./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC --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 7af22c4985483bd6c8caf866cf1f41c10246f5959d956f77eec260fff7ae1f47 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:10:33,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:10:33,106 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:10:33,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:10:33,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:10:33,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:10:33,151 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:10:33,152 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:10:33,152 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:10:33,153 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:10:33,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:10:33,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:10:33,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:10:33,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:10:33,155 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:10:33,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:10:33,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:10:33,155 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:10:33,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:10:33,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:10:33,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:10:33,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:10:33,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:10:33,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:10:33,157 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:10:33,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:10:33,157 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:10:33,157 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:10:33,157 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:10:33,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:10:33,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:10:33,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:10:33,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:10:33,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:10:33,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:10:33,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:10:33,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:10:33,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:10:33,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:10:33,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:10:33,160 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:10:33,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:10:33,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:10:33,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:10:33,161 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:10:33,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:10:33,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:10:33,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:10:33,161 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC 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 -> 7af22c4985483bd6c8caf866cf1f41c10246f5959d956f77eec260fff7ae1f47 [2024-11-24 01:10:33,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:10:33,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:10:33,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:10:33,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:10:33,458 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:10:33,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i [2024-11-24 01:10:36,394 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/data/79a19eb55/ab61cd70916f4dc888dafd38215f0a76/FLAG7817701ae [2024-11-24 01:10:36,751 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:10:36,755 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i [2024-11-24 01:10:36,765 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/data/79a19eb55/ab61cd70916f4dc888dafd38215f0a76/FLAG7817701ae [2024-11-24 01:10:36,971 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/data/79a19eb55/ab61cd70916f4dc888dafd38215f0a76 [2024-11-24 01:10:36,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:10:36,975 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:10:36,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:10:36,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:10:36,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:10:36,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:10:36" (1/1) ... [2024-11-24 01:10:36,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d24fc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:36, skipping insertion in model container [2024-11-24 01:10:36,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:10:36" (1/1) ... [2024-11-24 01:10:37,008 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:10:37,176 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i[916,929] [2024-11-24 01:10:37,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:10:37,305 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:10:37,316 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i[916,929] [2024-11-24 01:10:37,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:10:37,396 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:10:37,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37 WrapperNode [2024-11-24 01:10:37,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:10:37,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:10:37,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:10:37,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:10:37,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,476 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 394 [2024-11-24 01:10:37,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:10:37,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:10:37,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:10:37,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:10:37,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,498 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,540 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:10:37,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,540 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,570 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:10:37,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:10:37,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:10:37,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:10:37,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (1/1) ... [2024-11-24 01:10:37,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:10:37,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:37,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:10:37,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:10:37,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:10:37,708 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:10:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:10:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:10:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:10:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:10:37,828 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:10:37,832 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:10:38,874 INFO L? ?]: Removed 49 outVars from TransFormulas that were not future-live. [2024-11-24 01:10:38,875 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:10:38,895 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:10:38,895 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 01:10:38,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:10:38 BoogieIcfgContainer [2024-11-24 01:10:38,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:10:38,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:10:38,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:10:38,905 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:10:38,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:10:36" (1/3) ... [2024-11-24 01:10:38,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e7c65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:10:38, skipping insertion in model container [2024-11-24 01:10:38,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:10:37" (2/3) ... [2024-11-24 01:10:38,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e7c65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:10:38, skipping insertion in model container [2024-11-24 01:10:38,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:10:38" (3/3) ... [2024-11-24 01:10:38,910 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-68.i [2024-11-24 01:10:38,926 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:10:38,928 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-1loop_file-68.i that has 2 procedures, 164 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:10:39,009 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:10:39,028 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@26374130, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:10:39,029 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:10:39,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 121 states have (on average 1.4545454545454546) internal successors, (176), 122 states have internal predecessors, (176), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-24 01:10:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-24 01:10:39,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:39,056 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:39,056 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:39,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:39,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1572993971, now seen corresponding path program 1 times [2024-11-24 01:10:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:39,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475488550] [2024-11-24 01:10:39,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-24 01:10:39,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:39,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475488550] [2024-11-24 01:10:39,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475488550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:39,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163341647] [2024-11-24 01:10:39,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:39,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:39,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:39,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:39,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:10:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:40,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:10:40,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2024-11-24 01:10:40,259 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:10:40,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163341647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:40,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:10:40,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 01:10:40,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522405409] [2024-11-24 01:10:40,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:40,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:10:40,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:40,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:10:40,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:10:40,297 INFO L87 Difference]: Start difference. First operand has 164 states, 121 states have (on average 1.4545454545454546) internal successors, (176), 122 states have internal predecessors, (176), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-24 01:10:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:40,353 INFO L93 Difference]: Finished difference Result 325 states and 549 transitions. [2024-11-24 01:10:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:10:40,355 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) Word has length 270 [2024-11-24 01:10:40,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:40,365 INFO L225 Difference]: With dead ends: 325 [2024-11-24 01:10:40,365 INFO L226 Difference]: Without dead ends: 160 [2024-11-24 01:10:40,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:10:40,373 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:40,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:10:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-24 01:10:40,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-24 01:10:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.4322033898305084) internal successors, (169), 118 states have internal predecessors, (169), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-24 01:10:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 249 transitions. [2024-11-24 01:10:40,462 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 249 transitions. Word has length 270 [2024-11-24 01:10:40,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:40,465 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 249 transitions. [2024-11-24 01:10:40,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 2 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-24 01:10:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 249 transitions. [2024-11-24 01:10:40,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-24 01:10:40,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:40,477 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:40,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:10:40,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:40,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:40,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1507091183, now seen corresponding path program 1 times [2024-11-24 01:10:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:40,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872124490] [2024-11-24 01:10:40,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:40,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:10:41,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872124490] [2024-11-24 01:10:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872124490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:41,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:10:41,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:10:41,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434398851] [2024-11-24 01:10:41,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:41,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:10:41,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:41,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:10:41,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:10:41,487 INFO L87 Difference]: Start difference. First operand 160 states and 249 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:10:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:41,548 INFO L93 Difference]: Finished difference Result 317 states and 495 transitions. [2024-11-24 01:10:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:10:41,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 270 [2024-11-24 01:10:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:41,556 INFO L225 Difference]: With dead ends: 317 [2024-11-24 01:10:41,556 INFO L226 Difference]: Without dead ends: 160 [2024-11-24 01:10:41,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:10:41,562 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:41,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 491 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:10:41,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-24 01:10:41,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-24 01:10:41,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.423728813559322) internal successors, (168), 118 states have internal predecessors, (168), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-24 01:10:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 248 transitions. [2024-11-24 01:10:41,596 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 248 transitions. Word has length 270 [2024-11-24 01:10:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:41,600 