./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya --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 69a106a7fe4e968f8159960741f93feca1d4d684a8ecc183635291d7b7b9ab5b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:26:13,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:26:13,591 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:26:13,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:26:13,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:26:13,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:26:13,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:26:13,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:26:13,624 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:26:13,624 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:26:13,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:26:13,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:26:13,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:26:13,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:26:13,627 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:26:13,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:26:13,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:26:13,629 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:26:13,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:26:13,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:26:13,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:26:13,631 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:26:13,631 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:26:13,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:26:13,632 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:26:13,633 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:26:13,633 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:26:13,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:26:13,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:26:13,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:26:13,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:26:13,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:26:13,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:26:13,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:26:13,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:26:13,636 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:26:13,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:26:13,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:26:13,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:26:13,637 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:26:13,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:26:13,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:26:13,638 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a106a7fe4e968f8159960741f93feca1d4d684a8ecc183635291d7b7b9ab5b [2023-11-29 04:26:13,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:26:13,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:26:13,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:26:13,913 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:26:13,913 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:26:13,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2023-11-29 04:26:16,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:26:16,953 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:26:16,954 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2023-11-29 04:26:16,970 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/data/0b334fb93/c3c1f64342c5492d9b730f493ec67bb2/FLAG734d9ccbb [2023-11-29 04:26:16,986 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/data/0b334fb93/c3c1f64342c5492d9b730f493ec67bb2 [2023-11-29 04:26:16,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:26:16,990 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:26:16,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:26:16,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:26:16,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:26:16,998 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:26:16" (1/1) ... [2023-11-29 04:26:16,999 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b476191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:16, skipping insertion in model container [2023-11-29 04:26:17,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:26:16" (1/1) ... [2023-11-29 04:26:17,052 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:26:17,182 WARN L240 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_4d34c01e-6f48-4237-a23e-68544b18882d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i[916,929] [2023-11-29 04:26:17,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:26:17,401 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:26:17,412 WARN L240 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_4d34c01e-6f48-4237-a23e-68544b18882d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i[916,929] [2023-11-29 04:26:17,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:26:17,524 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:26:17,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17 WrapperNode [2023-11-29 04:26:17,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:26:17,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:26:17,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:26:17,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:26:17,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,679 INFO L138 Inliner]: procedures = 26, calls = 122, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 858 [2023-11-29 04:26:17,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:26:17,681 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:26:17,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:26:17,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:26:17,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,768 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]. [2023-11-29 04:26:17,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:26:17,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:26:17,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:26:17,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:26:17,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (1/1) ... [2023-11-29 04:26:17,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:26:17,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:17,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:26:17,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:26:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:26:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:26:17,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:26:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:26:17,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:26:17,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:26:18,078 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:26:18,081 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:26:19,228 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:26:19,292 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:26:19,292 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:26:19,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:26:19 BoogieIcfgContainer [2023-11-29 04:26:19,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:26:19,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:26:19,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:26:19,299 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:26:19,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:26:16" (1/3) ... [2023-11-29 04:26:19,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ecde6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:26:19, skipping insertion in model container [2023-11-29 04:26:19,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:26:17" (2/3) ... [2023-11-29 04:26:19,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ecde6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:26:19, skipping insertion in model container [2023-11-29 04:26:19,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:26:19" (3/3) ... [2023-11-29 04:26:19,302 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2023-11-29 04:26:19,323 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:26:19,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:26:19,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:26:19,408 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@1eb7e774, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:26:19,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:26:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 223 states have (on average 1.6322869955156951) internal successors, (364), 224 states have internal predecessors, (364), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-29 04:26:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2023-11-29 04:26:19,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:19,463 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:19,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:19,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:19,470 INFO L85 PathProgramCache]: Analyzing trace with hash 459238871, now seen corresponding path program 1 times [2023-11-29 04:26:19,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:19,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457951928] [2023-11-29 04:26:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:19,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:19,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:19,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457951928] [2023-11-29 04:26:19,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:26:19,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506910916] [2023-11-29 04:26:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:19,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:19,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:19,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:19,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:26:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:20,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:26:20,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 23328 trivial. 0 not checked. [2023-11-29 04:26:20,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:26:20,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506910916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:26:20,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:26:20,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:26:20,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268138652] [2023-11-29 04:26:20,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:26:20,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:26:20,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:26:20,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:26:20,567 INFO L87 Difference]: Start difference. First operand has 335 states, 223 states have (on average 1.6322869955156951) internal successors, (364), 224 states have internal predecessors, (364), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-29 04:26:20,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:20,658 INFO L93 Difference]: Finished difference Result 667 states and 1271 transitions. [2023-11-29 04:26:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:26:20,661 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) Word has length 693 [2023-11-29 04:26:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:20,675 INFO L225 Difference]: With dead ends: 667 [2023-11-29 04:26:20,675 INFO L226 Difference]: Without dead ends: 333 [2023-11-29 04:26:20,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:26:20,688 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:20,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 573 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:26:20,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-29 04:26:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2023-11-29 04:26:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 222 states have (on average 1.6126126126126126) internal successors, (358), 222 states have internal predecessors, (358), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-29 04:26:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 576 transitions. [2023-11-29 04:26:20,795 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 576 transitions. Word has length 693 [2023-11-29 04:26:20,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:20,796 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 576 transitions. [2023-11-29 04:26:20,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 2 states have call successors, (109), 2 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-29 04:26:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 576 transitions. [2023-11-29 04:26:20,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2023-11-29 04:26:20,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:20,819 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:20,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:26:21,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:21,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:21,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash 286689993, now seen corresponding path program 1 times [2023-11-29 04:26:21,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:21,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645292215] [2023-11-29 04:26:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:21,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:21,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:21,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518514876] [2023-11-29 04:26:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:21,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:21,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:21,170 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:21,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:26:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:21,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:26:21,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:21,906 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:26:21,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:26:21,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:21,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645292215] [2023-11-29 04:26:21,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:21,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518514876] [2023-11-29 04:26:21,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518514876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:26:21,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:26:21,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:26:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293781355] [2023-11-29 04:26:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:26:21,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:26:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:26:21,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:26:21,913 INFO L87 Difference]: Start difference. First operand 333 states and 576 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:26:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:22,034 INFO L93 Difference]: Finished difference Result 997 states and 1726 transitions. [2023-11-29 04:26:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:26:22,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 693 [2023-11-29 04:26:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:22,047 INFO L225 Difference]: With dead ends: 997 [2023-11-29 04:26:22,047 INFO L226 Difference]: Without dead ends: 665 [2023-11-29 04:26:22,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:26:22,052 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 525 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:22,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1128 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:26:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2023-11-29 04:26:22,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2023-11-29 04:26:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 442 states have (on average 1.6108597285067874) internal successors, (712), 442 states have internal predecessors, (712), 218 states have call successors, (218), 2 states have call predecessors, (218), 2 states have return successors, (218), 218 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 04:26:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1148 transitions. [2023-11-29 04:26:22,239 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1148 transitions. Word has length 693 [2023-11-29 04:26:22,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:22,242 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 1148 transitions. [2023-11-29 04:26:22,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:26:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1148 transitions. [2023-11-29 04:26:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2023-11-29 04:26:22,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:22,258 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:22,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:26:22,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:22,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:22,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1672893387, now seen corresponding path program 1 times [2023-11-29 04:26:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:22,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014351993] [2023-11-29 04:26:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:22,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:22,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:22,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353816437] [2023-11-29 04:26:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:22,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:22,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:22,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:22,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:26:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:23,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:26:23,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11538 proven. 189 refuted. 0 times theorem prover too weak. 11817 trivial. 0 not checked. [2023-11-29 04:26:23,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:26:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 135 proven. 189 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-29 04:26:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:24,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014351993] [2023-11-29 04:26:24,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353816437] [2023-11-29 04:26:24,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353816437] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:26:24,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:26:24,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:26:24,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274111121] [2023-11-29 04:26:24,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:26:24,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:26:24,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:24,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:26:24,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:26:24,441 INFO L87 Difference]: Start difference. First operand 663 states and 1148 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (172), 2 states have call predecessors, (172), 4 states have return successors, (173), 2 states have call predecessors, (173), 2 states have call successors, (173) [2023-11-29 04:26:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:25,282 INFO L93 Difference]: Finished difference Result 1339 states and 2305 transitions. [2023-11-29 04:26:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:26:25,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (172), 2 states have call predecessors, (172), 4 states have return successors, (173), 2 states have call predecessors, (173), 2 states have call successors, (173) Word has length 693 [2023-11-29 04:26:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:25,292 INFO L225 Difference]: With dead ends: 1339 [2023-11-29 04:26:25,292 INFO L226 Difference]: Without dead ends: 677 [2023-11-29 04:26:25,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1388 GetRequests, 1378 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:26:25,297 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 886 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:25,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1120 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:26:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-11-29 04:26:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 669. [2023-11-29 04:26:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 446 states have (on average 1.5874439461883407) internal successors, (708), 446 states have internal predecessors, (708), 218 states have call successors, (218), 4 states have call predecessors, (218), 4 states have return successors, (218), 218 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 04:26:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1144 transitions. [2023-11-29 04:26:25,446 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1144 transitions. Word has length 693 [2023-11-29 04:26:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:25,448 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1144 transitions. [2023-11-29 04:26:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (172), 2 states have call predecessors, (172), 4 states have return successors, (173), 2 states have call predecessors, (173), 2 states have call successors, (173) [2023-11-29 04:26:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1144 transitions. [2023-11-29 04:26:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2023-11-29 04:26:25,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:25,457 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:25,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:26:25,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:25,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:25,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:25,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1083733879, now seen corresponding path program 1 times [2023-11-29 04:26:25,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:25,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349144215] [2023-11-29 04:26:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:25,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:25,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:25,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156917788] [2023-11-29 04:26:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:25,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:25,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:25,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:25,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:26:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:26,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:26:26,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11374 proven. 195 refuted. 0 times theorem prover too weak. 11975 trivial. 0 not checked. [2023-11-29 04:26:26,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:26:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 129 proven. 195 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-29 04:26:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:27,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349144215] [2023-11-29 04:26:27,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:27,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156917788] [2023-11-29 04:26:27,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156917788] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:26:27,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:26:27,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:26:27,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124010087] [2023-11-29 04:26:27,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:26:27,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:26:27,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:26:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:26:27,434 INFO L87 Difference]: Start difference. First operand 669 states and 1144 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (174), 2 states have call predecessors, (174), 4 states have return successors, (175), 2 states have call predecessors, (175), 2 states have call successors, (175) [2023-11-29 04:26:28,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:28,130 INFO L93 Difference]: Finished difference Result 1351 states and 2293 transitions. [2023-11-29 04:26:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:26:28,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (174), 2 states have call predecessors, (174), 4 states have return successors, (175), 2 states have call predecessors, (175), 2 states have call successors, (175) Word has length 693 [2023-11-29 04:26:28,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:28,137 INFO L225 Difference]: With dead ends: 1351 [2023-11-29 04:26:28,138 INFO L226 Difference]: Without dead ends: 683 [2023-11-29 04:26:28,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1388 GetRequests, 1378 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:26:28,141 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 543 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:28,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 1094 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:26:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-11-29 04:26:28,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 671. [2023-11-29 04:26:28,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 446 states have (on average 1.5515695067264574) internal successors, (692), 446 states have internal predecessors, (692), 218 states have call successors, (218), 6 states have call predecessors, (218), 6 states have return successors, (218), 218 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 04:26:28,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1128 transitions. [2023-11-29 04:26:28,288 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1128 transitions. Word has length 693 [2023-11-29 04:26:28,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:28,290 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1128 transitions. [2023-11-29 04:26:28,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (174), 2 states have call predecessors, (174), 4 states have return successors, (175), 2 states have call predecessors, (175), 2 states have call successors, (175) [2023-11-29 04:26:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1128 transitions. [2023-11-29 04:26:28,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2023-11-29 04:26:28,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:28,298 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:28,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:26:28,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:28,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:28,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:28,501 INFO L85 PathProgramCache]: Analyzing trace with hash -214362640, now seen corresponding path program 1 times [2023-11-29 04:26:28,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:28,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875242014] [2023-11-29 04:26:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:28,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:28,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:28,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573316313] [2023-11-29 04:26:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:28,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:28,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:28,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:28,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:26:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:29,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:26:29,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:26:29,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:26:29,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:29,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875242014] [2023-11-29 04:26:29,173 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:29,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573316313] [2023-11-29 04:26:29,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573316313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:26:29,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:26:29,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:26:29,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57540540] [2023-11-29 04:26:29,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:26:29,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:26:29,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:29,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:26:29,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:26:29,177 INFO L87 Difference]: Start difference. First operand 671 states and 1128 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:26:29,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:29,352 INFO L93 Difference]: Finished difference Result 2011 states and 3382 transitions. [2023-11-29 04:26:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:26:29,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 694 [2023-11-29 04:26:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:29,366 INFO L225 Difference]: With dead ends: 2011 [2023-11-29 04:26:29,366 INFO L226 Difference]: Without dead ends: 1341 [2023-11-29 04:26:29,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:26:29,371 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 518 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:29,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1489 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:26:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2023-11-29 04:26:29,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1339. [2023-11-29 04:26:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 890 states have (on average 1.5460674157303371) internal successors, (1376), 890 states have internal predecessors, (1376), 436 states have call successors, (436), 12 states have call predecessors, (436), 12 states have return successors, (436), 436 states have call predecessors, (436), 436 states have call successors, (436) [2023-11-29 04:26:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2248 transitions. [2023-11-29 04:26:29,679 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2248 transitions. Word has length 694 [2023-11-29 04:26:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:29,680 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 2248 transitions. [2023-11-29 04:26:29,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:26:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2248 transitions. [2023-11-29 04:26:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2023-11-29 04:26:29,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:29,690 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:29,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:26:29,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:29,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:29,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:29,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1694095150, now seen corresponding path program 1 times [2023-11-29 04:26:29,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:29,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025464417] [2023-11-29 04:26:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:29,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:29,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:29,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807000842] [2023-11-29 04:26:29,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:29,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:29,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:29,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:29,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:26:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:30,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:26:30,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:26:30,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:26:30,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:30,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025464417] [2023-11-29 04:26:30,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:30,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807000842] [2023-11-29 04:26:30,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807000842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:26:30,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:26:30,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:26:30,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860392196] [2023-11-29 04:26:30,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:26:30,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:26:30,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:30,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:26:30,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:26:30,526 INFO L87 Difference]: Start difference. First operand 1339 states and 2248 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:26:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:30,747 INFO L93 Difference]: Finished difference Result 2937 states and 4975 transitions. [2023-11-29 04:26:30,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:26:30,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 694 [2023-11-29 04:26:30,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:30,762 INFO L225 Difference]: With dead ends: 2937 [2023-11-29 04:26:30,762 INFO L226 Difference]: Without dead ends: 1339 [2023-11-29 04:26:30,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:26:30,769 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 86 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:30,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1636 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:26:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2023-11-29 04:26:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1339. [2023-11-29 04:26:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 890 states have (on average 1.5415730337078652) internal successors, (1372), 890 states have internal predecessors, (1372), 436 states have call successors, (436), 12 states have call predecessors, (436), 12 states have return successors, (436), 436 states have call predecessors, (436), 436 states have call successors, (436) [2023-11-29 04:26:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2244 transitions. [2023-11-29 04:26:31,097 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2244 transitions. Word has length 694 [2023-11-29 04:26:31,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:31,098 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 2244 transitions. [2023-11-29 04:26:31,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:26:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2244 transitions. [2023-11-29 04:26:31,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2023-11-29 04:26:31,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:31,107 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:31,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:26:31,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:31,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:31,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1895919084, now seen corresponding path program 1 times [2023-11-29 04:26:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:31,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104274829] [2023-11-29 04:26:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:31,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:31,406 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:31,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233620104] [2023-11-29 04:26:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:31,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:31,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:31,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:31,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:26:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:31,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:26:31,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-29 04:26:32,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:26:32,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:32,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104274829] [2023-11-29 04:26:32,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:32,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233620104] [2023-11-29 04:26:32,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233620104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:26:32,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:26:32,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:26:32,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590325797] [2023-11-29 04:26:32,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:26:32,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:26:32,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:32,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:26:32,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:26:32,014 INFO L87 Difference]: Start difference. First operand 1339 states and 2244 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:26:32,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:32,659 INFO L93 Difference]: Finished difference Result 2725 states and 4531 transitions. [2023-11-29 04:26:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:26:32,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 1 states have call successors, (109) Word has length 694 [2023-11-29 04:26:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:32,673 INFO L225 Difference]: With dead ends: 2725 [2023-11-29 04:26:32,674 INFO L226 Difference]: Without dead ends: 1387 [2023-11-29 04:26:32,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:26:32,681 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 394 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:32,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1103 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:26:32,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2023-11-29 04:26:32,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1355. [2023-11-29 04:26:32,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 902 states have (on average 1.5254988913525498) internal successors, (1376), 902 states have internal predecessors, (1376), 436 states have call successors, (436), 16 states have call predecessors, (436), 16 states have return successors, (436), 436 states have call predecessors, (436), 436 states have call successors, (436) [2023-11-29 04:26:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 2248 transitions. [2023-11-29 04:26:32,989 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 2248 transitions. Word has length 694 [2023-11-29 04:26:32,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:32,991 INFO L495 AbstractCegarLoop]: Abstraction has 1355 states and 2248 transitions. [2023-11-29 04:26:32,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (109), 1 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:26:32,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 2248 transitions. [2023-11-29 04:26:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2023-11-29 04:26:33,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:33,001 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:33,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:26:33,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 04:26:33,202 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:33,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:33,202 INFO L85 PathProgramCache]: Analyzing trace with hash -53118352, now seen corresponding path program 1 times [2023-11-29 04:26:33,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:33,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532342848] [2023-11-29 04:26:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:33,288 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:33,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1314375523] [2023-11-29 04:26:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:33,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:33,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:33,291 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:33,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:26:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:33,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:26:33,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:26:34,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:26:34,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:34,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532342848] [2023-11-29 04:26:34,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:34,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314375523] [2023-11-29 04:26:34,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314375523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:26:34,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:26:34,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:26:34,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619116098] [2023-11-29 04:26:34,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:26:34,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:26:34,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:26:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:26:34,488 INFO L87 Difference]: Start difference. First operand 1355 states and 2248 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:26:35,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:35,441 INFO L93 Difference]: Finished difference Result 4689 states and 7877 transitions. [2023-11-29 04:26:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:26:35,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 694 [2023-11-29 04:26:35,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:35,464 INFO L225 Difference]: With dead ends: 4689 [2023-11-29 04:26:35,464 INFO L226 Difference]: Without dead ends: 3335 [2023-11-29 04:26:35,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:26:35,471 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 1057 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:35,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 2334 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:26:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2023-11-29 04:26:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3099. [2023-11-29 04:26:35,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2190 states have (on average 1.5753424657534247) internal successors, (3450), 2190 states have internal predecessors, (3450), 872 states have call successors, (872), 36 states have call predecessors, (872), 36 states have return successors, (872), 872 states have call predecessors, (872), 872 states have call successors, (872) [2023-11-29 04:26:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 5194 transitions. [2023-11-29 04:26:35,936 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 5194 transitions. Word has length 694 [2023-11-29 04:26:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:35,937 INFO L495 AbstractCegarLoop]: Abstraction has 3099 states and 5194 transitions. [2023-11-29 04:26:35,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:26:35,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 5194 transitions. [2023-11-29 04:26:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2023-11-29 04:26:35,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:35,946 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:35,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 04:26:36,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 04:26:36,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:36,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:36,148 INFO L85 PathProgramCache]: Analyzing trace with hash 8921262, now seen corresponding path program 1 times [2023-11-29 04:26:36,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:36,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039284521] [2023-11-29 04:26:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:36,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:36,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113905320] [2023-11-29 04:26:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:36,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:36,218 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:36,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:26:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:36,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:26:36,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2023-11-29 04:26:36,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:26:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 204 proven. 120 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-29 04:26:37,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:37,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039284521] [2023-11-29 04:26:37,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:37,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113905320] [2023-11-29 04:26:37,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113905320] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:26:37,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:26:37,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2023-11-29 04:26:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739027318] [2023-11-29 04:26:37,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:26:37,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:26:37,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:26:37,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:26:37,423 INFO L87 Difference]: Start difference. First operand 3099 states and 5194 transitions. Second operand has 10 states, 10 states have (on average 23.8) internal successors, (238), 10 states have internal predecessors, (238), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2023-11-29 04:26:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:38,732 INFO L93 Difference]: Finished difference Result 7903 states and 13137 transitions. [2023-11-29 04:26:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 04:26:38,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.8) internal successors, (238), 10 states have internal predecessors, (238), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) Word has length 694 [2023-11-29 04:26:38,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:38,767 INFO L225 Difference]: With dead ends: 7903 [2023-11-29 04:26:38,767 INFO L226 Difference]: Without dead ends: 4805 [2023-11-29 04:26:38,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1399 GetRequests, 1379 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:26:38,779 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 856 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:38,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 2261 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:26:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2023-11-29 04:26:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 4695. [2023-11-29 04:26:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 3320 states have (on average 1.5647590361445782) internal successors, (5195), 3320 states have internal predecessors, (5195), 1308 states have call successors, (1308), 66 states have call predecessors, (1308), 66 states have return successors, (1308), 1308 states have call predecessors, (1308), 1308 states have call successors, (1308) [2023-11-29 04:26:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 7811 transitions. [2023-11-29 04:26:39,677 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 7811 transitions. Word has length 694 [2023-11-29 04:26:39,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:39,678 INFO L495 AbstractCegarLoop]: Abstraction has 4695 states and 7811 transitions. [2023-11-29 04:26:39,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.8) internal successors, (238), 10 states have internal predecessors, (238), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2023-11-29 04:26:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 7811 transitions. [2023-11-29 04:26:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-29 04:26:39,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:39,689 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:39,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:26:39,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:39,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:39,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:39,897 INFO L85 PathProgramCache]: Analyzing trace with hash 930751102, now seen corresponding path program 1 times [2023-11-29 04:26:39,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:39,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424997087] [2023-11-29 04:26:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:39,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:39,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:39,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551292733] [2023-11-29 04:26:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:39,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:39,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:39,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:39,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:26:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:40,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 1572 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:26:40,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 14304 proven. 300 refuted. 0 times theorem prover too weak. 8940 trivial. 0 not checked. [2023-11-29 04:26:41,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:26:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 342 proven. 303 refuted. 0 times theorem prover too weak. 22899 trivial. 0 not checked. [2023-11-29 04:26:42,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:42,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424997087] [2023-11-29 04:26:42,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:42,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551292733] [2023-11-29 04:26:42,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551292733] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:26:42,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:26:42,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-29 04:26:42,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480245807] [2023-11-29 04:26:42,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:26:42,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 04:26:42,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:42,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 04:26:42,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2023-11-29 04:26:42,456 INFO L87 Difference]: Start difference. First operand 4695 states and 7811 transitions. Second operand has 20 states, 20 states have (on average 12.15) internal successors, (243), 20 states have internal predecessors, (243), 5 states have call successors, (167), 3 states have call predecessors, (167), 7 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) [2023-11-29 04:26:46,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:46,130 INFO L93 Difference]: Finished difference Result 18187 states and 30445 transitions. [2023-11-29 04:26:46,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 04:26:46,131 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.15) internal successors, (243), 20 states have internal predecessors, (243), 5 states have call successors, (167), 3 states have call predecessors, (167), 7 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) Word has length 695 [2023-11-29 04:26:46,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:46,198 INFO L225 Difference]: With dead ends: 18187 [2023-11-29 04:26:46,198 INFO L226 Difference]: Without dead ends: 13493 [2023-11-29 04:26:46,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1413 GetRequests, 1373 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=526, Invalid=1196, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 04:26:46,209 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 2263 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 3677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:46,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2346 Valid, 3425 Invalid, 3677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 04:26:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2023-11-29 04:26:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 8115. [2023-11-29 04:26:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8115 states, 6320 states have (on average 1.6289556962025316) internal successors, (10295), 6332 states have internal predecessors, (10295), 1692 states have call successors, (1692), 102 states have call predecessors, (1692), 102 states have return successors, (1692), 1680 states have call predecessors, (1692), 1692 states have call successors, (1692) [2023-11-29 04:26:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8115 states to 8115 states and 13679 transitions. [2023-11-29 04:26:47,155 INFO L78 Accepts]: Start accepts. Automaton has 8115 states and 13679 transitions. Word has length 695 [2023-11-29 04:26:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:47,156 INFO L495 AbstractCegarLoop]: Abstraction has 8115 states and 13679 transitions. [2023-11-29 04:26:47,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.15) internal successors, (243), 20 states have internal predecessors, (243), 5 states have call successors, (167), 3 states have call predecessors, (167), 7 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) [2023-11-29 04:26:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 8115 states and 13679 transitions. [2023-11-29 04:26:47,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2023-11-29 04:26:47,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:47,169 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:47,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:26:47,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 04:26:47,370 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:47,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1348147708, now seen corresponding path program 1 times [2023-11-29 04:26:47,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:47,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414279652] [2023-11-29 04:26:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:47,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:47,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:47,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712597989] [2023-11-29 04:26:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:47,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:47,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:47,470 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:47,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:26:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:47,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 1573 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:26:47,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 16908 proven. 777 refuted. 0 times theorem prover too weak. 5859 trivial. 0 not checked. [2023-11-29 04:26:49,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:26:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 240 proven. 84 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-29 04:26:50,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:50,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414279652] [2023-11-29 04:26:50,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:50,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712597989] [2023-11-29 04:26:50,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712597989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:26:50,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:26:50,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2023-11-29 04:26:50,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549195352] [2023-11-29 04:26:50,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:26:50,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:26:50,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:26:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:26:50,381 INFO L87 Difference]: Start difference. First operand 8115 states and 13679 transitions. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 5 states have call successors, (182), 4 states have call predecessors, (182), 8 states have return successors, (184), 5 states have call predecessors, (184), 5 states have call successors, (184) [2023-11-29 04:26:52,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:52,070 INFO L93 Difference]: Finished difference Result 16673 states and 27747 transitions. [2023-11-29 04:26:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:26:52,070 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 5 states have call successors, (182), 4 states have call predecessors, (182), 8 states have return successors, (184), 5 states have call predecessors, (184), 5 states have call successors, (184) Word has length 695 [2023-11-29 04:26:52,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:52,096 INFO L225 Difference]: With dead ends: 16673 [2023-11-29 04:26:52,096 INFO L226 Difference]: Without dead ends: 8559 [2023-11-29 04:26:52,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1404 GetRequests, 1375 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=662, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:26:52,112 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 971 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:52,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1866 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:26:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8559 states. [2023-11-29 04:26:52,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8559 to 8331. [2023-11-29 04:26:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8331 states, 6482 states have (on average 1.6076828139463128) internal successors, (10421), 6494 states have internal predecessors, (10421), 1692 states have call successors, (1692), 156 states have call predecessors, (1692), 156 states have return successors, (1692), 1680 states have call predecessors, (1692), 1692 states have call successors, (1692) [2023-11-29 04:26:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8331 states to 8331 states and 13805 transitions. [2023-11-29 04:26:52,900 INFO L78 Accepts]: Start accepts. Automaton has 8331 states and 13805 transitions. Word has length 695 [2023-11-29 04:26:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:26:52,901 INFO L495 AbstractCegarLoop]: Abstraction has 8331 states and 13805 transitions. [2023-11-29 04:26:52,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 5 states have call successors, (182), 4 states have call predecessors, (182), 8 states have return successors, (184), 5 states have call predecessors, (184), 5 states have call successors, (184) [2023-11-29 04:26:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8331 states and 13805 transitions. [2023-11-29 04:26:52,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-11-29 04:26:52,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:26:52,910 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:26:52,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:26:53,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 04:26:53,111 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:26:53,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:26:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1280149497, now seen corresponding path program 1 times [2023-11-29 04:26:53,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:26:53,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827439572] [2023-11-29 04:26:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:53,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:26:53,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:26:53,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326616554] [2023-11-29 04:26:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:26:53,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:26:53,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:26:53,185 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:26:53,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:26:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:26:53,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:26:53,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:26:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 4740 proven. 288 refuted. 0 times theorem prover too weak. 18516 trivial. 0 not checked. [2023-11-29 04:26:55,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:26:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 36 proven. 288 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-29 04:26:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:26:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827439572] [2023-11-29 04:26:56,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:26:56,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326616554] [2023-11-29 04:26:56,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326616554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:26:56,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:26:56,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 04:26:56,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044205773] [2023-11-29 04:26:56,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:26:56,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:26:56,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:26:56,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:26:56,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:26:56,330 INFO L87 Difference]: Start difference. First operand 8331 states and 13805 transitions. Second operand has 12 states, 12 states have (on average 25.416666666666668) internal successors, (305), 12 states have internal predecessors, (305), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) [2023-11-29 04:26:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:26:59,079 INFO L93 Difference]: Finished difference Result 26771 states and 43959 transitions. [2023-11-29 04:26:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:26:59,080 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 25.416666666666668) internal successors, (305), 12 states have internal predecessors, (305), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) Word has length 696 [2023-11-29 04:26:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:26:59,113 INFO L225 Difference]: With dead ends: 26771 [2023-11-29 04:26:59,113 INFO L226 Difference]: Without dead ends: 18441 [2023-11-29 04:26:59,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1401 GetRequests, 1382 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2023-11-29 04:26:59,129 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1718 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:26:59,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 2111 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 04:26:59,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18441 states. [2023-11-29 04:27:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18441 to 17091. [2023-11-29 04:27:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17091 states, 13370 states have (on average 1.6053851907255048) internal successors, (21464), 13394 states have internal predecessors, (21464), 3384 states have call successors, (3384), 336 states have call predecessors, (3384), 336 states have return successors, (3384), 3360 states have call predecessors, (3384), 3384 states have call successors, (3384) [2023-11-29 04:27:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17091 states to 17091 states and 28232 transitions. [2023-11-29 04:27:01,043 INFO L78 Accepts]: Start accepts. Automaton has 17091 states and 28232 transitions. Word has length 696 [2023-11-29 04:27:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:27:01,044 INFO L495 AbstractCegarLoop]: Abstraction has 17091 states and 28232 transitions. [2023-11-29 04:27:01,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.416666666666668) internal successors, (305), 12 states have internal predecessors, (305), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) [2023-11-29 04:27:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 17091 states and 28232 transitions. [2023-11-29 04:27:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-11-29 04:27:01,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:27:01,052 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:01,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 04:27:01,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:27:01,253 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:27:01,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash 693343483, now seen corresponding path program 1 times [2023-11-29 04:27:01,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:27:01,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247875079] [2023-11-29 04:27:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:01,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:27:01,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:27:01,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140270504] [2023-11-29 04:27:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:01,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:01,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:01,316 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:27:01,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:27:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:01,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:27:01,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:27:02,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:27:02,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:27:02,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247875079] [2023-11-29 04:27:02,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:27:02,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140270504] [2023-11-29 04:27:02,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140270504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:27:02,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:27:02,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:27:02,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704614761] [2023-11-29 04:27:02,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:27:02,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:27:02,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:27:02,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:27:02,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:27:02,272 INFO L87 Difference]: Start difference. First operand 17091 states and 28232 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:27:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:27:05,019 INFO L93 Difference]: Finished difference Result 51343 states and 84838 transitions. [2023-11-29 04:27:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:27:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 696 [2023-11-29 04:27:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:27:05,084 INFO L225 Difference]: With dead ends: 51343 [2023-11-29 04:27:05,084 INFO L226 Difference]: Without dead ends: 34253 [2023-11-29 04:27:05,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:27:05,106 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 251 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:27:05,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 1417 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:27:05,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34253 states. [2023-11-29 04:27:08,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34253 to 34251. [2023-11-29 04:27:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34251 states, 26810 states have (on average 1.603804550540843) internal successors, (42998), 26858 states have internal predecessors, (42998), 6768 states have call successors, (6768), 672 states have call predecessors, (6768), 672 states have return successors, (6768), 6720 states have call predecessors, (6768), 6768 states have call successors, (6768) [2023-11-29 04:27:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34251 states to 34251 states and 56534 transitions. [2023-11-29 04:27:08,520 INFO L78 Accepts]: Start accepts. Automaton has 34251 states and 56534 transitions. Word has length 696 [2023-11-29 04:27:08,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:27:08,521 INFO L495 AbstractCegarLoop]: Abstraction has 34251 states and 56534 transitions. [2023-11-29 04:27:08,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:27:08,521 INFO L276 IsEmpty]: Start isEmpty. Operand 34251 states and 56534 transitions. [2023-11-29 04:27:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-11-29 04:27:08,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:27:08,537 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:08,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 04:27:08,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 04:27:08,738 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:27:08,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash -260596675, now seen corresponding path program 1 times [2023-11-29 04:27:08,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:27:08,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304765202] [2023-11-29 04:27:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:08,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:27:08,809 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:27:08,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640796282] [2023-11-29 04:27:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:08,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:08,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:08,811 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:27:08,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 04:27:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:09,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:27:09,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:27:10,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:27:10,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:27:10,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304765202] [2023-11-29 04:27:10,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:27:10,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640796282] [2023-11-29 04:27:10,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640796282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:27:10,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:27:10,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:27:10,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676773355] [2023-11-29 04:27:10,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:27:10,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:27:10,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:27:10,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:27:10,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:27:10,047 INFO L87 Difference]: Start difference. First operand 34251 states and 56534 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:27:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:27:21,600 INFO L93 Difference]: Finished difference Result 172165 states and 284011 transitions. [2023-11-29 04:27:21,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:27:21,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 696 [2023-11-29 04:27:21,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:27:21,856 INFO L225 Difference]: With dead ends: 172165 [2023-11-29 04:27:21,856 INFO L226 Difference]: Without dead ends: 137915 [2023-11-29 04:27:21,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:27:21,918 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 1461 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:27:21,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 2734 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:27:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137915 states. [2023-11-29 04:27:31,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137915 to 69075. [2023-11-29 04:27:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69075 states, 54194 states have (on average 1.602723548732332) internal successors, (86858), 54290 states have internal predecessors, (86858), 13536 states have call successors, (13536), 1344 states have call predecessors, (13536), 1344 states have return successors, (13536), 13440 states have call predecessors, (13536), 13536 states have call successors, (13536) [2023-11-29 04:27:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69075 states to 69075 states and 113930 transitions. [2023-11-29 04:27:32,216 INFO L78 Accepts]: Start accepts. Automaton has 69075 states and 113930 transitions. Word has length 696 [2023-11-29 04:27:32,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:27:32,217 INFO L495 AbstractCegarLoop]: Abstraction has 69075 states and 113930 transitions. [2023-11-29 04:27:32,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:27:32,217 INFO L276 IsEmpty]: Start isEmpty. Operand 69075 states and 113930 transitions. [2023-11-29 04:27:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2023-11-29 04:27:32,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:27:32,229 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:32,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 04:27:32,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:27:32,429 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:27:32,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2431237, now seen corresponding path program 1 times [2023-11-29 04:27:32,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:27:32,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252765142] [2023-11-29 04:27:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:32,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:27:32,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:27:32,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374231449] [2023-11-29 04:27:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:32,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:32,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:32,492 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:27:32,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 04:27:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:32,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:27:32,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:27:33,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:27:33,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:27:33,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252765142] [2023-11-29 04:27:33,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:27:33,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374231449] [2023-11-29 04:27:33,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374231449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:27:33,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:27:33,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:27:33,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638364323] [2023-11-29 04:27:33,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:27:33,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:27:33,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:27:33,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:27:33,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:27:33,621 INFO L87 Difference]: Start difference. First operand 69075 states and 113930 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:27:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:27:46,715 INFO L93 Difference]: Finished difference Result 206989 states and 341263 transitions. [2023-11-29 04:27:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:27:46,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 696 [2023-11-29 04:27:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:27:46,974 INFO L225 Difference]: With dead ends: 206989 [2023-11-29 04:27:46,974 INFO L226 Difference]: Without dead ends: 137915 [2023-11-29 04:27:47,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:27:47,068 INFO L413 NwaCegarLoop]: 1096 mSDtfsCounter, 1423 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 3805 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:27:47,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 3805 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:27:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137915 states. [2023-11-29 04:27:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137915 to 68499. [2023-11-29 04:27:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68499 states, 53618 states have (on average 1.601141407736208) internal successors, (85850), 53714 states have internal predecessors, (85850), 13536 states have call successors, (13536), 1344 states have call predecessors, (13536), 1344 states have return successors, (13536), 13440 states have call predecessors, (13536), 13536 states have call successors, (13536) [2023-11-29 04:27:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68499 states to 68499 states and 112922 transitions. [2023-11-29 04:27:57,185 INFO L78 Accepts]: Start accepts. Automaton has 68499 states and 112922 transitions. Word has length 696 [2023-11-29 04:27:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:27:57,186 INFO L495 AbstractCegarLoop]: Abstraction has 68499 states and 112922 transitions. [2023-11-29 04:27:57,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:27:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 68499 states and 112922 transitions. [2023-11-29 04:27:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-29 04:27:57,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:27:57,197 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:27:57,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 04:27:57,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:27:57,397 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:27:57,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:27:57,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2021027363, now seen corresponding path program 1 times [2023-11-29 04:27:57,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:27:57,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750230171] [2023-11-29 04:27:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:57,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:27:57,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:27:57,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810757442] [2023-11-29 04:27:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:27:57,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:27:57,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:27:57,465 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:27:57,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 04:27:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:27:57,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:27:57,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:27:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 108 proven. 324 refuted. 0 times theorem prover too weak. 23112 trivial. 0 not checked. [2023-11-29 04:27:58,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:27:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-29 04:27:59,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:27:59,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750230171] [2023-11-29 04:27:59,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:27:59,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810757442] [2023-11-29 04:27:59,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810757442] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:27:59,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:27:59,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:27:59,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801826403] [2023-11-29 04:27:59,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:27:59,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:27:59,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:27:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:27:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:27:59,182 INFO L87 Difference]: Start difference. First operand 68499 states and 112922 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (217), 2 states have call predecessors, (217), 4 states have return successors, (218), 1 states have call predecessors, (218), 2 states have call successors, (218) [2023-11-29 04:28:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:03,703 INFO L93 Difference]: Finished difference Result 107791 states and 177069 transitions. [2023-11-29 04:28:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:28:03,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (217), 2 states have call predecessors, (217), 4 states have return successors, (218), 1 states have call predecessors, (218), 2 states have call successors, (218) Word has length 697 [2023-11-29 04:28:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:03,781 INFO L225 Difference]: With dead ends: 107791 [2023-11-29 04:28:03,781 INFO L226 Difference]: Without dead ends: 39293 [2023-11-29 04:28:03,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1396 GetRequests, 1386 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:28:03,863 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 193 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:03,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1093 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:28:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39293 states. [2023-11-29 04:28:07,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39293 to 38289. [2023-11-29 04:28:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38289 states, 30627 states have (on average 1.6055767786593529) internal successors, (49174), 30675 states have internal predecessors, (49174), 6877 states have call successors, (6877), 784 states have call predecessors, (6877), 784 states have return successors, (6877), 6829 states have call predecessors, (6877), 6877 states have call successors, (6877) [2023-11-29 04:28:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38289 states to 38289 states and 62928 transitions. [2023-11-29 04:28:07,724 INFO L78 Accepts]: Start accepts. Automaton has 38289 states and 62928 transitions. Word has length 697 [2023-11-29 04:28:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:07,725 INFO L495 AbstractCegarLoop]: Abstraction has 38289 states and 62928 transitions. [2023-11-29 04:28:07,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (217), 2 states have call predecessors, (217), 4 states have return successors, (218), 1 states have call predecessors, (218), 2 states have call successors, (218) [2023-11-29 04:28:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 38289 states and 62928 transitions. [2023-11-29 04:28:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-29 04:28:07,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:07,735 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:07,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 04:28:07,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:28:07,935 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:07,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:07,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1340968993, now seen corresponding path program 1 times [2023-11-29 04:28:07,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:07,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789176974] [2023-11-29 04:28:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:07,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:07,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:28:07,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076878452] [2023-11-29 04:28:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:07,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:28:07,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:28:08,000 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:28:08,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 04:28:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:08,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:28:08,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:28:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 13895 proven. 396 refuted. 0 times theorem prover too weak. 9253 trivial. 0 not checked. [2023-11-29 04:28:09,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:28:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 246 proven. 399 refuted. 0 times theorem prover too weak. 22899 trivial. 