChecker+Unchecked, 11224 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3241 IncrementalHoareTripleChecker+Invalid, 3529 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 2221 mSDtfsCounter, 3241 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1096 GetRequests, 934 SyntacticMatches, 3 SemanticMatches, 159 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 33.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=372occurred in iteration=12, InterpolantAutomatonStates: 158, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 211 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 726.2s SatisfiabilityAnalysisTime, 124.3s InterpolantComputationTime, 866 NumberOfCodeBlocks, 849 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1034 ConstructedInterpolants, 10 QuantifiedInterpolants, 2807 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1529 ConjunctsInSsa, 170 ConjunctsInUnsatCore, 27 InterpolantComputations, 14 PerfectInterpolantSequences, 368/415 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 proved your program to be incorrect! [2024-12-02 11:35:22,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa21cb36-afb9-438b-b666-cd7feb64c994/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE