./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.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_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/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_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/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_02a3e197-9a20-4d72-b518-f81832a46dd5/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 f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:40:00,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:40:00,888 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:40:00,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:40:00,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:40:00,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:40:00,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:40:00,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:40:00,915 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:40:00,915 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:40:00,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:40:00,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:40:00,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:40:00,916 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:40:00,916 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:40:00,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:40:00,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:40:00,916 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:40:00,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:40:00,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:40:00,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:40:00,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:40:00,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:40:00,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:40:00,917 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:40:00,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:40:00,917 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:40:00,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:40:00,917 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:40:00,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:40:00,918 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:40:00,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:40:00,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:40:00,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:40:00,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:40:00,918 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:40:00,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:40:00,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:40:00,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:40:00,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:40:00,919 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:40:00,919 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:40:00,919 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:40:00,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:40:00,919 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:40:00,919 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:40:00,919 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:40:00,919 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:40:00,919 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_02a3e197-9a20-4d72-b518-f81832a46dd5/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 -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2024-12-02 06:40:01,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:40:01,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:40:01,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:40:01,190 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:40:01,190 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:40:01,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2024-12-02 06:40:03,968 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/data/c6c1ab080/e4069608a3f44162b300864f9c971b2e/FLAGfb47553be [2024-12-02 06:40:04,164 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:40:04,165 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2024-12-02 06:40:04,174 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/data/c6c1ab080/e4069608a3f44162b300864f9c971b2e/FLAGfb47553be [2024-12-02 06:40:04,533 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/data/c6c1ab080/e4069608a3f44162b300864f9c971b2e [2024-12-02 06:40:04,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:40:04,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:40:04,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:40:04,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:40:04,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:40:04,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ad1dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04, skipping insertion in model container [2024-12-02 06:40:04,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,554 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:40:04,662 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_02a3e197-9a20-4d72-b518-f81832a46dd5/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2024-12-02 06:40:04,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:40:04,713 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:40:04,721 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_02a3e197-9a20-4d72-b518-f81832a46dd5/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2024-12-02 06:40:04,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:40:04,761 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:40:04,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04 WrapperNode [2024-12-02 06:40:04,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:40:04,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:40:04,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:40:04,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:40:04,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,793 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 147 [2024-12-02 06:40:04,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:40:04,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:40:04,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:40:04,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:40:04,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,816 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 06:40:04,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,816 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,821 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:40:04,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:40:04,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:40:04,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:40:04,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (1/1) ... [2024-12-02 06:40:04,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:40:04,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:04,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:40:04,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:40:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:40:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:40:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-12-02 06:40:04,885 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-12-02 06:40:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:40:04,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:40:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 06:40:04,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 06:40:04,950 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:40:04,952 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:40:05,278 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2024-12-02 06:40:05,278 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:40:05,289 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:40:05,289 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 06:40:05,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:40:05 BoogieIcfgContainer [2024-12-02 06:40:05,290 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:40:05,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:40:05,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:40:05,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:40:05,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:40:04" (1/3) ... [2024-12-02 06:40:05,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688f0957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:40:05, skipping insertion in model container [2024-12-02 06:40:05,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:40:04" (2/3) ... [2024-12-02 06:40:05,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688f0957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:40:05, skipping insertion in model container [2024-12-02 06:40:05,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:40:05" (3/3) ... [2024-12-02 06:40:05,297 INFO L128 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2024-12-02 06:40:05,309 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:40:05,310 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG soft_float_5a.c.cil.c that has 3 procedures, 73 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-12-02 06:40:05,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:40:05,363 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;@10b543e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:40:05,363 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:40:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 64 states have (on average 1.5625) internal successors, (100), 66 states have internal predecessors, (100), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 06:40:05,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 06:40:05,375 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:05,375 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 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 06:40:05,376 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:05,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1753806442, now seen corresponding path program 1 times [2024-12-02 06:40:05,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:05,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412909958] [2024-12-02 06:40:05,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:05,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:40:05,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412909958] [2024-12-02 06:40:05,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412909958] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:05,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:40:05,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:40:05,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885755158] [2024-12-02 06:40:05,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:05,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:40:05,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:05,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:40:05,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:40:05,644 INFO L87 Difference]: Start difference. First operand has 73 states, 64 states have (on average 1.5625) internal successors, (100), 66 states have internal predecessors, (100), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:05,685 INFO L93 Difference]: Finished difference Result 171 states and 265 transitions. [2024-12-02 06:40:05,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:40:05,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2024-12-02 06:40:05,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:05,694 INFO L225 Difference]: With dead ends: 171 [2024-12-02 06:40:05,694 INFO L226 Difference]: Without dead ends: 67 [2024-12-02 06:40:05,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:40:05,700 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 35 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:05,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 199 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:40:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-12-02 06:40:05,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-12-02 06:40:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 60 states have (on average 1.4333333333333333) internal successors, (86), 60 states have internal predecessors, (86), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 06:40:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 95 transitions. [2024-12-02 06:40:05,734 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 95 transitions. Word has length 42 [2024-12-02 06:40:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:05,736 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 95 transitions. [2024-12-02 06:40:05,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 95 transitions. [2024-12-02 06:40:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 06:40:05,738 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:05,739 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 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 06:40:05,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:40:05,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:05,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1500770532, now seen corresponding path program 1 times [2024-12-02 06:40:05,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:05,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518060403] [2024-12-02 06:40:05,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:05,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:40:05,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:05,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518060403] [2024-12-02 06:40:05,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518060403] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:05,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:40:05,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:40:05,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731553373] [2024-12-02 06:40:05,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:05,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:40:05,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:05,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:40:05,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:40:05,880 INFO L87 Difference]: Start difference. First operand 67 states and 95 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:05,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:05,902 INFO L93 Difference]: Finished difference Result 104 states and 146 transitions. [2024-12-02 06:40:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:40:05,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2024-12-02 06:40:05,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:05,904 INFO L225 Difference]: With dead ends: 104 [2024-12-02 06:40:05,904 INFO L226 Difference]: Without dead ends: 67 [2024-12-02 06:40:05,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:40:05,905 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 35 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:05,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 277 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:40:05,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-12-02 06:40:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-12-02 06:40:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 60 states have internal predecessors, (85), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 06:40:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 94 transitions. [2024-12-02 06:40:05,913 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 94 transitions. Word has length 44 [2024-12-02 06:40:05,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:05,914 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 94 transitions. [2024-12-02 06:40:05,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 94 transitions. [2024-12-02 06:40:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 06:40:05,915 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:05,916 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 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 06:40:05,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:40:05,916 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:05,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash 913964518, now seen corresponding path program 1 times [2024-12-02 06:40:05,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:05,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691223505] [2024-12-02 06:40:05,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:05,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 06:40:06,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691223505] [2024-12-02 06:40:06,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691223505] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987201725] [2024-12-02 06:40:06,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:06,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:06,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:06,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:06,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:40:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:06,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 06:40:06,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:40:06,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:40:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987201725] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:06,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:40:06,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 06:40:06,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507873624] [2024-12-02 06:40:06,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:06,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:40:06,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:06,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:40:06,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:40:06,177 INFO L87 Difference]: Start difference. First operand 67 states and 94 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, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:06,294 INFO L93 Difference]: Finished difference Result 150 states and 216 transitions. [2024-12-02 06:40:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:40:06,295 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, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2024-12-02 06:40:06,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:06,297 INFO L225 Difference]: With dead ends: 150 [2024-12-02 06:40:06,297 INFO L226 Difference]: Without dead ends: 86 [2024-12-02 06:40:06,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:40:06,299 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 19 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:06,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 216 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:40:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-12-02 06:40:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2024-12-02 06:40:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.408450704225352) internal successors, (100), 71 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-12-02 06:40:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 111 transitions. [2024-12-02 06:40:06,309 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 111 transitions. Word has length 44 [2024-12-02 06:40:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:06,310 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 111 transitions. [2024-12-02 06:40:06,310 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, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 111 transitions. [2024-12-02 06:40:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 06:40:06,311 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:06,311 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-12-02 06:40:06,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:40:06,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:06,514 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:06,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:06,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1060087731, now seen corresponding path program 1 times [2024-12-02 06:40:06,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:06,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882731506] [2024-12-02 06:40:06,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 06:40:06,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:06,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882731506] [2024-12-02 06:40:06,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882731506] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:06,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710837491] [2024-12-02 06:40:06,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:06,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:06,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:06,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:06,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:40:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:06,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:40:06,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:40:06,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:40:06,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710837491] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:06,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:40:06,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 06:40:06,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007696701] [2024-12-02 06:40:06,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:06,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:40:06,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:06,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:40:06,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:40:06,691 INFO L87 Difference]: Start difference. First operand 79 states and 111 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:06,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:06,770 INFO L93 Difference]: Finished difference Result 165 states and 235 transitions. [2024-12-02 06:40:06,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:40:06,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2024-12-02 06:40:06,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:06,772 INFO L225 Difference]: With dead ends: 165 [2024-12-02 06:40:06,772 INFO L226 Difference]: Without dead ends: 93 [2024-12-02 06:40:06,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:40:06,773 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 14 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:06,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 233 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:40:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-12-02 06:40:06,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2024-12-02 06:40:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 75 states have internal predecessors, (104), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:40:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 117 transitions. [2024-12-02 06:40:06,783 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 117 transitions. Word has length 46 [2024-12-02 06:40:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:06,783 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 117 transitions. [2024-12-02 06:40:06,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 117 transitions. [2024-12-02 06:40:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 06:40:06,785 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:06,785 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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 06:40:06,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:40:06,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:06,986 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:06,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:06,987 INFO L85 PathProgramCache]: Analyzing trace with hash 971571092, now seen corresponding path program 1 times [2024-12-02 06:40:06,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:06,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832370445] [2024-12-02 06:40:06,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:06,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 06:40:07,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:07,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832370445] [2024-12-02 06:40:07,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832370445] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:07,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397418422] [2024-12-02 06:40:07,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:07,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:07,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:07,060 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:07,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:40:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:07,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:40:07,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:40:07,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:40:07,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397418422] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:07,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:40:07,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 06:40:07,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729463561] [2024-12-02 06:40:07,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:07,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:40:07,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:07,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:40:07,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:40:07,160 INFO L87 Difference]: Start difference. First operand 83 states and 117 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:07,221 INFO L93 Difference]: Finished difference Result 170 states and 243 transitions. [2024-12-02 06:40:07,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:40:07,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-12-02 06:40:07,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:07,223 INFO L225 Difference]: With dead ends: 170 [2024-12-02 06:40:07,223 INFO L226 Difference]: Without dead ends: 94 [2024-12-02 06:40:07,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:40:07,225 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 15 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:07,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 235 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:40:07,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-12-02 06:40:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 84. [2024-12-02 06:40:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 76 states have internal predecessors, (106), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:40:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2024-12-02 06:40:07,234 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 47 [2024-12-02 06:40:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:07,234 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2024-12-02 06:40:07,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2024-12-02 06:40:07,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 06:40:07,235 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:07,235 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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 06:40:07,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 06:40:07,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:07,436 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:07,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:07,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1021422544, now seen corresponding path program 1 times [2024-12-02 06:40:07,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:07,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334825515] [2024-12-02 06:40:07,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:07,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 06:40:07,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:07,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334825515] [2024-12-02 06:40:07,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334825515] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:07,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59360278] [2024-12-02 06:40:07,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:07,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:07,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:07,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:07,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:40:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:07,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 06:40:07,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:40:07,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 06:40:07,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59360278] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:07,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:07,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 06:40:07,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387277230] [2024-12-02 06:40:07,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:07,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 06:40:07,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:07,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 06:40:07,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:40:07,734 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:40:07,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:07,870 INFO L93 Difference]: Finished difference Result 218 states and 319 transitions. [2024-12-02 06:40:07,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:40:07,870 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2024-12-02 06:40:07,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:07,872 INFO L225 Difference]: With dead ends: 218 [2024-12-02 06:40:07,872 INFO L226 Difference]: Without dead ends: 141 [2024-12-02 06:40:07,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-12-02 06:40:07,873 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 85 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:07,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 552 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:40:07,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-12-02 06:40:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 95. [2024-12-02 06:40:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 86 states have (on average 1.4651162790697674) internal successors, (126), 87 states have internal predecessors, (126), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:40:07,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 139 transitions. [2024-12-02 06:40:07,885 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 139 transitions. Word has length 48 [2024-12-02 06:40:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:07,886 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 139 transitions. [2024-12-02 06:40:07,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:40:07,886 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 139 transitions. [2024-12-02 06:40:07,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 06:40:07,887 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:07,887 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-12-02 06:40:07,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:40:08,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 06:40:08,088 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:08,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:08,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1032113724, now seen corresponding path program 1 times [2024-12-02 06:40:08,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:08,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974163924] [2024-12-02 06:40:08,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:08,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 06:40:08,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974163924] [2024-12-02 06:40:08,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974163924] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:08,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775517954] [2024-12-02 