0 not checked. [2023-11-29 04:28:10,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789176974] [2023-11-29 04:28:10,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:28:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076878452] [2023-11-29 04:28:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076878452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:28:10,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:28:10,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2023-11-29 04:28:10,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195172904] [2023-11-29 04:28:10,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:28:10,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:28:10,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:10,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:28:10,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:28:10,417 INFO L87 Difference]: Start difference. First operand 38289 states and 62928 transitions. Second operand has 16 states, 16 states have (on average 15.3125) internal successors, (245), 16 states have internal predecessors, (245), 4 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (185), 4 states have call predecessors, (185), 4 states have call successors, (185) [2023-11-29 04:28:21,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:21,558 INFO L93 Difference]: Finished difference Result 122571 states and 199421 transitions. [2023-11-29 04:28:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 04:28:21,559 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.3125) internal successors, (245), 16 states have internal predecessors, (245), 4 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (185), 4 states have call predecessors, (185), 4 states have call successors, (185) Word has length 697 [2023-11-29 04:28:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:21,696 INFO L225 Difference]: With dead ends: 122571 [2023-11-29 04:28:21,696 INFO L226 Difference]: Without dead ends: 85963 [2023-11-29 04:28:21,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1426 GetRequests, 1380 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=651, Invalid=1511, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 04:28:21,738 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 3377 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 1054 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3443 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 3560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1054 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:21,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3443 Valid, 3518 Invalid, 3560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1054 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 04:28:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85963 states. [2023-11-29 04:28:26,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85963 to 30543. [2023-11-29 04:28:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30543 states, 24063 states have (on average 1.5905747413040767) internal successors, (38274), 24075 states have internal predecessors, (38274), 5725 states have call successors, (5725), 754 states have call predecessors, (5725), 754 states have return successors, (5725), 5713 states have call predecessors, (5725), 5725 states have call successors, (5725) [2023-11-29 04:28:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30543 states to 30543 states and 49724 transitions. [2023-11-29 04:28:26,308 INFO L78 Accepts]: Start accepts. Automaton has 30543 states and 49724 transitions. Word has length 697 [2023-11-29 04:28:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:26,309 INFO L495 AbstractCegarLoop]: Abstraction has 30543 states and 49724 transitions. [2023-11-29 04:28:26,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.3125) internal successors, (245), 16 states have internal predecessors, (245), 4 states have call successors, (184), 3 states have call predecessors, (184), 7 states have return successors, (185), 4 states have call predecessors, (185), 4 states have call successors, (185) [2023-11-29 04:28:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 30543 states and 49724 transitions. [2023-11-29 04:28:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-29 04:28:26,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:26,317 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:26,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 04:28:26,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:28:26,518 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:26,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:26,519 INFO L85 PathProgramCache]: Analyzing trace with hash -566475483, now seen corresponding path program 1 times [2023-11-29 04:28:26,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:26,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141397135] [2023-11-29 04:28:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:26,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:26,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:28:26,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714577691] [2023-11-29 04:28:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:26,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:28:26,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:28:26,581 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:28:26,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 04:28:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:27,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:28:27,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:28:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 10824 proven. 210 refuted. 0 times theorem prover too weak. 12510 trivial. 0 not checked. [2023-11-29 04:28:28,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:28:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 114 proven. 210 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-29 04:28:29,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:29,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141397135] [2023-11-29 04:28:29,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:28:29,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714577691] [2023-11-29 04:28:29,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714577691] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:28:29,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:28:29,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-29 04:28:29,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121507238] [2023-11-29 04:28:29,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:28:29,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:28:29,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:29,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:28:29,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:28:29,274 INFO L87 Difference]: Start difference. First operand 30543 states and 49724 transitions. Second operand has 10 states, 10 states have (on average 25.4) internal successors, (254), 10 states have internal predecessors, (254), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) [2023-11-29 04:28:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:28:37,785 INFO L93 Difference]: Finished difference Result 86689 states and 139729 transitions. [2023-11-29 04:28:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:28:37,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 25.4) internal successors, (254), 10 states have internal predecessors, (254), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) Word has length 697 [2023-11-29 04:28:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:28:37,886 INFO L225 Difference]: With dead ends: 86689 [2023-11-29 04:28:37,886 INFO L226 Difference]: Without dead ends: 57017 [2023-11-29 04:28:37,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1398 GetRequests, 1384 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:28:37,925 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 2241 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:28:37,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2279 Valid, 1331 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 04:28:37,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57017 states. [2023-11-29 04:28:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57017 to 50482. [2023-11-29 04:28:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50482 states, 37953 states have (on average 1.5316839248544252) internal successors, (58132), 37965 states have internal predecessors, (58132), 10957 states have call successors, (10957), 1571 states have call predecessors, (10957), 1571 states have return successors, (10957), 10945 states have call predecessors, (10957), 10957 states have call successors, (10957) [2023-11-29 04:28:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50482 states to 50482 states and 80046 transitions. [2023-11-29 04:28:45,848 INFO L78 Accepts]: Start accepts. Automaton has 50482 states and 80046 transitions. Word has length 697 [2023-11-29 04:28:45,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:28:45,848 INFO L495 AbstractCegarLoop]: Abstraction has 50482 states and 80046 transitions. [2023-11-29 04:28:45,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.4) internal successors, (254), 10 states have internal predecessors, (254), 4 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 4 states have call predecessors, (218), 4 states have call successors, (218) [2023-11-29 04:28:45,849 INFO L276 IsEmpty]: Start isEmpty. Operand 50482 states and 80046 transitions. [2023-11-29 04:28:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-11-29 04:28:45,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:28:45,858 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:28:45,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 04:28:46,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:28:46,059 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:28:46,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:28:46,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1310344549, now seen corresponding path program 1 times [2023-11-29 04:28:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:28:46,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974466303] [2023-11-29 04:28:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:46,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:28:46,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:28:46,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904466262] [2023-11-29 04:28:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:28:46,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:28:46,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:28:46,124 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:28:46,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 04:28:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:28:46,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:28:46,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:28:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11230 proven. 123 refuted. 0 times theorem prover too weak. 12191 trivial. 0 not checked. [2023-11-29 04:28:47,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:28:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 201 proven. 123 refuted. 0 times theorem prover too weak. 23220 trivial. 0 not checked. [2023-11-29 04:28:47,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:28:47,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974466303] [2023-11-29 04:28:47,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:28:47,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904466262] [2023-11-29 04:28:47,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904466262] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:28:47,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:28:47,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 04:28:47,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221116984] [2023-11-29 04:28:47,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:28:47,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:28:47,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:28:47,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:28:47,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:28:47,665 INFO L87 Difference]: Start difference. First operand 50482 states and 80046 transitions. Second operand has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 12 states have internal predecessors, (263), 3 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) [2023-11-29 04:29:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:08,103 INFO L93 Difference]: Finished difference Result 169192 states and 263924 transitions. [2023-11-29 04:29:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:29:08,104 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 12 states have internal predecessors, (263), 3 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) Word has length 697 [2023-11-29 04:29:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:08,358 INFO L225 Difference]: With dead ends: 169192 [2023-11-29 04:29:08,358 INFO L226 Difference]: Without dead ends: 121238 [2023-11-29 04:29:08,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1406 GetRequests, 1383 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2023-11-29 04:29:08,424 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1168 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:08,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1300 Valid, 2856 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:29:08,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121238 states. [2023-11-29 04:29:17,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121238 to 66908. [2023-11-29 04:29:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66908 states, 54282 states have (on average 1.5908220036107734) internal successors, (86353), 54294 states have internal predecessors, (86353), 10957 states have call successors, (10957), 1668 states have call predecessors, (10957), 1668 states have return successors, (10957), 10945 states have call predecessors, (10957), 10957 states have call successors, (10957) [2023-11-29 04:29:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66908 states to 66908 states and 108267 transitions. [2023-11-29 04:29:17,977 INFO L78 Accepts]: Start accepts. Automaton has 66908 states and 108267 transitions. Word has length 697 [2023-11-29 04:29:17,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:29:17,978 INFO L495 AbstractCegarLoop]: Abstraction has 66908 states and 108267 transitions. [2023-11-29 04:29:17,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.916666666666668) internal successors, (263), 12 states have internal predecessors, (263), 3 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) [2023-11-29 04:29:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand 66908 states and 108267 transitions. [2023-11-29 04:29:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-29 04:29:17,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:29:17,989 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:29:17,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 04:29:18,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:29:18,189 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:29:18,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:29:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1722115272, now seen corresponding path program 1 times [2023-11-29 04:29:18,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:29:18,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851336784] [2023-11-29 04:29:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:18,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:29:18,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:29:18,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272952596] [2023-11-29 04:29:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:29:18,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:29:18,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:29:18,242 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:29:18,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 04:29:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:29:18,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 04:29:18,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:29:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 12874 proven. 675 refuted. 0 times theorem prover too weak. 9995 trivial. 0 not checked. [2023-11-29 04:29:22,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:29:28,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:29:28,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851336784] [2023-11-29 04:29:28,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:29:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272952596] [2023-11-29 04:29:28,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272952596] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:29:28,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:29:28,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-29 04:29:28,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140446908] [2023-11-29 04:29:28,632 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:29:28,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:29:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:29:28,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:29:28,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=677, Unknown=1, NotChecked=0, Total=870 [2023-11-29 04:29:28,634 INFO L87 Difference]: Start difference. First operand 66908 states and 108267 transitions. Second operand has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 17 states have internal predecessors, (177), 6 states have call successors, (109), 6 states have call predecessors, (109), 8 states have return successors, (109), 6 states have call predecessors, (109), 6 states have call successors, (109) [2023-11-29 04:29:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:29:52,511 INFO L93 Difference]: Finished difference Result 164352 states and 258864 transitions. [2023-11-29 04:29:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 04:29:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 17 states have internal predecessors, (177), 6 states have call successors, (109), 6 states have call predecessors, (109), 8 states have return successors, (109), 6 states have call predecessors, (109), 6 states have call successors, (109) Word has length 698 [2023-11-29 04:29:52,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:29:52,691 INFO L225 Difference]: With dead ends: 164352 [2023-11-29 04:29:52,692 INFO L226 Difference]: Without dead ends: 101794 [2023-11-29 04:29:52,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1098 GetRequests, 1032 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1215 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1102, Invalid=3453, Unknown=1, NotChecked=0, Total=4556 [2023-11-29 04:29:52,754 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 1920 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:29:52,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1980 Valid, 2536 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 04:29:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101794 states. [2023-11-29 04:30:00,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101794 to 39673. [2023-11-29 04:30:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39673 states, 33300 states have (on average 1.602972972972973) internal successors, (53379), 33300 states have internal predecessors, (53379), 5341 states have call successors, (5341), 1031 states have call predecessors, (5341), 1031 states have return successors, (5341), 5341 states have call predecessors, (5341), 5341 states have call successors, (5341) [2023-11-29 04:30:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39673 states to 39673 states and 64061 transitions. [2023-11-29 04:30:00,282 INFO L78 Accepts]: Start accepts. Automaton has 39673 states and 64061 transitions. Word has length 698 [2023-11-29 04:30:00,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:30:00,283 INFO L495 AbstractCegarLoop]: Abstraction has 39673 states and 64061 transitions. [2023-11-29 04:30:00,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 17 states have internal predecessors, (177), 6 states have call successors, (109), 6 states have call predecessors, (109), 8 states have return successors, (109), 6 states have call predecessors, (109), 6 states have call successors, (109) [2023-11-29 04:30:00,283 INFO L276 IsEmpty]: Start isEmpty. Operand 39673 states and 64061 transitions. [2023-11-29 04:30:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-11-29 04:30:00,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:30:00,293 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:30:00,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 04:30:00,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:30:00,494 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:30:00,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:30:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1974465283, now seen corresponding path program 1 times [2023-11-29 04:30:00,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:30:00,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743255940] [2023-11-29 04:30:00,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:30:00,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:30:00,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:30:00,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986869800] [2023-11-29 04:30:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:30:00,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:30:00,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:30:00,548 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:30:00,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:30:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:30:02,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:30:02,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:30:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 13589 proven. 780 refuted. 0 times theorem prover too weak. 9175 trivial. 