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 248 transitions. [2024-11-24 01:10:41,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:10:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 248 transitions. [2024-11-24 01:10:41,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-24 01:10:41,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:41,610 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:41,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:10:41,610 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:41,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:41,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1112724397, now seen corresponding path program 1 times [2024-11-24 01:10:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:41,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510442719] [2024-11-24 01:10:41,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:41,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:10:44,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:44,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510442719] [2024-11-24 01:10:44,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510442719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:44,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:10:44,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:10:44,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026139372] [2024-11-24 01:10:44,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:44,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:10:44,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:44,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:10:44,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:10:44,494 INFO L87 Difference]: Start difference. First operand 160 states and 248 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-24 01:10:46,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:46,771 INFO L93 Difference]: Finished difference Result 544 states and 842 transitions. [2024-11-24 01:10:46,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:10:46,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 270 [2024-11-24 01:10:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:46,776 INFO L225 Difference]: With dead ends: 544 [2024-11-24 01:10:46,776 INFO L226 Difference]: Without dead ends: 387 [2024-11-24 01:10:46,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:10:46,778 INFO L435 NwaCegarLoop]: 311 mSDtfsCounter, 992 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:46,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 829 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 01:10:46,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-24 01:10:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 295. [2024-11-24 01:10:46,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 249 states have (on average 1.4698795180722892) internal successors, (366), 250 states have internal predecessors, (366), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-24 01:10:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 452 transitions. [2024-11-24 01:10:46,852 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 452 transitions. Word has length 270 [2024-11-24 01:10:46,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:46,853 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 452 transitions. [2024-11-24 01:10:46,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-24 01:10:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 452 transitions. [2024-11-24 01:10:46,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-24 01:10:46,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:46,859 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:46,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:10:46,859 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:46,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash -475623505, now seen corresponding path program 1 times [2024-11-24 01:10:46,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:46,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138913104] [2024-11-24 01:10:46,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:46,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-24 01:10:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138913104] [2024-11-24 01:10:47,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138913104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:10:47,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762243744] [2024-11-24 01:10:47,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:47,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:47,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:10:47,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:10:47,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:10:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:47,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:10:47,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:10:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1543 proven. 147 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2024-11-24 01:10:48,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:10:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 81 proven. 150 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-11-24 01:10:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762243744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:10:49,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:10:49,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-11-24 01:10:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554291852] [2024-11-24 01:10:49,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:10:49,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:10:49,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:49,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:10:49,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:10:49,727 INFO L87 Difference]: Start difference. First operand 295 states and 452 transitions. Second operand has 15 states, 15 states have (on average 9.4) internal successors, (141), 15 states have internal predecessors, (141), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) [2024-11-24 01:10:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:50,626 INFO L93 Difference]: Finished difference Result 531 states and 812 transitions. [2024-11-24 01:10:50,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:10:50,627 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.4) internal successors, (141), 15 states have internal predecessors, (141), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) Word has length 270 [2024-11-24 01:10:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:50,630 INFO L225 Difference]: With dead ends: 531 [2024-11-24 01:10:50,630 INFO L226 Difference]: Without dead ends: 239 [2024-11-24 01:10:50,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=521, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:10:50,632 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 540 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:50,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 383 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:10:50,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-24 01:10:50,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 172. [2024-11-24 01:10:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 127 states have (on average 1.31496062992126) internal successors, (167), 127 states have internal predecessors, (167), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-24 01:10:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 247 transitions. [2024-11-24 01:10:50,673 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 247 transitions. Word has length 270 [2024-11-24 01:10:50,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:50,674 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 247 transitions. [2024-11-24 01:10:50,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.4) internal successors, (141), 15 states have internal predecessors, (141), 6 states have call successors, (102), 3 states have call predecessors, (102), 7 states have return successors, (104), 6 states have call predecessors, (104), 6 states have call successors, (104) [2024-11-24 01:10:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 247 transitions. [2024-11-24 01:10:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-24 01:10:50,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:50,681 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:50,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:10:50,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:10:50,882 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:50,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:50,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1404596375, now seen corresponding path program 1 times [2024-11-24 01:10:50,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:50,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886729330] [2024-11-24 01:10:50,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:50,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:10:51,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:51,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886729330] [2024-11-24 01:10:51,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886729330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:51,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:10:51,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:10:51,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250970422] [2024-11-24 01:10:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:51,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:10:51,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:51,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:10:51,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:10:51,290 INFO L87 Difference]: Start difference. First operand 172 states and 247 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:10:51,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:10:51,404 INFO L93 Difference]: Finished difference Result 510 states and 735 transitions. [2024-11-24 01:10:51,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:10:51,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 272 [2024-11-24 01:10:51,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:10:51,412 INFO L225 Difference]: With dead ends: 510 [2024-11-24 01:10:51,412 INFO L226 Difference]: Without dead ends: 341 [2024-11-24 01:10:51,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:10:51,413 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 153 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:10:51,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 545 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:10:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-24 01:10:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 339. [2024-11-24 01:10:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 250 states have (on average 1.312) internal successors, (328), 250 states have internal predecessors, (328), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-24 01:10:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 488 transitions. [2024-11-24 01:10:51,515 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 488 transitions. Word has length 272 [2024-11-24 01:10:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:10:51,518 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 488 transitions. [2024-11-24 01:10:51,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:10:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 488 transitions. [2024-11-24 01:10:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-24 01:10:51,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:10:51,524 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:10:51,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:10:51,528 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:10:51,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:10:51,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1652742869, now seen corresponding path program 1 times [2024-11-24 01:10:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:10:51,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48387519] [2024-11-24 01:10:51,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:10:51,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:10:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:10:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:10:56,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:10:56,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48387519] [2024-11-24 01:10:56,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48387519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:10:56,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:10:56,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 01:10:56,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754737827] [2024-11-24 01:10:56,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:10:56,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:10:56,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:10:56,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:10:56,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:10:56,305 INFO L87 Difference]: Start difference. First operand 339 states and 488 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-24 01:11:11,526 WARN L286 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 49 DAG size of output: 40 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:11:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:14,666 INFO L93 Difference]: Finished difference Result 1443 states and 2014 transitions. [2024-11-24 01:11:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:11:14,667 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 272 [2024-11-24 01:11:14,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:14,674 INFO L225 Difference]: With dead ends: 1443 [2024-11-24 01:11:14,674 INFO L226 Difference]: Without dead ends: 1107 [2024-11-24 01:11:14,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:11:14,676 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1857 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:14,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1857 Valid, 823 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-24 01:11:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2024-11-24 01:11:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 569. [2024-11-24 01:11:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 472 states have (on average 1.3601694915254237) internal successors, (642), 474 states have internal predecessors, (642), 86 states have call successors, (86), 10 states have call predecessors, (86), 10 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-24 01:11:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 814 transitions. [2024-11-24 01:11:14,785 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 814 transitions. Word has length 272 [2024-11-24 01:11:14,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:14,786 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 814 transitions. [2024-11-24 01:11:14,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-24 01:11:14,787 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 814 transitions. [2024-11-24 01:11:14,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-24 01:11:14,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:14,796 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:14,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:11:14,796 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:14,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:14,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1362360749, now seen corresponding path program 1 times [2024-11-24 01:11:14,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:14,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111197113] [2024-11-24 01:11:14,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:14,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:11:16,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:16,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111197113] [2024-11-24 