06:40:08,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:08,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:08,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:08,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:08,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:40:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:08,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 06:40:08,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 06:40:08,287 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 06:40:08,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775517954] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:08,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:08,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-12-02 06:40:08,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503320751] [2024-12-02 06:40:08,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:08,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 06:40:08,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:08,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 06:40:08,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 06:40:08,389 INFO L87 Difference]: Start difference. First operand 95 states and 139 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:40:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:08,521 INFO L93 Difference]: Finished difference Result 231 states and 345 transitions. [2024-12-02 06:40:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:40:08,521 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 49 [2024-12-02 06:40:08,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:08,523 INFO L225 Difference]: With dead ends: 231 [2024-12-02 06:40:08,523 INFO L226 Difference]: Without dead ends: 143 [2024-12-02 06:40:08,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-12-02 06:40:08,524 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 88 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:08,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 495 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:40:08,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-12-02 06:40:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 101. [2024-12-02 06:40:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 92 states have (on average 1.5) internal successors, (138), 93 states have internal predecessors, (138), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:40:08,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 151 transitions. [2024-12-02 06:40:08,536 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 151 transitions. Word has length 49 [2024-12-02 06:40:08,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:08,536 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 151 transitions. [2024-12-02 06:40:08,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:40:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 151 transitions. [2024-12-02 06:40:08,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-12-02 06:40:08,538 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:08,538 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1] [2024-12-02 06:40:08,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:40:08,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 06:40:08,739 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:08,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:08,739 INFO L85 PathProgramCache]: Analyzing trace with hash -419297621, now seen corresponding path program 1 times [2024-12-02 06:40:08,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:08,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735711589] [2024-12-02 06:40:08,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:08,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 06:40:08,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:08,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735711589] [2024-12-02 06:40:08,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735711589] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:08,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440650115] [2024-12-02 06:40:08,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:08,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:08,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:08,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:08,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:40:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:08,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:40:08,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 06:40:08,862 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:40:08,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440650115] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:08,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:40:08,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-12-02 06:40:08,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084401043] [2024-12-02 06:40:08,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:08,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:40:08,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:08,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:40:08,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:40:08,864 INFO L87 Difference]: Start difference. First operand 101 states and 151 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:08,899 INFO L93 Difference]: Finished difference Result 204 states and 312 transitions. [2024-12-02 06:40:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:40:08,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2024-12-02 06:40:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:08,900 INFO L225 Difference]: With dead ends: 204 [2024-12-02 06:40:08,900 INFO L226 Difference]: Without dead ends: 110 [2024-12-02 06:40:08,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:40:08,901 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:08,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 169 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:40:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-12-02 06:40:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 103. [2024-12-02 06:40:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 95 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:40:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 153 transitions. [2024-12-02 06:40:08,911 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 153 transitions. Word has length 51 [2024-12-02 06:40:08,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:08,911 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 153 transitions. [2024-12-02 06:40:08,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:08,911 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 153 transitions. [2024-12-02 06:40:08,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-12-02 06:40:08,912 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:08,912 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1] [2024-12-02 06:40:08,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 06:40:09,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:09,113 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:09,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash 558746671, now seen corresponding path program 1 times [2024-12-02 06:40:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233640128] [2024-12-02 06:40:09,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 06:40:09,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233640128] [2024-12-02 06:40:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233640128] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039254169] [2024-12-02 06:40:09,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:09,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:09,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:09,165 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:09,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:40:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:09,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 06:40:09,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 06:40:09,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:40:09,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039254169] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:09,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:40:09,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2024-12-02 06:40:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42376746] [2024-12-02 06:40:09,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:09,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:40:09,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:09,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:40:09,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:40:09,235 INFO L87 Difference]: Start difference. First operand 103 states and 153 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:09,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:09,272 INFO L93 Difference]: Finished difference Result 202 states and 306 transitions. [2024-12-02 06:40:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:40:09,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 51 [2024-12-02 06:40:09,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:09,274 INFO L225 Difference]: With dead ends: 202 [2024-12-02 06:40:09,274 INFO L226 Difference]: Without dead ends: 106 [2024-12-02 06:40:09,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:40:09,275 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:09,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 167 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:40:09,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-12-02 06:40:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2024-12-02 06:40:09,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 90 states have (on average 1.4666666666666666) internal successors, (132), 91 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:40:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 145 transitions. [2024-12-02 06:40:09,283 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 145 transitions. Word has length 51 [2024-12-02 06:40:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:09,284 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 145 transitions. [2024-12-02 06:40:09,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 145 transitions. [2024-12-02 06:40:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 06:40:09,285 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:09,285 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1] [2024-12-02 06:40:09,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 06:40:09,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:09,485 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:09,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:09,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1564076929, now seen corresponding path program 1 times [2024-12-02 06:40:09,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:09,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412287155] [2024-12-02 06:40:09,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:09,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 06:40:09,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:09,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412287155] [2024-12-02 06:40:09,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412287155] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:09,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614061134] [2024-12-02 06:40:09,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:09,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:09,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:09,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:09,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:40:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:09,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 06:40:09,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 06:40:09,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 06:40:09,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614061134] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:09,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:09,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-12-02 06:40:09,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426797120] [2024-12-02 06:40:09,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:09,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 06:40:09,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:09,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 06:40:09,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-12-02 06:40:09,958 INFO L87 Difference]: Start difference. First operand 99 states and 145 transitions. Second operand has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 17 states have internal predecessors, (78), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 06:40:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:10,284 INFO L93 Difference]: Finished difference Result 217 states and 318 transitions. [2024-12-02 06:40:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:40:10,284 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 17 states have internal predecessors, (78), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 52 [2024-12-02 06:40:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:10,286 INFO L225 Difference]: With dead ends: 217 [2024-12-02 06:40:10,286 INFO L226 Difference]: Without dead ends: 125 [2024-12-02 06:40:10,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2024-12-02 06:40:10,287 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 112 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:10,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 776 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:40:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-12-02 06:40:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 97. [2024-12-02 06:40:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 88 states have (on average 1.3863636363636365) internal successors, (122), 89 states have internal predecessors, (122), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:40:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2024-12-02 06:40:10,296 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 52 [2024-12-02 06:40:10,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:10,296 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2024-12-02 06:40:10,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 17 states have internal predecessors, (78), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 06:40:10,297 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2024-12-02 06:40:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 06:40:10,297 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:10,298 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:10,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 06:40:10,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 06:40:10,498 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:10,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:10,499 INFO L85 PathProgramCache]: Analyzing trace with hash -968158903, now seen corresponding path program 1 times [2024-12-02 06:40:10,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:10,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910967244] [2024-12-02 06:40:10,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:10,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 06:40:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:10,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910967244] [2024-12-02 06:40:10,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910967244] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:10,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:40:10,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:40:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326496674] [2024-12-02 06:40:10,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:10,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:40:10,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:10,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:40:10,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:40:10,603 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:10,627 INFO L93 Difference]: Finished difference Result 103 states and 140 transitions. [2024-12-02 06:40:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:40:10,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2024-12-02 06:40:10,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:10,628 INFO L225 Difference]: With dead ends: 103 [2024-12-02 06:40:10,628 INFO L226 Difference]: Without dead ends: 92 [2024-12-02 06:40:10,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:40:10,629 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 1 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:10,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 449 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:40:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-12-02 06:40:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-12-02 06:40:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 83 states have (on average 1.3734939759036144) internal successors, (114), 84 states have internal predecessors, (114), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:40:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 127 transitions. [2024-12-02 06:40:10,637 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 127 transitions. Word has length 54 [2024-12-02 06:40:10,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:10,637 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 127 transitions. [2024-12-02 06:40:10,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 127 transitions. [2024-12-02 06:40:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 06:40:10,638 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:10,639 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:10,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:40:10,639 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:10,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:10,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1822225625, now seen corresponding path program 1 times [2024-12-02 06:40:10,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:10,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199419763] [2024-12-02 06:40:10,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:10,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 06:40:10,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:10,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199419763] [2024-12-02 06:40:10,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199419763] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:10,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714050716] [2024-12-02 06:40:10,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:10,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:10,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:10,742 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:10,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:40:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:10,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 06:40:10,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-02 06:40:10,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:40:10,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714050716] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:10,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:40:10,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 06:40:10,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206391589] [2024-12-02 06:40:10,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:10,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:40:10,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:10,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:40:10,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:40:10,863 INFO L87 Difference]: Start difference. First operand 92 states and 127 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:10,903 INFO L93 Difference]: Finished difference Result 183 states and 257 transitions. [2024-12-02 06:40:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:40:10,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2024-12-02 06:40:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:10,904 INFO L225 Difference]: With dead ends: 183 [2024-12-02 06:40:10,904 INFO L226 Difference]: Without dead ends: 98 [2024-12-02 06:40:10,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:40:10,905 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 5 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:10,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 165 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:40:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-12-02 06:40:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2024-12-02 06:40:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 83 states have (on average 1.3614457831325302) internal successors, (113), 84 states have internal predecessors, (113), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:40:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 126 transitions. [2024-12-02 06:40:10,913 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 126 transitions. Word has length 59 [2024-12-02 06:40:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:10,914 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 126 transitions. [2024-12-02 06:40:10,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 06:40:10,914 