0 not checked. [2023-11-29 04:30:19,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:30:37,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:30:37,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743255940] [2023-11-29 04:30:37,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:30:37,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986869800] [2023-11-29 04:30:37,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986869800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:30:37,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:30:37,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-29 04:30:37,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802115748] [2023-11-29 04:30:37,403 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:30:37,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 04:30:37,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:30:37,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:30:37,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=481, Unknown=7, NotChecked=0, Total=600 [2023-11-29 04:30:37,406 INFO L87 Difference]: Start difference. First operand 39673 states and 64061 transitions. Second operand has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 18 states have internal predecessors, (177), 5 states have call successors, (109), 5 states have call predecessors, (109), 8 states have return successors, (109), 5 states have call predecessors, (109), 5 states have call successors, (109) [2023-11-29 04:30:46,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:30:54,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:31:02,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:31:06,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:31:10,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 04:31:11,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 139 [2023-11-29 04:31:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 04:31:11,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=219, Invalid=896, Unknown=7, NotChecked=0, Total=1122 [2023-11-29 04:31:11,506 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 205 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 238 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:31:11,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 1031 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2029 Invalid, 5 Unknown, 0 Unchecked, 24.5s Time] [2023-11-29 04:31:11,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 04:31:11,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:31:11,707 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 47 more [2023-11-29 04:31:11,711 INFO L158 Benchmark]: Toolchain (without parser) took 294720.66ms. Allocated memory was 153.1MB in the beginning and 6.6GB in the end (delta: 6.4GB). Free memory was 117.4MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2023-11-29 04:31:11,711 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:31:11,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 533.19ms. Allocated memory is still 153.1MB. Free memory was 117.4MB in the beginning and 84.7MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-29 04:31:11,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 154.68ms. Allocated memory is still 153.1MB. Free memory was 84.7MB in the beginning and 112.5MB in the end (delta: -27.8MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2023-11-29 04:31:11,712 INFO L158 Benchmark]: Boogie Preprocessor took 167.61ms. Allocated memory is still 153.1MB. Free memory was 112.5MB in the beginning and 95.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:31:11,712 INFO L158 Benchmark]: RCFGBuilder took 1443.22ms. Allocated memory was 153.1MB in the beginning and 190.8MB in the end (delta: 37.7MB). Free memory was 94.4MB in the beginning and 89.3MB in the end (delta: 5.1MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2023-11-29 04:31:11,713 INFO L158 Benchmark]: TraceAbstraction took 292414.59ms. Allocated memory was 190.8MB in the beginning and 6.6GB in the end (delta: 6.4GB). Free memory was 88.3MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2023-11-29 04:31:11,714 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 533.19ms. Allocated memory is still 153.1MB. Free memory was 117.4MB in the beginning and 84.7MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 154.68ms. Allocated memory is still 153.1MB. Free memory was 84.7MB in the beginning and 112.5MB in the end (delta: -27.8MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 167.61ms. Allocated memory is still 153.1MB. Free memory was 112.5MB in the beginning and 95.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 1443.22ms. Allocated memory was 153.1MB in the beginning and 190.8MB in the end (delta: 37.7MB). Free memory was 94.4MB in the beginning and 89.3MB in the end (delta: 5.1MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * TraceAbstraction took 292414.59ms. Allocated memory was 190.8MB in the beginning and 6.6GB in the end (delta: 6.4GB). Free memory was 88.3MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya --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 69a106a7fe4e968f8159960741f93feca1d4d684a8ecc183635291d7b7b9ab5b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:31:13,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:31:13,993 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 04:31:14,015 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:31:14,016 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:31:14,046 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:31:14,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:31:14,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:31:14,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:31:14,049 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:31:14,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:31:14,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:31:14,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:31:14,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:31:14,053 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:31:14,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:31:14,054 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:31:14,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:31:14,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:31:14,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:31:14,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:31:14,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:31:14,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:31:14,058 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:31:14,058 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:31:14,059 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:31:14,059 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:31:14,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:31:14,060 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:31:14,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:31:14,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:31:14,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:31:14,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:31:14,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:31:14,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:31:14,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:31:14,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:31:14,063 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:31:14,064 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:31:14,064 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:31:14,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:31:14,064 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:31:14,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:31:14,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:31:14,065 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:31:14,065 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69a106a7fe4e968f8159960741f93feca1d4d684a8ecc183635291d7b7b9ab5b [2023-11-29 04:31:14,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:31:14,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:31:14,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:31:14,407 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:31:14,408 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:31:14,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2023-11-29 04:31:17,264 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:31:17,539 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:31:17,539 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2023-11-29 04:31:17,556 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/data/ba9fbeded/8b91623587834c3b909508880659e540/FLAG63dec5b4e [2023-11-29 04:31:17,570 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/data/ba9fbeded/8b91623587834c3b909508880659e540 [2023-11-29 04:31:17,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:31:17,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:31:17,576 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:31:17,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:31:17,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:31:17,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:31:17" (1/1) ... [2023-11-29 04:31:17,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1672caf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:17, skipping insertion in model container [2023-11-29 04:31:17,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:31:17" (1/1) ... [2023-11-29 04:31:17,645 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:31:17,777 WARN L240 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_4d34c01e-6f48-4237-a23e-68544b18882d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i[916,929] [2023-11-29 04:31:17,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:31:17,988 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:31:17,999 WARN L240 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_4d34c01e-6f48-4237-a23e-68544b18882d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-38.i[916,929] [2023-11-29 04:31:18,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:31:18,112 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:31:18,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18 WrapperNode [2023-11-29 04:31:18,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:31:18,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:31:18,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:31:18,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:31:18,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,151 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,221 INFO L138 Inliner]: procedures = 27, calls = 122, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 699 [2023-11-29 04:31:18,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:31:18,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:31:18,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:31:18,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:31:18,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,307 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]. [2023-11-29 04:31:18,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:31:18,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:31:18,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:31:18,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:31:18,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (1/1) ... [2023-11-29 04:31:18,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:31:18,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:31:18,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:31:18,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:31:18,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:31:18,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:31:18,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:31:18,445 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:31:18,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:31:18,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:31:18,605 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:31:18,610 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:31:59,356 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:31:59,431 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:31:59,431 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:31:59,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:31:59 BoogieIcfgContainer [2023-11-29 04:31:59,432 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:31:59,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:31:59,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:31:59,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:31:59,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:31:17" (1/3) ... [2023-11-29 04:31:59,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748ff506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:31:59, skipping insertion in model container [2023-11-29 04:31:59,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:31:18" (2/3) ... [2023-11-29 04:31:59,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748ff506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:31:59, skipping insertion in model container [2023-11-29 04:31:59,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:31:59" (3/3) ... [2023-11-29 04:31:59,440 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-38.i [2023-11-29 04:31:59,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:31:59,456 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:31:59,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:31:59,515 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7de5a8a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:31:59,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:31:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 191 states have (on average 1.5863874345549738) internal successors, (303), 192 states have internal predecessors, (303), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-29 04:31:59,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 04:31:59,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:31:59,572 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:31:59,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:31:59,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:31:59,578 INFO L85 PathProgramCache]: Analyzing trace with hash -904039680, now seen corresponding path program 1 times [2023-11-29 04:31:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:31:59,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788927898] [2023-11-29 04:31:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:31:59,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:31:59,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:31:59,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:31:59,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 04:32:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:03,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:32:03,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 9576 proven. 0 refuted. 0 times theorem prover too weak. 13968 trivial. 0 not checked. [2023-11-29 04:32:03,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:32:03,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:03,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788927898] [2023-11-29 04:32:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788927898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:32:03,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:32:03,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:32:03,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240667677] [2023-11-29 04:32:03,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:32:03,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:32:03,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:03,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:32:03,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:32:03,454 INFO L87 Difference]: Start difference. First operand has 303 states, 191 states have (on average 1.5863874345549738) internal successors, (303), 192 states have internal predecessors, (303), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-29 04:32:07,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:32:07,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:32:07,833 INFO L93 Difference]: Finished difference Result 603 states and 1149 transitions. [2023-11-29 04:32:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:32:07,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 685 [2023-11-29 04:32:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:32:07,890 INFO L225 Difference]: With dead ends: 603 [2023-11-29 04:32:07,890 INFO L226 Difference]: Without dead ends: 301 [2023-11-29 04:32:07,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:32:07,900 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:32:07,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 04:32:07,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-29 04:32:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2023-11-29 04:32:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 190 states have (on average 1.5526315789473684) internal successors, (295), 190 states have internal predecessors, (295), 109 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-29 04:32:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 513 transitions. [2023-11-29 04:32:07,992 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 513 transitions. Word has length 685 [2023-11-29 04:32:07,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:32:07,993 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 513 transitions. [2023-11-29 04:32:07,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-29 04:32:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 513 transitions. [2023-11-29 04:32:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 04:32:08,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:32:08,014 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:32:08,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:32:08,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:32:08,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:32:08,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1624137230, now seen corresponding path program 1 times [2023-11-29 04:32:08,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:08,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784628051] [2023-11-29 04:32:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:08,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:32:08,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:08,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:32:08,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 04:32:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:11,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:32:11,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11695 proven. 381 refuted. 0 times theorem prover too weak. 11468 trivial. 0 not checked. [2023-11-29 04:32:26,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:32:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 261 proven. 384 refuted. 0 times theorem prover too weak. 22899 trivial. 