01:11:16,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111197113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:16,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:16,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:11:16,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913423977] [2024-11-24 01:11:16,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:16,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:11:16,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:16,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:11:16,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:11:16,866 INFO L87 Difference]: Start difference. First operand 569 states and 814 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:11:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:19,093 INFO L93 Difference]: Finished difference Result 1255 states and 1792 transitions. [2024-11-24 01:11:19,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:11:19,094 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 272 [2024-11-24 01:11:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:19,098 INFO L225 Difference]: With dead ends: 1255 [2024-11-24 01:11:19,099 INFO L226 Difference]: Without dead ends: 689 [2024-11-24 01:11:19,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:11:19,101 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 574 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:19,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 764 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-24 01:11:19,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-24 01:11:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 543. [2024-11-24 01:11:19,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 446 states have (on average 1.3632286995515694) internal successors, (608), 448 states have internal predecessors, (608), 86 states have call successors, (86), 10 states have call predecessors, (86), 10 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-24 01:11:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 780 transitions. [2024-11-24 01:11:19,229 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 780 transitions. Word has length 272 [2024-11-24 01:11:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:19,230 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 780 transitions. [2024-11-24 01:11:19,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:11:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 780 transitions. [2024-11-24 01:11:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-24 01:11:19,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:19,236 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:19,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:11:19,237 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:19,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:19,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1053876525, now seen corresponding path program 1 times [2024-11-24 01:11:19,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:19,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510667422] [2024-11-24 01:11:19,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:19,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:11:24,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:24,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510667422] [2024-11-24 01:11:24,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510667422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:24,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:24,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 01:11:24,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223082851] [2024-11-24 01:11:24,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:24,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:11:24,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:24,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:11:24,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:11:24,761 INFO L87 Difference]: Start difference. First operand 543 states and 780 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:11:30,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:30,832 INFO L93 Difference]: Finished difference Result 2045 states and 2900 transitions. [2024-11-24 01:11:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:11:30,833 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 272 [2024-11-24 01:11:30,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:30,845 INFO L225 Difference]: With dead ends: 2045 [2024-11-24 01:11:30,848 INFO L226 Difference]: Without dead ends: 1505 [2024-11-24 01:11:30,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:11:30,854 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 1420 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:30,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 1079 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-24 01:11:30,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-11-24 01:11:31,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1251. [2024-11-24 01:11:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1078 states have (on average 1.3868274582560296) internal successors, (1495), 1084 states have internal predecessors, (1495), 152 states have call successors, (152), 20 states have call predecessors, (152), 20 states have return successors, (152), 146 states have call predecessors, (152), 152 states have call successors, (152) [2024-11-24 01:11:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1799 transitions. [2024-11-24 01:11:31,020 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1799 transitions. Word has length 272 [2024-11-24 01:11:31,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:31,021 INFO L471 AbstractCegarLoop]: Abstraction has 1251 states and 1799 transitions. [2024-11-24 01:11:31,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:11:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1799 transitions. [2024-11-24 01:11:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-24 01:11:31,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:31,024 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:31,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:11:31,025 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:31,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash -225987153, now seen corresponding path program 1 times [2024-11-24 01:11:31,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:31,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805056409] [2024-11-24 01:11:31,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:31,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 90 proven. 27 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-24 01:11:31,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:31,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805056409] [2024-11-24 01:11:31,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805056409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:11:31,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816932126] [2024-11-24 01:11:31,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:31,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:31,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:11:31,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:11:31,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:11:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:31,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:11:31,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:11:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1327 proven. 33 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2024-11-24 01:11:32,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:11:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 84 proven. 33 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-24 01:11:32,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816932126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:11:32,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:11:32,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-24 01:11:32,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018398864] [2024-11-24 01:11:32,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:11:32,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:11:32,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:32,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:11:32,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:11:32,788 INFO L87 Difference]: Start difference. First operand 1251 states and 1799 transitions. Second operand has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 15 states have internal predecessors, (130), 4 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2024-11-24 01:11:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:35,363 INFO L93 Difference]: Finished difference Result 2483 states and 3523 transitions. [2024-11-24 01:11:35,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 01:11:35,364 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 15 states have internal predecessors, (130), 4 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) Word has length 272 [2024-11-24 01:11:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:35,371 INFO L225 Difference]: With dead ends: 2483 [2024-11-24 01:11:35,371 INFO L226 Difference]: Without dead ends: 1235 [2024-11-24 01:11:35,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=451, Invalid=1441, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 01:11:35,375 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 777 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:35,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 836 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 01:11:35,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2024-11-24 01:11:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1180. [2024-11-24 01:11:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 952 states have (on average 1.3361344537815125) internal successors, (1272), 959 states have internal predecessors, (1272), 190 states have call successors, (190), 37 states have call predecessors, (190), 37 states have return successors, (190), 183 states have call predecessors, (190), 190 states have call successors, (190) [2024-11-24 01:11:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1652 transitions. [2024-11-24 01:11:35,563 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1652 transitions. Word has length 272 [2024-11-24 01:11:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:35,564 INFO L471 AbstractCegarLoop]: Abstraction has 1180 states and 1652 transitions. [2024-11-24 01:11:35,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.666666666666666) internal successors, (130), 15 states have internal predecessors, (130), 4 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (64), 4 states have call predecessors, (64), 4 states have call successors, (64) [2024-11-24 01:11:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1652 transitions. [2024-11-24 01:11:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-24 01:11:35,567 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:35,567 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:35,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:11:35,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:35,768 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:35,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:35,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1564257230, now seen corresponding path program 1 times [2024-11-24 01:11:35,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:35,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903850902] [2024-11-24 01:11:35,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:35,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:11:37,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:37,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903850902] [2024-11-24 01:11:37,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903850902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:37,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:37,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:11:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780989917] [2024-11-24 01:11:37,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:37,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:11:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:37,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:11:37,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:11:37,693 INFO L87 Difference]: Start difference. First operand 1180 states and 1652 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:11:39,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:39,394 INFO L93 Difference]: Finished difference Result 2484 states and 3478 transitions. [2024-11-24 01:11:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:11:39,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 274 [2024-11-24 01:11:39,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:39,401 INFO L225 Difference]: With dead ends: 2484 [2024-11-24 01:11:39,401 INFO L226 Difference]: Without dead ends: 1372 [2024-11-24 01:11:39,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:11:39,404 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 627 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:39,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 914 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 01:11:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2024-11-24 01:11:39,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1240. [2024-11-24 01:11:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1012 states have (on average 1.3438735177865613) internal successors, (1360), 1019 states have internal predecessors, (1360), 190 states have call successors, (190), 37 states have call predecessors, (190), 37 states have return successors, (190), 183 states have call predecessors, (190), 190 states have call successors, (190) [2024-11-24 01:11:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1740 transitions. [2024-11-24 01:11:39,602 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1740 transitions. Word has length 274 [2024-11-24 01:11:39,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:39,603 INFO L471 AbstractCegarLoop]: Abstraction has 1240 states and 1740 transitions. [2024-11-24 01:11:39,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:11:39,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1740 transitions. [2024-11-24 01:11:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-24 01:11:39,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:39,606 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:39,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:11:39,606 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:39,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:39,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1005268626, now seen corresponding path program 1 times [2024-11-24 01:11:39,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:39,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853857157] [2024-11-24 01:11:39,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:39,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 39 proven. 78 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-24 01:11:40,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:40,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853857157] [2024-11-24 01:11:40,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853857157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:11:40,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332199484] [2024-11-24 01:11:40,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:40,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:40,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:11:40,266 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:11:40,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:11:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:40,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 01:11:40,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:11:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1940 proven. 180 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2024-11-24 01:11:41,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:11:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 246 proven. 96 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2024-11-24 01:11:42,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332199484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:11:42,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:11:42,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 26 [2024-11-24 01:11:42,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936665405] [2024-11-24 01:11:42,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:11:42,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 01:11:42,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:42,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 01:11:42,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:11:42,785 INFO L87 Difference]: Start difference. First operand 1240 states and 1740 transitions. Second operand has 26 states, 25 states have (on average 6.76) internal successors, (169), 24 states have internal predecessors, (169), 9 states have call successors, (87), 4 states have call predecessors, (87), 9 states have return successors, (90), 9 states have call predecessors, (90), 9 states have call successors, (90) [2024-11-24 01:11:48,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:48,151 INFO L93 Difference]: Finished difference Result 3086 states and 4229 transitions. [2024-11-24 01:11:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-24 01:11:48,152 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 6.76) internal successors, (169), 24 states have internal predecessors, (169), 9 states have call successors, (87), 4 states have call predecessors, (87), 9 states have return successors, (90), 9 states have call predecessors, (90), 9 states have call successors, (90) Word has length 274 [2024-11-24 01:11:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:48,161 INFO L225 Difference]: With dead ends: 3086 [2024-11-24 01:11:48,161 INFO L226 Difference]: Without dead ends: 1914 [2024-11-24 01:11:48,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1493 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1483, Invalid=4217, Unknown=0, NotChecked=0, Total=5700 [2024-11-24 01:11:48,166 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 3546 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3546 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:48,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3546 Valid, 1172 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-24 01:11:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2024-11-24 01:11:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 933. [2024-11-24 01:11:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 750 states have (on average 1.292) internal successors, (969), 755 states have internal predecessors, (969), 140 states have call successors, (140), 42 states have call predecessors, (140), 42 states have return successors, (140), 135 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-24 01:11:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1249 transitions. [2024-11-24 01:11:48,368 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1249 transitions. Word has length 274 [2024-11-24 01:11:48,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:48,368 INFO L471 AbstractCegarLoop]: Abstraction has 933 states and 1249 transitions. [2024-11-24 01:11:48,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 6.76) internal successors, (169), 24 states have internal predecessors, (169), 9 states have call successors, (87), 4 states have call predecessors, (87), 9 states have return successors, (90), 9 states have call predecessors, (90), 9 states have call successors, (90) [2024-11-24 01:11:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1249 transitions. [2024-11-24 01:11:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-24 01:11:48,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:48,371 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:48,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:11:48,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:11:48,572 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:48,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:48,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1138831512, now seen corresponding path program 1 times [2024-11-24 01:11:48,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:48,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392817672] [2024-11-24 01:11:48,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:48,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:11:48,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:48,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392817672] [2024-11-24 01:11:48,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392817672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:48,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:48,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:11:48,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696063939] [2024-11-24 01:11:48,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:48,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:11:48,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:48,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:11:48,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:11:48,921 INFO L87 Difference]: Start difference. First operand 933 states and 1249 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:11:49,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:49,482 INFO L93 Difference]: Finished difference Result 1945 states and 2631 transitions. [2024-11-24 01:11:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:11:49,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 277 [2024-11-24 01:11:49,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:49,488 INFO L225 Difference]: With dead ends: 1945 [2024-11-24 01:11:49,488 INFO L226 Difference]: Without dead ends: 1068 [2024-11-24 01:11:49,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:11:49,490 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 229 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:49,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 559 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:11:49,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2024-11-24 01:11:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 947. [2024-11-24 01:11:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 764 states have (on average 1.286649214659686) internal successors, (983), 769 states have internal predecessors, (983), 140 states have call successors, (140), 42 states have call predecessors, (140), 42 states have return successors, (140), 135 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-24 01:11:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1263 transitions. [2024-11-24 01:11:49,695 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1263 transitions. Word has length 277 [2024-11-24 01:11:49,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:49,696 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1263 transitions. [2024-11-24 01:11:49,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:11:49,696 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1263 transitions. [2024-11-24 01:11:49,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-24 01:11:49,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:49,699 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:49,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:11:49,699 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:49,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:49,699 INFO L85 PathProgramCache]: Analyzing trace with hash -666606822, now seen corresponding path program 1 times [2024-11-24 01:11:49,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:49,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138119979] [2024-11-24 01:11:49,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:49,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:11:50,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:50,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138119979] [2024-11-24 01:11:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138119979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:50,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:50,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:11:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484029358] [2024-11-24 01:11:50,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:50,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:11:50,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:50,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:11:50,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:11:50,333 INFO L87 Difference]: Start difference. First operand 947 states and 1263 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:11:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:11:51,092 INFO L93 Difference]: Finished difference Result 1842 states and 2467 transitions. [2024-11-24 01:11:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:11:51,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 277 [2024-11-24 01:11:51,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:11:51,098 INFO L225 Difference]: With dead ends: 1842 [2024-11-24 01:11:51,099 INFO L226 Difference]: Without dead ends: 1271 [2024-11-24 01:11:51,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:11:51,101 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 91 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:11:51,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1005 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:11:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-11-24 01:11:51,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 995. [2024-11-24 01:11:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 812 states have (on average 1.2992610837438423) internal successors, (1055), 817 states have internal predecessors, (1055), 140 states have call successors, (140), 42 states have call predecessors, (140), 42 states have return successors, (140), 135 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-24 01:11:51,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1335 transitions. [2024-11-24 01:11:51,281 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1335 transitions. Word has length 277 [2024-11-24 01:11:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:11:51,282 INFO L471 AbstractCegarLoop]: Abstraction has 995 states and 1335 transitions. [2024-11-24 01:11:51,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:11:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1335 transitions. [2024-11-24 01:11:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-24 01:11:51,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:11:51,285 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:11:51,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:11:51,285 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:11:51,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:11:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2040012572, now seen corresponding path program 1 times [2024-11-24 01:11:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:11:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799985135] [2024-11-24 01:11:51,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:11:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:11:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:11:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:11:56,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:11:56,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799985135] [2024-11-24 01:11:56,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799985135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:11:56,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:11:56,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:11:56,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649670441] [2024-11-24 01:11:56,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:11:56,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:11:56,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:11:56,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:11:56,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:11:56,657 INFO L87 Difference]: Start difference. First operand 995 states and 1335 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-24 01:12:00,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:12:00,545 INFO L93 Difference]: Finished difference Result 1903 states and 2544 transitions. [2024-11-24 01:12:00,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:12:00,546 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 277 [2024-11-24 01:12:00,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:12:00,551 INFO L225 Difference]: With dead ends: 1903 [2024-11-24 01:12:00,551 INFO L226 Difference]: Without dead ends: 1284 [2024-11-24 01:12:00,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:12:00,553 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 1184 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:12:00,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 785 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-24 01:12:00,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2024-11-24 01:12:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 824. [2024-11-24 01:12:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 650 states have (on average 1.2861538461538462) internal successors, (836), 652 states have internal predecessors, (836), 131 states have call successors, (131), 42 states have call predecessors, (131), 42 states have return successors, (131), 129 states have call predecessors, (131), 131 states have call successors, (131) [2024-11-24 01:12:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1098 transitions. [2024-11-24 01:12:00,709 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1098 transitions. Word has length 277 [2024-11-24 01:12:00,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:12:00,710 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 1098 transitions. [2024-11-24 01:12:00,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-24 01:12:00,710 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1098 transitions. [2024-11-24 01:12:00,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-24 01:12:00,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:12:00,713 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:12:00,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:12:00,713 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:12:00,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:12:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash 34993052, now seen corresponding path program 1 times [2024-11-24 01:12:00,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:12:00,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188132201] [2024-11-24 01:12:00,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:00,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:12:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:12:03,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:12:03,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188132201] [2024-11-24 01:12:03,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188132201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:12:03,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:12:03,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:12:03,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787328866] [2024-11-24 01:12:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:12:03,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:12:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:12:03,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:12:03,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:12:03,532 INFO L87 Difference]: Start difference. First operand 824 states and 1098 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:12:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:12:04,566 INFO L93 Difference]: Finished difference Result 1837 states and 2459 transitions. [2024-11-24 01:12:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:12:04,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 277 [2024-11-24 01:12:04,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:12:04,570 INFO L225 Difference]: With dead ends: 1837 [2024-11-24 01:12:04,571 INFO L226 Difference]: Without dead ends: 1069 [2024-11-24 01:12:04,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:12:04,574 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 546 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:12:04,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 404 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:12:04,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2024-11-24 01:12:04,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 853. [2024-11-24 01:12:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 679 states have (on average 1.2945508100147276) internal successors, (879), 681 states have internal predecessors, (879), 131 states have call successors, (131), 42 states have call predecessors, (131), 42 states have return successors, (131), 129 states have call predecessors, (131), 131 states have call successors, (131) [2024-11-24 01:12:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1141 transitions. [2024-11-24 01:12:04,800 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1141 transitions. Word has length 277 [2024-11-24 01:12:04,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:12:04,801 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1141 transitions. [2024-11-24 01:12:04,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:12:04,801 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1141 transitions. [2024-11-24 01:12:04,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-24 01:12:04,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:12:04,805 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:12:04,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:12:04,805 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:12:04,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:12:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1553354850, now seen corresponding path program 1 times [2024-11-24 01:12:04,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:12:04,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935343981] [2024-11-24 01:12:04,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:04,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:12:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-24 01:12:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:12:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935343981] [2024-11-24 01:12:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935343981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:12:05,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486919823] [2024-11-24 01:12:05,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:05,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:12:05,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:12:05,430 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:12:05,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:12:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:05,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-24 01:12:05,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:12:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1447 proven. 144 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-11-24 01:12:08,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:12:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 228 proven. 3 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-11-24 01:12:10,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486919823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:12:10,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:12:10,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 18, 9] total 28 [2024-11-24 01:12:10,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062506666] [2024-11-24 01:12:10,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:12:10,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-24 01:12:10,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:12:10,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-24 01:12:10,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2024-11-24 01:12:10,978 INFO L87 Difference]: Start difference. First operand 853 states and 1141 transitions. Second operand has 28 states, 27 states have (on average 6.185185185185185) internal successors, (167), 25 states have internal predecessors, (167), 8 states have call successors, (87), 5 states have call predecessors, (87), 10 states have return successors, (90), 10 states have call predecessors, (90), 8 states have call successors, (90) [2024-11-24 01:12:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:12:20,123 INFO L93 Difference]: Finished difference Result 1372 states and 1808 transitions. [2024-11-24 01:12:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-24 01:12:20,124 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 6.185185185185185) internal successors, (167), 25 states have internal predecessors, (167), 8 states have call successors, (87), 5 states have call predecessors, (87), 10 states have return successors, (90), 10 states have call predecessors, (90), 8 states have call successors, (90) Word has length 277 [2024-11-24 01:12:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:12:20,127 INFO L225 Difference]: With dead ends: 1372 [2024-11-24 01:12:20,127 INFO L226 Difference]: Without dead ends: 843 [2024-11-24 01:12:20,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1525, Invalid=5785, Unknown=0, NotChecked=0, Total=7310 [2024-11-24 01:12:20,130 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 1834 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:12:20,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1125 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 01:12:20,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2024-11-24 01:12:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 762. [2024-11-24 01:12:20,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 605 states have (on average 1.2743801652892561) internal successors, (771), 607 states have internal predecessors, (771), 114 states have call successors, (114), 42 states have call predecessors, (114), 42 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2024-11-24 01:12:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 999 transitions. [2024-11-24 01:12:20,295 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 999 transitions. Word has length 277 [2024-11-24 01:12:20,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:12:20,295 INFO L471 AbstractCegarLoop]: Abstraction has 762 states and 999 transitions. [2024-11-24 01:12:20,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 6.185185185185185) internal successors, (167), 25 states have internal predecessors, (167), 8 states have call successors, (87), 5 states have call predecessors, (87), 10 states have return successors, (90), 10 states have call predecessors, (90), 8 states have call successors, (90) [2024-11-24 01:12:20,296 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 999 transitions. [2024-11-24 01:12:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-24 01:12:20,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:12:20,297 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:12:20,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:12:20,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 01:12:20,498 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:12:20,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:12:20,499 INFO L85 PathProgramCache]: Analyzing trace with hash -565130250, now seen corresponding path program 1 times [2024-11-24 01:12:20,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:12:20,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466287091] [2024-11-24 01:12:20,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:20,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:12:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-24 01:12:23,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:12:23,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466287091] [2024-11-24 01:12:23,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466287091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:12:23,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132451981] [2024-11-24 01:12:23,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:23,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:12:23,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:12:23,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:12:23,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:12:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:23,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 01:12:23,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:12:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 515 proven. 210 refuted. 0 times theorem prover too weak. 2395 trivial. 0 not checked. [2024-11-24 01:12:28,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:12:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-24 01:12:36,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132451981] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:12:36,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:12:36,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 31 [2024-11-24 01:12:36,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737640660] [2024-11-24 01:12:36,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:12:36,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-24 01:12:36,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:12:36,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-24 01:12:36,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=735, Unknown=0, NotChecked=0, Total=930 [2024-11-24 01:12:36,963 INFO L87 Difference]: Start difference. First operand 762 states and 999 transitions. Second operand has 31 states, 31 states have (on average 6.741935483870968) internal successors, (209), 31 states have internal predecessors, (209), 5 states have call successors, (120), 4 states have call predecessors, (120), 7 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) [2024-11-24 01:12:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:12:41,423 INFO L93 Difference]: Finished difference Result 2028 states and 2658 transitions. [2024-11-24 01:12:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 01:12:41,424 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.741935483870968) internal successors, (209), 31 states have internal predecessors, (209), 5 states have call successors, (120), 4 states have call predecessors, (120), 7 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) Word has length 277 [2024-11-24 01:12:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:12:41,428 INFO L225 Difference]: With dead ends: 2028 [2024-11-24 01:12:41,428 INFO L226 Difference]: Without dead ends: 1322 [2024-11-24 01:12:41,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=735, Invalid=2021, Unknown=0, NotChecked=0, Total=2756 [2024-11-24 01:12:41,431 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 1738 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:12:41,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 1741 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-24 01:12:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-24 01:12:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 391. [2024-11-24 01:12:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 310 states have (on average 1.2483870967741935) internal successors, (387), 311 states have internal predecessors, (387), 57 states have call successors, (57), 23 states have call predecessors, (57), 23 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-24 01:12:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 501 transitions. [2024-11-24 01:12:41,616 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 501 transitions. Word has length 277 [2024-11-24 01:12:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:12:41,617 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 501 transitions. [2024-11-24 01:12:41,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.741935483870968) internal successors, (209), 31 states have internal predecessors, (209), 5 states have call successors, (120), 4 states have call predecessors, (120), 7 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) [2024-11-24 01:12:41,617 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 501 transitions. [2024-11-24 01:12:41,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-24 01:12:41,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:12:41,620 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:12:41,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:12:41,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:12:41,820 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:12:41,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:12:41,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1872815791, now seen corresponding path program 1 times [2024-11-24 01:12:41,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:12:41,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772032748] [2024-11-24 01:12:41,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:41,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:12:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-24 01:12:42,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:12:42,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772032748] [2024-11-24 01:12:42,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772032748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:12:42,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029923187] [2024-11-24 01:12:42,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:42,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:12:42,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:12:42,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:12:42,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:12:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:42,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:12:42,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:12:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1219 proven. 87 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2024-11-24 01:12:43,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:12:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-24 01:12:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029923187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:12:43,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:12:43,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-11-24 01:12:43,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29269335] [2024-11-24 01:12:43,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:12:43,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:12:43,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:12:43,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:12:43,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:12:43,578 INFO L87 Difference]: Start difference. First operand 391 states and 501 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2024-11-24 01:12:44,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:12:44,525 INFO L93 Difference]: Finished difference Result 1203 states and 1529 transitions. [2024-11-24 01:12:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:12:44,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 279 [2024-11-24 01:12:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:12:44,530 INFO L225 Difference]: With dead ends: 1203 [2024-11-24 01:12:44,530 INFO L226 Difference]: Without dead ends: 815 [2024-11-24 01:12:44,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 555 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:12:44,531 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 563 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:12:44,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 662 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:12:44,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-24 01:12:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 793. [2024-11-24 01:12:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 628 states have (on average 1.2420382165605095) internal successors, (780), 630 states have internal predecessors, (780), 114 states have call successors, (114), 50 states have call predecessors, (114), 50 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2024-11-24 01:12:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1008 transitions. [2024-11-24 01:12:44,818 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1008 transitions. Word has length 279 [2024-11-24 01:12:44,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:12:44,819 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 1008 transitions. [2024-11-24 01:12:44,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2024-11-24 01:12:44,819 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1008 transitions. [2024-11-24 01:12:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-24 01:12:44,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:12:44,821 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:12:44,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:12:45,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 01:12:45,022 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:12:45,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:12:45,023 INFO L85 PathProgramCache]: Analyzing trace with hash 833803603, now seen corresponding path program 1 times [2024-11-24 01:12:45,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:12:45,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127379217] [2024-11-24 01:12:45,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:45,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:12:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 01:12:45,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100875659] [2024-11-24 01:12:45,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:45,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:12:45,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:12:45,296 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:12:45,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:12:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:45,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 01:12:45,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:12:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1408 proven. 54 refuted. 0 times theorem prover too weak. 1658 trivial. 0 not checked. [2024-11-24 01:12:46,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:12:52,354 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~var_1_29~0 256))) (and (forall ((v_z_459 Int)) (let ((.cse0 (+ .cse1 (* (- 1) v_z_459)))) (or (< v_z_459 0) (< 126 v_z_459) (< (div c_~last_1_var_1_40~0 .cse0) 3) (not (= (mod c_~last_1_var_1_40~0 .cse0) 0))))) (or (forall ((v_z_459 Int)) (let ((.cse2 (+ .cse1 (* (- 1) v_z_459)))) (or (< (div c_~last_1_var_1_40~0 .cse2) 2) (< .cse1 v_z_459) (= (mod c_~last_1_var_1_40~0 .cse2) 0) (< 126 v_z_459)))) (< 0 (+ c_~last_1_var_1_40~0 1))) (or (< c_~last_1_var_1_40~0 0) (forall ((v_z_459 Int)) (or (< v_z_459 0) (< 126 v_z_459) (< (div c_~last_1_var_1_40~0 (+ .cse1 (* (- 1) v_z_459))) 3)))) (forall ((v_z_459 Int)) (or (< (div c_~last_1_var_1_40~0 (+ .cse1 (* (- 1) v_z_459))) 4) (< v_z_459 0) (< 126 v_z_459))))) is different from false [2024-11-24 01:12:52,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:12:52,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127379217] [2024-11-24 01:12:52,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 01:12:52,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100875659] [2024-11-24 01:12:52,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100875659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:12:52,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:12:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-24 01:12:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106268057] [2024-11-24 01:12:52,387 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-24 01:12:52,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:12:52,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:12:52,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:12:52,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=160, Unknown=1, NotChecked=26, Total=240 [2024-11-24 01:12:52,389 INFO L87 Difference]: Start difference. First operand 793 states and 1008 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2024-11-24 01:12:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:12:54,170 INFO L93 Difference]: Finished difference Result 2030 states and 2584 transitions. [2024-11-24 01:12:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-24 01:12:54,170 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 279 [2024-11-24 01:12:54,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:12:54,175 INFO L225 Difference]: With dead ends: 2030 [2024-11-24 01:12:54,175 INFO L226 Difference]: Without dead ends: 1240 [2024-11-24 01:12:54,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=262, Invalid=671, Unknown=1, NotChecked=58, Total=992 [2024-11-24 01:12:54,176 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 606 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:12:54,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 1186 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:12:54,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2024-11-24 01:12:54,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 942. [2024-11-24 01:12:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 719 states have (on average 1.21557719054242) internal successors, (874), 721 states have internal predecessors, (874), 154 states have call successors, (154), 68 states have call predecessors, (154), 68 states have return successors, (154), 152 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-24 01:12:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1182 transitions. [2024-11-24 01:12:54,488 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1182 transitions. Word has length 279 [2024-11-24 01:12:54,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:12:54,488 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1182 transitions. [2024-11-24 01:12:54,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 11 states have internal predecessors, (94), 3 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2024-11-24 01:12:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1182 transitions. [2024-11-24 01:12:54,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-24 01:12:54,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:12:54,490 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:12:54,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:12:54,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:12:54,691 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:12:54,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:12:54,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1532890991, now seen corresponding path program 1 times [2024-11-24 01:12:54,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:12:54,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440532079] [2024-11-24 01:12:54,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:54,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:12:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 01:12:54,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952410149] [2024-11-24 01:12:54,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:12:54,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:12:54,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:12:54,861 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:12:54,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:12:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:12:55,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 01:12:55,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:13:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2195 proven. 306 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2024-11-24 01:13:05,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:13:12,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:13:12,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440532079] [2024-11-24 01:13:12,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 01:13:12,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952410149] [2024-11-24 01:13:12,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952410149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:13:12,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:13:12,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2024-11-24 01:13:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824295795] [2024-11-24 01:13:12,131 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-24 01:13:12,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 01:13:12,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:13:12,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 01:13:12,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=865, Unknown=1, NotChecked=0, Total=1122 [2024-11-24 01:13:12,132 INFO L87 Difference]: Start difference. First operand 942 states and 1182 transitions. Second operand has 25 states, 25 states have (on average 4.72) internal successors, (118), 25 states have internal predecessors, (118), 10 states have call successors, (40), 10 states have call predecessors, (40), 13 states have return successors, (40), 8 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-24 01:13:20,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:13:24,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:13:32,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:13:40,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:13:44,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:13:48,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:13:52,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:13:56,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:13:58,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:02,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:06,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:14,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:18,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:23,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:27,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:31,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:35,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:39,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:43,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:47,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:53,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:54,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:14:58,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:02,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:06,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:10,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:14,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:18,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:23,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:27,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:31,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:35,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:39,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:43,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:47,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:51,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:55,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:15:59,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:16:03,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-24 01:16:07,661 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-24 01:16:07,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-24 01:16:07,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=1020, Invalid=3269, Unknown=1, NotChecked=0, Total=4290 [2024-11-24 01:16:07,664 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 80 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 174 mSolverCounterUnsat, 37 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 37 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:16:07,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 218 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 494 Invalid, 37 Unknown, 0 Unchecked, 153.7s Time] [2024-11-24 01:16:07,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:16:07,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:16:07,870 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_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:388) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) 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: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-24 01:16:07,878 INFO L158 Benchmark]: Toolchain (without parser) took 330902.14ms. Allocated memory was 117.4MB in the beginning and 696.3MB in the end (delta: 578.8MB). Free memory was 92.5MB in the beginning and 451.4MB in the end (delta: -358.9MB). Peak memory consumption was 221.2MB. Max. memory is 16.1GB. [2024-11-24 01:16:07,878 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:16:07,882 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.28ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 74.6MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:16:07,882 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.32ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 68.4MB in the end (delta: 6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:16:07,883 INFO L158 Benchmark]: Boogie Preprocessor took 141.60ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 60.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:16:07,883 INFO L158 Benchmark]: RCFGBuilder took 1275.72ms. Allocated memory is still 117.4MB. Free memory was 60.0MB in the beginning and 64.8MB in the end (delta: -4.7MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2024-11-24 01:16:07,883 INFO L158 Benchmark]: TraceAbstraction took 328976.17ms. Allocated memory was 117.4MB in the beginning and 696.3MB in the end (delta: 578.8MB). Free memory was 64.2MB in the beginning and 451.4MB in the end (delta: -387.2MB). Peak memory consumption was 189.2MB. Max. memory is 16.1GB. [2024-11-24 01:16:07,885 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.28ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 74.6MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.32ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 68.4MB in the end (delta: 6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 141.60ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 60.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1275.72ms. Allocated memory is still 117.4MB. Free memory was 60.0MB in the beginning and 64.8MB in the end (delta: -4.7MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * TraceAbstraction took 328976.17ms. Allocated memory was 117.4MB in the beginning and 696.3MB in the end (delta: 578.8MB). Free memory was 64.2MB in the beginning and 451.4MB in the end (delta: -387.2MB). Peak memory consumption was 189.2MB. 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_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC --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 7af22c4985483bd6c8caf866cf1f41c10246f5959d956f77eec260fff7ae1f47 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:16:10,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:16:10,848 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-24 01:16:10,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:16:10,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:16:10,897 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:16:10,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:16:10,898 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:16:10,898 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:16:10,900 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:16:10,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:16:10,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:16:10,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:16:10,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:16:10,902 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:16:10,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:16:10,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:16:10,904 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:16:10,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:16:10,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:16:10,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:16:10,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:16:10,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:16:10,905 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:16:10,905 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 01:16:10,905 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 01:16:10,905 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:16:10,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:16:10,906 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:16:10,906 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:16:10,906 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:16:10,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:16:10,906 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:16:10,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:16:10,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:16:10,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:16:10,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:16:10,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:16:10,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:16:10,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:16:10,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:16:10,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:16:10,909 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:16:10,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:16:10,909 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 01:16:10,909 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 01:16:10,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:16:10,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:16:10,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:16:10,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:16:10,910 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC 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 -> 7af22c4985483bd6c8caf866cf1f41c10246f5959d956f77eec260fff7ae1f47 [2024-11-24 01:16:11,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:16:11,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:16:11,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:16:11,309 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:16:11,310 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:16:11,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i [2024-11-24 01:16:14,692 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/data/7f7d25903/7f834eaa61804da89fdbeb041d210942/FLAG1acb8c5eb [2024-11-24 01:16:15,111 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:16:15,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i [2024-11-24 01:16:15,141 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/data/7f7d25903/7f834eaa61804da89fdbeb041d210942/FLAG1acb8c5eb [2024-11-24 01:16:15,166 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/data/7f7d25903/7f834eaa61804da89fdbeb041d210942 [2024-11-24 01:16:15,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:16:15,171 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:16:15,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:16:15,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:16:15,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:16:15,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56bb92fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15, skipping insertion in model container [2024-11-24 01:16:15,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,212 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:16:15,445 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i[916,929] [2024-11-24 01:16:15,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:16:15,632 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:16:15,646 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-68.i[916,929] [2024-11-24 01:16:15,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:16:15,754 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:16:15,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15 WrapperNode [2024-11-24 01:16:15,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:16:15,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:16:15,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:16:15,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:16:15,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,833 INFO L138 Inliner]: procedures = 27, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2024-11-24 01:16:15,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:16:15,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:16:15,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:16:15,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:16:15,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,849 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,868 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:16:15,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,881 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,887 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:16:15,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:16:15,897 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:16:15,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:16:15,899 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (1/1) ... [2024-11-24 01:16:15,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:16:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:16:15,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:16:15,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:16:15,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:16:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 01:16:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:16:15,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:16:15,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:16:15,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:16:16,110 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:16:16,112 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:16:21,127 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-24 01:16:21,128 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:16:21,143 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:16:21,143 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 01:16:21,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:16:21 BoogieIcfgContainer [2024-11-24 01:16:21,144 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:16:21,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:16:21,147 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:16:21,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:16:21,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:16:15" (1/3) ... [2024-11-24 01:16:21,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562d7a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:16:21, skipping insertion in model container [2024-11-24 01:16:21,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:15" (2/3) ... [2024-11-24 01:16:21,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562d7a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:16:21, skipping insertion in model container [2024-11-24 01:16:21,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:16:21" (3/3) ... [2024-11-24 01:16:21,156 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-68.i [2024-11-24 01:16:21,171 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:16:21,172 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-1loop_file-68.i that has 2 procedures, 106 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:16:21,247 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:16:21,260 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@69386fc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:16:21,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:16:21,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 64 states have internal predecessors, (85), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-24 01:16:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 01:16:21,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:16:21,287 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:16:21,288 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:16:21,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:16:21,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1113331245, now seen corresponding path program 1 times [2024-11-24 01:16:21,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:16:21,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240159651] [2024-11-24 01:16:21,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:16:21,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:16:21,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:16:21,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 01:16:21,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-24 01:16:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:16:22,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 01:16:22,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:16:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1310 proven. 0 refuted. 0 times theorem prover too weak. 1810 trivial. 0 not checked. [2024-11-24 01:16:22,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:16:22,155 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:16:22,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240159651] [2024-11-24 01:16:22,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240159651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:16:22,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:16:22,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:16:22,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902196440] [2024-11-24 01:16:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:16:22,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:16:22,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:16:22,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:16:22,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:16:22,197 INFO L87 Difference]: Start difference. First operand has 106 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 64 states have internal predecessors, (85), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-24 01:16:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:16:22,241 INFO L93 Difference]: Finished difference Result 209 states and 367 transitions. [2024-11-24 01:16:22,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:16:22,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 252 [2024-11-24 01:16:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:16:22,253 INFO L225 Difference]: With dead ends: 209 [2024-11-24 01:16:22,253 INFO L226 Difference]: Without dead ends: 102 [2024-11-24 01:16:22,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:16:22,262 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:16:22,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:16:22,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-24 01:16:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-24 01:16:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 60 states have (on average 1.3) internal successors, (78), 60 states have internal predecessors, (78), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-24 01:16:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 158 transitions. [2024-11-24 01:16:22,350 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 158 transitions. Word has length 252 [2024-11-24 01:16:22,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:16:22,351 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 158 transitions. [2024-11-24 01:16:22,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-24 01:16:22,352 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 158 transitions. [2024-11-24 01:16:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 01:16:22,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:16:22,360 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:16:22,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-24 01:16:22,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:16:22,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:16:22,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:16:22,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1694296983, now seen corresponding path program 1 times [2024-11-24 01:16:22,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:16:22,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300113938] [2024-11-24 01:16:22,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:16:22,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:16:22,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:16:22,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 01:16:22,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-24 01:16:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:16:23,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:16:23,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:16:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1445 proven. 150 refuted. 0 times theorem prover too weak. 1525 trivial. 0 not checked. [2024-11-24 01:16:26,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:16:26,412 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:16:26,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300113938] [2024-11-24 01:16:26,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300113938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:16:26,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [291534518] [2024-11-24 01:16:26,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:16:26,413 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:16:26,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:16:26,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:16:26,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-24 01:16:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:16:28,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:16:28,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:16:28,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:16:28,650 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:16:28,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [291534518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:16:28,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:16:28,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-24 01:16:28,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747493043] [2024-11-24 01:16:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:16:28,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:16:28,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:16:28,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:16:28,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:16:28,659 INFO L87 Difference]: Start difference. First operand 102 states and 158 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:16:31,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:16:31,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:16:31,209 INFO L93 Difference]: Finished difference Result 201 states and 313 transitions. [2024-11-24 01:16:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:16:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 252 [2024-11-24 01:16:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:16:31,237 INFO L225 Difference]: With dead ends: 201 [2024-11-24 01:16:31,237 INFO L226 Difference]: Without dead ends: 102 [2024-11-24 01:16:31,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:16:31,240 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:16:31,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 309 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:16:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-24 01:16:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-24 01:16:31,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-24 01:16:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 157 transitions. [2024-11-24 01:16:31,272 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 157 transitions. Word has length 252 [2024-11-24 01:16:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:16:31,276 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 157 transitions. [2024-11-24 01:16:31,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:16:31,279 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 157 transitions. [2024-11-24 01:16:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 01:16:31,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:16:31,291 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:16:31,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:16:31,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-24 01:16:31,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:16:31,693 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:16:31,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:16:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash 911726571, now seen corresponding path program 1 times [2024-11-24 01:16:31,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:16:31,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200257793] [2024-11-24 01:16:31,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:16:31,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:16:31,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:16:31,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 01:16:31,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-24 01:16:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:16:32,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:16:32,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:16:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1445 proven. 