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 126 transitions. [2024-12-02 06:40:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 06:40:10,914 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:10,915 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:10,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 06:40:11,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:11,115 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:11,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1034775456, now seen corresponding path program 1 times [2024-12-02 06:40:11,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:11,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263281181] [2024-12-02 06:40:11,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:11,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 06:40:11,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263281181] [2024-12-02 06:40:11,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263281181] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:11,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:40:11,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:40:11,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216219135] [2024-12-02 06:40:11,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:11,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:40:11,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:11,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:40:11,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:40:11,277 INFO L87 Difference]: Start difference. First operand 92 states and 126 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:11,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:11,325 INFO L93 Difference]: Finished difference Result 139 states and 186 transitions. [2024-12-02 06:40:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:40:11,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2024-12-02 06:40:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:11,327 INFO L225 Difference]: With dead ends: 139 [2024-12-02 06:40:11,327 INFO L226 Difference]: Without dead ends: 98 [2024-12-02 06:40:11,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:40:11,328 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:11,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 493 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:40:11,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-12-02 06:40:11,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-12-02 06:40:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 90 states have internal predecessors, (117), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-02 06:40:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 132 transitions. [2024-12-02 06:40:11,338 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 132 transitions. Word has length 60 [2024-12-02 06:40:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:11,338 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 132 transitions. [2024-12-02 06:40:11,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 132 transitions. [2024-12-02 06:40:11,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 06:40:11,339 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:11,340 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:11,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:40:11,340 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:11,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 864126786, now seen corresponding path program 1 times [2024-12-02 06:40:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809877885] [2024-12-02 06:40:11,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 06:40:11,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:11,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809877885] [2024-12-02 06:40:11,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809877885] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:11,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922215130] [2024-12-02 06:40:11,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:11,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:11,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:11,581 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:11,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 06:40:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:11,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 06:40:11,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 06:40:11,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:40:11,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922215130] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:11,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:40:11,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2024-12-02 06:40:11,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124697137] [2024-12-02 06:40:11,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:11,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:40:11,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:11,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:40:11,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:40:11,867 INFO L87 Difference]: Start difference. First operand 98 states and 132 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:11,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:11,979 INFO L93 Difference]: Finished difference Result 146 states and 191 transitions. [2024-12-02 06:40:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 06:40:11,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2024-12-02 06:40:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:11,981 INFO L225 Difference]: With dead ends: 146 [2024-12-02 06:40:11,981 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 06:40:11,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:40:11,982 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 32 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:11,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 689 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:40:11,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 06:40:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2024-12-02 06:40:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 90 states have internal predecessors, (117), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-02 06:40:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 132 transitions. [2024-12-02 06:40:11,997 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 132 transitions. Word has length 63 [2024-12-02 06:40:11,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:11,997 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 132 transitions. [2024-12-02 06:40:11,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:11,998 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 132 transitions. [2024-12-02 06:40:11,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 06:40:11,999 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:11,999 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:12,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 06:40:12,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:12,200 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:12,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:12,200 INFO L85 PathProgramCache]: Analyzing trace with hash -894136731, now seen corresponding path program 1 times [2024-12-02 06:40:12,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:12,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78001388] [2024-12-02 06:40:12,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:12,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 06:40:12,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78001388] [2024-12-02 06:40:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78001388] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:40:12,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:40:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:40:12,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913148572] [2024-12-02 06:40:12,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:40:12,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:40:12,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:12,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:40:12,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:40:12,367 INFO L87 Difference]: Start difference. First operand 98 states and 132 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:12,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:12,435 INFO L93 Difference]: Finished difference Result 196 states and 259 transitions. [2024-12-02 06:40:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:40:12,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2024-12-02 06:40:12,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:12,437 INFO L225 Difference]: With dead ends: 196 [2024-12-02 06:40:12,437 INFO L226 Difference]: Without dead ends: 107 [2024-12-02 06:40:12,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:40:12,438 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 9 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:12,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 237 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:40:12,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-12-02 06:40:12,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2024-12-02 06:40:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 88 states have internal predecessors, (113), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-02 06:40:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 128 transitions. [2024-12-02 06:40:12,451 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 128 transitions. Word has length 68 [2024-12-02 06:40:12,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:12,451 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 128 transitions. [2024-12-02 06:40:12,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 06:40:12,451 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 128 transitions. [2024-12-02 06:40:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 06:40:12,452 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:12,452 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:12,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:40:12,453 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:12,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash -643092224, now seen corresponding path program 1 times [2024-12-02 06:40:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221874149] [2024-12-02 06:40:12,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:12,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 06:40:12,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221874149] [2024-12-02 06:40:12,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221874149] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737406034] [2024-12-02 