0 not checked. [2023-11-29 04:32:32,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:32:32,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784628051] [2023-11-29 04:32:32,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784628051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:32:32,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:32:32,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 04:32:32,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187426427] [2023-11-29 04:32:32,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:32:32,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:32:32,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:32:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:32:32,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:32:32,230 INFO L87 Difference]: Start difference. First operand 301 states and 513 transitions. Second operand has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 3 states have call successors, (174), 3 states have call predecessors, (174), 7 states have return successors, (175), 3 states have call predecessors, (175), 3 states have call successors, (175) [2023-11-29 04:32:49,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:32:51,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:32:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:32:51,304 INFO L93 Difference]: Finished difference Result 610 states and 1027 transitions. [2023-11-29 04:32:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:32:51,362 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 3 states have call successors, (174), 3 states have call predecessors, (174), 7 states have return successors, (175), 3 states have call predecessors, (175), 3 states have call successors, (175) Word has length 685 [2023-11-29 04:32:51,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:32:51,369 INFO L225 Difference]: With dead ends: 610 [2023-11-29 04:32:51,369 INFO L226 Difference]: Without dead ends: 310 [2023-11-29 04:32:51,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1383 GetRequests, 1357 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:32:51,372 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 992 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 658 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:32:51,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 1325 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 1066 Invalid, 1 Unknown, 0 Unchecked, 17.6s Time] [2023-11-29 04:32:51,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-29 04:32:51,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 304. [2023-11-29 04:32:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 191 states have (on average 1.450261780104712) internal successors, (277), 191 states have internal predecessors, (277), 109 states have call successors, (109), 3 states have call predecessors, (109), 3 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2023-11-29 04:32:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 495 transitions. [2023-11-29 04:32:51,462 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 495 transitions. Word has length 685 [2023-11-29 04:32:51,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:32:51,465 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 495 transitions. [2023-11-29 04:32:51,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 3 states have call successors, (174), 3 states have call predecessors, (174), 7 states have return successors, (175), 3 states have call predecessors, (175), 3 states have call successors, (175) [2023-11-29 04:32:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 495 transitions. [2023-11-29 04:32:51,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 04:32:51,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:32:51,475 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:32:51,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 04:32:51,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:32:51,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:32:51,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:32:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash 934473394, now seen corresponding path program 1 times [2023-11-29 04:32:51,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:32:51,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297405033] [2023-11-29 04:32:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:32:51,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:32:51,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:32:51,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:32:51,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 04:32:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:32:55,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:32:55,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:32:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2023-11-29 04:32:59,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:33:00,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:33:00,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297405033] [2023-11-29 04:33:00,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297405033] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:33:00,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [661565100] [2023-11-29 04:33:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:00,433 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:33:00,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:33:00,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:33:00,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-29 04:33:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:02,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:33:02,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:33:03,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:33:03,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [661565100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:33:03,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:33:03,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 04:33:03,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443548473] [2023-11-29 04:33:03,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:33:03,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:33:03,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:33:03,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:33:03,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:33:03,154 INFO L87 Difference]: Start difference. First operand 304 states and 495 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:33:07,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:33:11,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:33:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:33:11,708 INFO L93 Difference]: Finished difference Result 819 states and 1322 transitions. [2023-11-29 04:33:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:33:11,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 685 [2023-11-29 04:33:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:33:11,716 INFO L225 Difference]: With dead ends: 819 [2023-11-29 04:33:11,717 INFO L226 Difference]: Without dead ends: 516 [2023-11-29 04:33:11,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1444 GetRequests, 1439 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:33:11,719 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 320 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:33:11,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 963 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2023-11-29 04:33:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-29 04:33:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 513. [2023-11-29 04:33:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 290 states have (on average 1.3551724137931034) internal successors, (393), 291 states have internal predecessors, (393), 216 states have call successors, (216), 6 states have call predecessors, (216), 6 states have return successors, (216), 215 states have call predecessors, (216), 216 states have call successors, (216) [2023-11-29 04:33:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 825 transitions. [2023-11-29 04:33:11,814 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 825 transitions. Word has length 685 [2023-11-29 04:33:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:33:11,816 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 825 transitions. [2023-11-29 04:33:11,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:33:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 825 transitions. [2023-11-29 04:33:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 04:33:11,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:33:11,824 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:33:11,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-11-29 04:33:12,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 04:33:12,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:33:12,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:33:12,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:12,226 INFO L85 PathProgramCache]: Analyzing trace with hash -653874508, now seen corresponding path program 1 times [2023-11-29 04:33:12,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:33:12,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974707523] [2023-11-29 04:33:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:12,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:33:12,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:33:12,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:33:12,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 04:33:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:15,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:33:15,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2023-11-29 04:33:20,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:33:20,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:33:20,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974707523] [2023-11-29 04:33:20,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974707523] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:33:20,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [422883737] [2023-11-29 04:33:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:20,852 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:33:20,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:33:20,853 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:33:20,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-29 04:33:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:23,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:33:23,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:33:23,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:33:23,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [422883737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:33:23,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:33:23,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 04:33:23,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299913811] [2023-11-29 04:33:23,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:33:23,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:33:23,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:33:23,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:33:23,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:33:23,506 INFO L87 Difference]: Start difference. First operand 513 states and 825 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:33:27,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:33:29,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:33:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:33:29,989 INFO L93 Difference]: Finished difference Result 1338 states and 2154 transitions. [2023-11-29 04:33:29,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:33:29,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 685 [2023-11-29 04:33:29,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:33:29,998 INFO L225 Difference]: With dead ends: 1338 [2023-11-29 04:33:29,998 INFO L226 Difference]: Without dead ends: 826 [2023-11-29 04:33:30,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1444 GetRequests, 1439 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:33:30,001 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 481 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:33:30,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1413 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 04:33:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-11-29 04:33:30,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 824. [2023-11-29 04:33:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 488 states have (on average 1.3790983606557377) internal successors, (673), 489 states have internal predecessors, (673), 325 states have call successors, (325), 10 states have call predecessors, (325), 10 states have return successors, (325), 324 states have call predecessors, (325), 325 states have call successors, (325) [2023-11-29 04:33:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1323 transitions. [2023-11-29 04:33:30,161 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1323 transitions. Word has length 685 [2023-11-29 04:33:30,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:33:30,162 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1323 transitions. [2023-11-29 04:33:30,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:33:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1323 transitions. [2023-11-29 04:33:30,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 04:33:30,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:33:30,170 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:33:30,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-11-29 04:33:30,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 04:33:30,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:33:30,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:33:30,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:30,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1240680522, now seen corresponding path program 1 times [2023-11-29 04:33:30,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:33:30,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705602808] [2023-11-29 04:33:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:30,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:33:30,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:33:30,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:33:30,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 04:33:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:33,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:33:33,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2023-11-29 04:33:37,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:33:38,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:33:38,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705602808] [2023-11-29 04:33:38,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705602808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:33:38,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1942523880] [2023-11-29 04:33:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:38,394 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:33:38,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:33:38,395 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:33:38,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-29 04:33:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:40,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:33:40,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:33:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:33:51,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:33:51,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1942523880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:33:51,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:33:51,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 04:33:51,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669319490] [2023-11-29 04:33:51,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:33:51,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:33:51,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:33:51,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:33:51,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:33:51,660 INFO L87 Difference]: Start difference. First operand 824 states and 1323 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:33:55,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:33:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:33:55,592 INFO L93 Difference]: Finished difference Result 1338 states and 2142 transitions. [2023-11-29 04:33:55,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:33:55,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 685 [2023-11-29 04:33:55,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:33:55,599 INFO L225 Difference]: With dead ends: 1338 [2023-11-29 04:33:55,599 INFO L226 Difference]: Without dead ends: 826 [2023-11-29 04:33:55,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1444 GetRequests, 1439 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:33:55,602 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 139 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:33:55,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 961 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 04:33:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-11-29 04:33:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 824. [2023-11-29 04:33:55,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 488 states have (on average 1.375) internal successors, (671), 489 states have internal predecessors, (671), 325 states have call successors, (325), 10 states have call predecessors, (325), 10 states have return successors, (325), 324 states have call predecessors, (325), 325 states have call successors, (325) [2023-11-29 04:33:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1321 transitions. [2023-11-29 04:33:55,752 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1321 transitions. Word has length 685 [2023-11-29 04:33:55,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:33:55,754 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1321 transitions. [2023-11-29 04:33:55,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:33:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1321 transitions. [2023-11-29 04:33:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 04:33:55,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:33:55,762 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:33:55,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-11-29 04:33:56,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 04:33:56,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:33:56,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:33:56,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:33:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 367193846, now seen corresponding path program 1 times [2023-11-29 04:33:56,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:33:56,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543603670] [2023-11-29 04:33:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:33:56,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:33:56,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:33:56,166 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:33:56,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 04:33:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:33:59,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:33:59,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2023-11-29 04:34:03,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:04,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:34:04,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543603670] [2023-11-29 04:34:04,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543603670] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:34:04,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1657683201] [2023-11-29 04:34:04,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:04,386 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:34:04,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:34:04,387 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:34:04,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-29 04:34:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:06,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:34:06,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:34:07,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:34:07,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1657683201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:07,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:34:07,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-29 04:34:07,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146843439] [2023-11-29 04:34:07,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:07,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:34:07,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:34:07,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:34:07,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:34:07,296 INFO L87 Difference]: Start difference. First operand 824 states and 1321 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:34:12,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:34:15,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:34:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:34:16,292 INFO L93 Difference]: Finished difference Result 2484 states and 3985 transitions. [2023-11-29 04:34:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:34:16,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 685 [2023-11-29 04:34:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:34:16,309 INFO L225 Difference]: With dead ends: 2484 [2023-11-29 04:34:16,309 INFO L226 Difference]: Without dead ends: 1661 [2023-11-29 04:34:16,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1444 GetRequests, 1438 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:34:16,314 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 736 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:34:16,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1409 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2023-11-29 04:34:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2023-11-29 04:34:16,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1645. [2023-11-29 04:34:16,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 974 states have (on average 1.3726899383983573) internal successors, (1337), 976 states have internal predecessors, (1337), 650 states have call successors, (650), 20 states have call predecessors, (650), 20 states have return successors, (650), 648 states have call predecessors, (650), 650 states have call successors, (650) [2023-11-29 04:34:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2637 transitions. [2023-11-29 04:34:16,821 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2637 transitions. Word has length 685 [2023-11-29 04:34:16,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:34:16,822 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 2637 transitions. [2023-11-29 04:34:16,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:34:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2637 transitions. [2023-11-29 04:34:16,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 04:34:16,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:34:16,830 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:16,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 04:34:17,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-11-29 04:34:17,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:34:17,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:34:17,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash -643923404, now seen corresponding path program 1 times [2023-11-29 04:34:17,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:34:17,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135903942] [2023-11-29 04:34:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:17,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:34:17,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:34:17,235 