06:40:12,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:12,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:12,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:12,706 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:12,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 06:40:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:12,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 06:40:12,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 06:40:12,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 06:40:13,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737406034] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:13,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:13,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-12-02 06:40:13,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453382793] [2024-12-02 06:40:13,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:13,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 06:40:13,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:13,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 06:40:13,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:40:13,003 INFO L87 Difference]: Start difference. First operand 96 states and 128 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 06:40:13,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:13,053 INFO L93 Difference]: Finished difference Result 142 states and 186 transitions. [2024-12-02 06:40:13,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 06:40:13,053 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2024-12-02 06:40:13,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:13,054 INFO L225 Difference]: With dead ends: 142 [2024-12-02 06:40:13,054 INFO L226 Difference]: Without dead ends: 96 [2024-12-02 06:40:13,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:40:13,055 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:13,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 743 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:40:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-12-02 06:40:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-12-02 06:40:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 85 states have (on average 1.2823529411764707) internal successors, (109), 88 states have internal predecessors, (109), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 06:40:13,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2024-12-02 06:40:13,064 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 68 [2024-12-02 06:40:13,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:13,064 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2024-12-02 06:40:13,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 06:40:13,065 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2024-12-02 06:40:13,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 06:40:13,065 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:13,065 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:13,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 06:40:13,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:13,266 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:13,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:13,266 INFO L85 PathProgramCache]: Analyzing trace with hash 223131376, now seen corresponding path program 1 times [2024-12-02 06:40:13,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:13,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592633577] [2024-12-02 06:40:13,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 06:40:13,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:13,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592633577] [2024-12-02 06:40:13,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592633577] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:13,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333342300] [2024-12-02 06:40:13,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:13,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:13,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:13,412 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:13,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 06:40:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:13,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 06:40:13,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 06:40:13,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 06:40:13,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333342300] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:13,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:13,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 17 [2024-12-02 06:40:13,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853576800] [2024-12-02 06:40:13,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:13,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 06:40:13,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:13,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 06:40:13,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:40:13,748 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 15 states have internal predecessors, (82), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-12-02 06:40:14,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:14,100 INFO L93 Difference]: Finished difference Result 216 states and 276 transitions. [2024-12-02 06:40:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 06:40:14,101 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 15 states have internal predecessors, (82), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 71 [2024-12-02 06:40:14,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:14,102 INFO L225 Difference]: With dead ends: 216 [2024-12-02 06:40:14,102 INFO L226 Difference]: Without dead ends: 127 [2024-12-02 06:40:14,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:40:14,104 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 26 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:14,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 854 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:40:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-12-02 06:40:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 106. [2024-12-02 06:40:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 96 states have internal predecessors, (118), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-12-02 06:40:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2024-12-02 06:40:14,114 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 71 [2024-12-02 06:40:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:14,115 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2024-12-02 06:40:14,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 15 states have internal predecessors, (82), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-12-02 06:40:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2024-12-02 06:40:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 06:40:14,116 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:14,116 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:14,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-02 06:40:14,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:14,317 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:14,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:14,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1876525074, now seen corresponding path program 1 times [2024-12-02 06:40:14,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:14,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940804879] [2024-12-02 06:40:14,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:14,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 06:40:14,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:14,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940804879] [2024-12-02 06:40:14,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940804879] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:14,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770838083] [2024-12-02 06:40:14,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:14,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:14,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:14,453 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:14,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 06:40:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:14,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 06:40:14,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 06:40:14,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 06:40:14,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770838083] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:14,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:14,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-12-02 06:40:14,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254446278] [2024-12-02 06:40:14,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:14,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 06:40:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:14,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 06:40:14,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:40:14,758 INFO L87 Difference]: Start difference. First operand 106 states and 134 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:40:14,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:14,936 INFO L93 Difference]: Finished difference Result 302 states and 391 transitions. [2024-12-02 06:40:14,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:40:14,936 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2024-12-02 06:40:14,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:14,938 INFO L225 Difference]: With dead ends: 302 [2024-12-02 06:40:14,938 INFO L226 Difference]: Without dead ends: 197 [2024-12-02 06:40:14,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=267, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:40:14,939 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 190 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:14,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 621 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:40:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-12-02 06:40:14,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 118. [2024-12-02 06:40:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 106 states have (on average 1.2830188679245282) internal successors, (136), 108 states have internal predecessors, (136), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-12-02 06:40:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 152 transitions. [2024-12-02 06:40:14,949 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 152 transitions. Word has length 74 [2024-12-02 06:40:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:14,949 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 152 transitions. [2024-12-02 06:40:14,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 06:40:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 152 transitions. [2024-12-02 06:40:14,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 06:40:14,950 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:40:14,951 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:14,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 06:40:15,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 06:40:15,151 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:40:15,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:40:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1332334922, now seen corresponding path program 1 times [2024-12-02 06:40:15,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:40:15,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394269382] [2024-12-02 06:40:15,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:15,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:40:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 06:40:15,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:40:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394269382] [2024-12-02 06:40:15,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394269382] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:40:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490907738] [2024-12-02 06:40:15,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:40:15,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:15,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:40:15,286 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:40:15,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 06:40:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:40:15,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 06:40:15,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:40:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 06:40:15,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:40:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 06:40:15,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490907738] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:40:15,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:40:15,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 18 [2024-12-02 06:40:15,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486457036] [2024-12-02 06:40:15,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:40:15,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:40:15,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:40:15,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:40:15,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:40:15,938 INFO L87 Difference]: Start difference. First operand 118 states and 152 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 06:40:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:40:16,263 INFO L93 Difference]: Finished difference Result 214 states and 277 transitions. [2024-12-02 06:40:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:40:16,264 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2024-12-02 06:40:16,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:40:16,265 INFO L225 Difference]: With dead ends: 214 [2024-12-02 06:40:16,265 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 06:40:16,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-12-02 06:40:16,266 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 54 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:40:16,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 315 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:40:16,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 06:40:16,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 06:40:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 06:40:16,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 06:40:16,267 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2024-12-02 06:40:16,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:40:16,267 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 06:40:16,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 06:40:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 06:40:16,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 06:40:16,270 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 06:40:16,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 06:40:16,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:40:16,473 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:40:16,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 06:40:17,782 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 06:40:17,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:40:17 BoogieIcfgContainer [2024-12-02 06:40:17,792 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 06:40:17,792 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 06:40:17,792 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 06:40:17,792 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 06:40:17,793 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:40:05" (3/4) ... [2024-12-02 06:40:17,795 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 06:40:17,798 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2024-12-02 06:40:17,798 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-12-02 06:40:17,803 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-12-02 06:40:17,803 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-12-02 06:40:17,804 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 06:40:17,804 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 06:40:17,821 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((e == \old(e)) && (m <= 33554431)) && ((m == 1) || (m == \old(m)))) || (((((e <= \old(e)) && ((m % 2) == 0)) && ((m / 2) <= 4294967295)) && (0 <= (m / 2))) && (m <= 33554431))) && (0 < \old(m))) [2024-12-02 06:40:17,821 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0 == 0) && (\old(e) <= e)) && (16777216 <= m)) && (\old(m) != 1)) || (((e == \old(e)) && (m == \old(m))) && (16777216 <= m))) && (0 < \old(m))) [2024-12-02 06:40:17,837 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0 == 0) && (\old(e) <= e)) && (16777216 <= m)) && (\old(m) != 1)) || (((e == \old(e)) && (m == \old(m))) && (16777216 <= m))) && (0 < \old(m))) [2024-12-02 06:40:17,838 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((e == \old(e)) && (m <= 33554431)) && ((m == 1) || (m == \old(m)))) || (((((e <= \old(e)) && ((m % 2) == 0)) && ((m / 2) <= 4294967295)) && (0 <= (m / 2))) && (m <= 33554431))) && (0 < \old(m))) [2024-12-02 06:40:17,866 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 06:40:17,867 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 06:40:17,867 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 06:40:17,867 INFO L158 Benchmark]: Toolchain (without parser) took 13332.02ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 117.6MB in the beginning and 128.3MB in the end (delta: -10.6MB). Peak memory consumption was 156.4MB. Max. memory is 16.1GB. [2024-12-02 06:40:17,868 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:40:17,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.30ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 103.9MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:40:17,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.74ms. Allocated memory is still 142.6MB. Free memory was 103.9MB in the beginning and 102.4MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:40:17,868 INFO L158 Benchmark]: Boogie Preprocessor took 36.30ms. Allocated memory is still 142.6MB. Free memory was 102.4MB in the beginning and 100.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:40:17,868 INFO L158 Benchmark]: RCFGBuilder took 458.72ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 80.8MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 06:40:17,869 INFO L158 Benchmark]: TraceAbstraction took 12500.66ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 80.2MB in the beginning and 136.5MB in the end (delta: -56.3MB). Peak memory consumption was 150.1MB. Max. memory is 16.1GB. [2024-12-02 06:40:17,869 INFO L158 Benchmark]: Witness Printer took 74.50ms. Allocated memory is still 310.4MB. Free memory was 136.5MB in the beginning and 128.3MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:40:17,871 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.30ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 103.9MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.74ms. Allocated memory is still 142.6MB. Free memory was 103.9MB in the beginning and 102.4MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.30ms. Allocated memory is still 142.6MB. Free memory was 102.4MB in the beginning and 100.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 458.72ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 80.8MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12500.66ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 80.2MB in the beginning and 136.5MB in the end (delta: -56.3MB). Peak memory consumption was 150.1MB. Max. memory is 16.1GB. * Witness Printer took 74.50ms. Allocated memory is still 310.4MB. Free memory was 136.5MB in the beginning and 128.3MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. 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 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.1s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 731 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 731 mSDsluCounter, 7885 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6307 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2081 IncrementalHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 1578 mSDtfsCounter, 2081 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1346 GetRequests, 1179 SyntacticMatches, 4 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=18, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 277 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 1864 NumberOfCodeBlocks, 1864 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2261 ConstructedInterpolants, 0 QuantifiedInterpolants, 3807 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2427 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 40 InterpolantComputations, 12 PerfectInterpolantSequences, 1119/1367 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((e == \old(e)) && (m <= 33554431)) && ((m == 1) || (m == \old(m)))) || (((((e <= \old(e)) && ((m % 2) == 0)) && ((m / 2) <= 4294967295)) && (0 <= (m / 2))) && (m <= 33554431))) && (0 < \old(m))) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((0 == 0) && (\old(e) <= e)) && (16777216 <= m)) && (\old(m) != 1)) || (((e == \old(e)) && (m == \old(m))) && (16777216 <= m))) && (0 < \old(m))) RESULT: Ultimate proved your program to be correct! [2024-12-02 06:40:17,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02a3e197-9a20-4d72-b518-f81832a46dd5/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 Result: TRUE