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:34:17,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 04:34:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:20,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:34:20,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2023-11-29 04:34:24,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:25,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:34:25,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135903942] [2023-11-29 04:34:25,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135903942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:34:25,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1139880952] [2023-11-29 04:34:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:25,350 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:34:25,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:34:25,351 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:34:25,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-29 04:34:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:32,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:34:32,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:34:33,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:34:33,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1139880952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:34:33,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:34:33,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 04:34:33,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257681487] [2023-11-29 04:34:33,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:34:33,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:34:33,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:34:33,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:34:33,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:34:33,676 INFO L87 Difference]: Start difference. First operand 1645 states and 2637 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:34:38,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 04:34:40,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:34:41,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:34:41,261 INFO L93 Difference]: Finished difference Result 4933 states and 7909 transitions. [2023-11-29 04:34:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:34:41,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 685 [2023-11-29 04:34:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:34:41,290 INFO L225 Difference]: With dead ends: 4933 [2023-11-29 04:34:41,290 INFO L226 Difference]: Without dead ends: 3289 [2023-11-29 04:34:41,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1444 GetRequests, 1439 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:34:41,299 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 444 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:34:41,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 958 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2023-11-29 04:34:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2023-11-29 04:34:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3287. [2023-11-29 04:34:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 1946 states have (on average 1.3710174717368961) internal successors, (2668), 1950 states have internal predecessors, (2668), 1300 states have call successors, (1300), 40 states have call predecessors, (1300), 40 states have return successors, (1300), 1296 states have call predecessors, (1300), 1300 states have call successors, (1300) [2023-11-29 04:34:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 5268 transitions. [2023-11-29 04:34:42,194 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 5268 transitions. Word has length 685 [2023-11-29 04:34:42,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:34:42,195 INFO L495 AbstractCegarLoop]: Abstraction has 3287 states and 5268 transitions. [2023-11-29 04:34:42,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:34:42,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 5268 transitions. [2023-11-29 04:34:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 04:34:42,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:34:42,205 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:34:42,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-11-29 04:34:42,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 04:34:42,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:34:42,606 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:34:42,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:34:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash -503374794, now seen corresponding path program 1 times [2023-11-29 04:34:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:34:42,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465310267] [2023-11-29 04:34:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:42,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:34:42,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:34:42,610 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:34:42,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 04:34:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:45,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:34:45,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:34:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2023-11-29 04:34:50,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:34:50,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:34:50,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465310267] [2023-11-29 04:34:50,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465310267] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:34:50,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [140932762] [2023-11-29 04:34:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:34:50,849 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:34:50,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:34:50,850 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:34:50,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-11-29 04:34:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:34:52,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:34:52,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:35:03,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:35:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [140932762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:35:03,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:35:03,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-29 04:35:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731133609] [2023-11-29 04:35:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:35:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:35:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:35:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:35:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:35:03,853 INFO L87 Difference]: Start difference. First operand 3287 states and 5268 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:35:07,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.93s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:35:08,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:35:08,486 INFO L93 Difference]: Finished difference Result 9843 states and 15770 transitions. [2023-11-29 04:35:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:35:08,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 685 [2023-11-29 04:35:08,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:35:08,523 INFO L225 Difference]: With dead ends: 9843 [2023-11-29 04:35:08,523 INFO L226 Difference]: Without dead ends: 6557 [2023-11-29 04:35:08,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1444 GetRequests, 1439 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:35:08,533 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 148 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:35:08,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 968 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 04:35:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2023-11-29 04:35:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 6555. [2023-11-29 04:35:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6555 states, 3874 states have (on average 1.36654620547238) internal successors, (5294), 3882 states have internal predecessors, (5294), 2600 states have call successors, (2600), 80 states have call predecessors, (2600), 80 states have return successors, (2600), 2592 states have call predecessors, (2600), 2600 states have call successors, (2600) [2023-11-29 04:35:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6555 states to 6555 states and 10494 transitions. [2023-11-29 04:35:10,321 INFO L78 Accepts]: Start accepts. Automaton has 6555 states and 10494 transitions. Word has length 685 [2023-11-29 04:35:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:35:10,322 INFO L495 AbstractCegarLoop]: Abstraction has 6555 states and 10494 transitions. [2023-11-29 04:35:10,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:35:10,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6555 states and 10494 transitions. [2023-11-29 04:35:10,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-29 04:35:10,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:35:10,332 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:10,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2023-11-29 04:35:10,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 04:35:10,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:35:10,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:35:10,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:10,744 INFO L85 PathProgramCache]: Analyzing trace with hash -284520076, now seen corresponding path program 1 times [2023-11-29 04:35:10,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:35:10,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458139060] [2023-11-29 04:35:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:10,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:35:10,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:35:10,748 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:35:10,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 04:35:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:13,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:35:13,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2023-11-29 04:35:18,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:35:18,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:35:18,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458139060] [2023-11-29 04:35:18,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458139060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:35:18,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1290260843] [2023-11-29 04:35:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:18,904 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:35:18,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:35:18,906 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:35:18,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-11-29 04:35:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:26,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:35:26,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:35:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23544 trivial. 0 not checked. [2023-11-29 04:35:38,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:35:38,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1290260843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:35:38,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:35:38,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 04:35:38,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741680935] [2023-11-29 04:35:38,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:35:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:35:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:35:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:35:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:35:38,308 INFO L87 Difference]: Start difference. First operand 6555 states and 10494 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:35:43,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:35:48,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:35:50,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:35:51,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:35:51,291 INFO L93 Difference]: Finished difference Result 26621 states and 42563 transitions. [2023-11-29 04:35:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:35:51,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) Word has length 685 [2023-11-29 04:35:51,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:35:51,383 INFO L225 Difference]: With dead ends: 26621 [2023-11-29 04:35:51,383 INFO L226 Difference]: Without dead ends: 20067 [2023-11-29 04:35:51,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1447 GetRequests, 1437 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:35:51,406 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 889 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 219 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:35:51,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 2876 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2023-11-29 04:35:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20067 states. [2023-11-29 04:35:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20067 to 13107. [2023-11-29 04:35:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13107 states, 7746 states have (on average 1.3635424735347277) internal successors, (10562), 7762 states have internal predecessors, (10562), 5200 states have call successors, (5200), 160 states have call predecessors, (5200), 160 states have return successors, (5200), 5184 states have call predecessors, (5200), 5200 states have call successors, (5200) [2023-11-29 04:35:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13107 states to 13107 states and 20962 transitions. [2023-11-29 04:35:55,587 INFO L78 Accepts]: Start accepts. Automaton has 13107 states and 20962 transitions. Word has length 685 [2023-11-29 04:35:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:35:55,588 INFO L495 AbstractCegarLoop]: Abstraction has 13107 states and 20962 transitions. [2023-11-29 04:35:55,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (109), 1 states have call predecessors, (109), 1 states have return successors, (109), 1 states have call predecessors, (109), 1 states have call successors, (109) [2023-11-29 04:35:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 13107 states and 20962 transitions. [2023-11-29 04:35:55,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-11-29 04:35:55,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:35:55,594 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:35:55,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 04:35:55,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-11-29 04:35:55,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:35:55,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:35:55,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:35:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash 672618507, now seen corresponding path program 1 times [2023-11-29 04:35:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:35:55,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296507516] [2023-11-29 04:35:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:35:55,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:35:55,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:35:55,998 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:35:55,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 04:35:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:35:59,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:35:59,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2023-11-29 04:36:03,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:36:04,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:36:04,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296507516] [2023-11-29 04:36:04,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296507516] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:04,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [328930653] [2023-11-29 04:36:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:04,394 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:36:04,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:36:04,395 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:36:04,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-11-29 04:36:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:14,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:36:14,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:36:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 23544 backedges. 11124 proven. 120 refuted. 0 times theorem prover too weak. 12300 trivial. 0 not checked. [2023-11-29 04:36:19,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:36:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [328930653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:36:19,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:36:19,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-29 04:36:19,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462812257] [2023-11-29 04:36:19,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:36:19,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:36:19,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:36:19,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:36:19,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:36:19,564 INFO L87 Difference]: Start difference. First operand 13107 states and 20962 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (109), 2 states have call predecessors, (109), 3 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-29 04:36:28,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:36:32,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 04:36:33,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:36:33,764 INFO L93 Difference]: Finished difference Result 26725 states and 42387 transitions. [2023-11-29 04:36:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:36:33,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (109), 2 states have call predecessors, (109), 3 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 686 [2023-11-29 04:36:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:36:33,870 INFO L225 Difference]: With dead ends: 26725 [2023-11-29 04:36:33,870 INFO L226 Difference]: Without dead ends: 13619 [2023-11-29 04:36:33,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1529 GetRequests, 1521 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:36:33,915 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 290 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:36:33,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 866 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 570 Invalid, 1 Unknown, 0 Unchecked, 12.6s Time] [2023-11-29 04:36:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13619 states. [2023-11-29 04:36:36,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13619 to 13299. [2023-11-29 04:36:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13299 states, 7890 states have (on average 1.352851711026616) internal successors, (10674), 7906 states have internal predecessors, (10674), 5200 states have call successors, (5200), 208 states have call predecessors, (5200), 208 states have return successors, (5200), 5184 states have call predecessors, (5200), 5200 states have call successors, (5200) [2023-11-29 04:36:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13299 states to 13299 states and 21074 transitions. [2023-11-29 04:36:36,859 INFO L78 Accepts]: Start accepts. Automaton has 13299 states and 21074 transitions. Word has length 686 [2023-11-29 04:36:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:36:36,859 INFO L495 AbstractCegarLoop]: Abstraction has 13299 states and 21074 transitions. [2023-11-29 04:36:36,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (109), 2 states have call predecessors, (109), 3 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-29 04:36:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 13299 states and 21074 transitions. [2023-11-29 04:36:36,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-11-29 04:36:36,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:36:36,866 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:36:36,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2023-11-29 04:36:37,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-29 04:36:37,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:36:37,267 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:36:37,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:36:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1116519181, now seen corresponding path program 1 times [2023-11-29 04:36:37,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:36:37,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874140334] [2023-11-29 04:36:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:36:37,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:36:37,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:36:37,270 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:36:37,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d34c01e-6f48-4237-a23e-68544b18882d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 04:36:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:36:40,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:36:40,517 INFO L285 TraceCheckSpWp]: Computing forward predicates...