150 refuted. 0 times theorem prover too weak. 1525 trivial. 0 not checked. [2024-11-24 01:16:34,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:16:34,999 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:16:35,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200257793] [2024-11-24 01:16:35,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200257793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:16:35,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2019306678] [2024-11-24 01:16:35,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:16:35,000 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:16:35,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:16:35,002 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:16:35,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-24 01:16:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:16:36,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 01:16:36,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:16:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1417 proven. 78 refuted. 0 times theorem prover too weak. 1625 trivial. 0 not checked. [2024-11-24 01:16:37,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:16:38,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2019306678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:16:38,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:16:38,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 12 [2024-11-24 01:16:38,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792808047] [2024-11-24 01:16:38,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:16:38,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:16:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:16:38,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:16:38,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:16:38,039 INFO L87 Difference]: Start difference. First operand 102 states and 157 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 3 states have call successors, (65), 3 states have call predecessors, (65), 5 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2024-11-24 01:16:43,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:16:45,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:16:45,133 INFO L93 Difference]: Finished difference Result 269 states and 403 transitions. [2024-11-24 01:16:45,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:16:45,134 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 3 states have call successors, (65), 3 states have call predecessors, (65), 5 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) Word has length 252 [2024-11-24 01:16:45,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:16:45,138 INFO L225 Difference]: With dead ends: 269 [2024-11-24 01:16:45,138 INFO L226 Difference]: Without dead ends: 170 [2024-11-24 01:16:45,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:16:45,140 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 192 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:16:45,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 614 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-24 01:16:45,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-24 01:16:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 163. [2024-11-24 01:16:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 105 states have (on average 1.2952380952380953) internal successors, (136), 106 states have internal predecessors, (136), 53 states have call successors, (53), 4 states have call predecessors, (53), 4 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-24 01:16:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 242 transitions. [2024-11-24 01:16:45,173 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 242 transitions. Word has length 252 [2024-11-24 01:16:45,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:16:45,174 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 242 transitions. [2024-11-24 01:16:45,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 3 states have call successors, (65), 3 states have call predecessors, (65), 5 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2024-11-24 01:16:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 242 transitions. [2024-11-24 01:16:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 01:16:45,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:16:45,180 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:16:45,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:16:45,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-24 01:16:45,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:16:45,581 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:16:45,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:16:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash 692871853, now seen corresponding path program 1 times [2024-11-24 01:16:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:16:45,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108275823] [2024-11-24 01:16:45,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:16:45,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:16:45,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:16:45,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 01:16:45,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-24 01:16:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:16:46,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:16:46,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:16:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1219 proven. 87 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2024-11-24 01:16:47,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:16:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 30 proven. 87 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-24 01:16:48,397 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:16:48,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108275823] [2024-11-24 01:16:48,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108275823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:16:48,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:16:48,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-24 01:16:48,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955291525] [2024-11-24 01:16:48,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:16:48,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:16:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:16:48,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:16:48,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:16:48,403 INFO L87 Difference]: Start difference. First operand 163 states and 242 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2024-11-24 01:16:52,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:16:53,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:16:53,417 INFO L93 Difference]: Finished difference Result 515 states and 748 transitions. [2024-11-24 01:16:53,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 01:16:53,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 252 [2024-11-24 01:16:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:16:53,423 INFO L225 Difference]: With dead ends: 515 [2024-11-24 01:16:53,424 INFO L226 Difference]: Without dead ends: 355 [2024-11-24 01:16:53,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 496 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:16:53,426 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 170 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:16:53,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 365 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-24 01:16:53,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-24 01:16:53,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 337. [2024-11-24 01:16:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 218 states have (on average 1.275229357798165) internal successors, (278), 220 states have internal predecessors, (278), 106 states have call successors, (106), 12 states have call predecessors, (106), 12 states have return successors, (106), 104 states have call predecessors, (106), 106 states have call successors, (106) [2024-11-24 01:16:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 490 transitions. [2024-11-24 01:16:53,507 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 490 transitions. Word has length 252 [2024-11-24 01:16:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:16:53,509 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 490 transitions. [2024-11-24 01:16:53,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2024-11-24 01:16:53,510 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 490 transitions. [2024-11-24 01:16:53,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 01:16:53,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:16:53,512 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:16:53,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-24 01:16:53,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:16:53,712 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:16:53,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:16:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1827088081, now seen corresponding path program 1 times [2024-11-24 01:16:53,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:16:53,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507631263] [2024-11-24 01:16:53,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:16:53,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:16:53,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:16:53,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 01:16:53,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-24 01:16:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:16:54,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 01:16:54,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:16:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2073 proven. 228 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2024-11-24 01:16:58,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:16:59,987 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:16:59,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507631263] [2024-11-24 01:16:59,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507631263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:16:59,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2090029421] [2024-11-24 01:16:59,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:16:59,988 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:16:59,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:16:59,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:16:59,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-24 01:17:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:17:03,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 01:17:03,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:17:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 2146 proven. 195 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2024-11-24 01:17:10,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:17:14,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2090029421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:17:14,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:17:14,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 33 [2024-11-24 01:17:14,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571654848] [2024-11-24 01:17:14,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:17:14,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 01:17:14,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:17:14,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 01:17:14,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1207, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 01:17:14,976 INFO L87 Difference]: Start difference. First operand 337 states and 490 transitions. Second operand has 33 states, 33 states have (on average 4.181818181818182) internal successors, (138), 30 states have internal predecessors, (138), 11 states have call successors, (80), 11 states have call predecessors, (80), 16 states have return successors, (80), 11 states have call predecessors, (80), 11 states have call successors, (80) [2024-11-24 01:17:31,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-24 01:17:34,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:17:38,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:17:45,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:17:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:17:45,973 INFO L93 Difference]: Finished difference Result 981 states and 1346 transitions. [2024-11-24 01:17:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-24 01:17:46,001 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.181818181818182) internal successors, (138), 30 states have internal predecessors, (138), 11 states have call successors, (80), 11 states have call predecessors, (80), 16 states have return successors, (80), 11 states have call predecessors, (80), 11 states have call successors, (80) Word has length 252 [2024-11-24 01:17:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:17:46,006 INFO L225 Difference]: With dead ends: 981 [2024-11-24 01:17:46,006 INFO L226 Difference]: Without dead ends: 647 [2024-11-24 01:17:46,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2077 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=1319, Invalid=5821, Unknown=0, NotChecked=0, Total=7140 [2024-11-24 01:17:46,011 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 739 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:17:46,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1117 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 20.4s Time] [2024-11-24 01:17:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2024-11-24 01:17:46,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 478. [2024-11-24 01:17:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 307 states have (on average 1.1921824104234529) internal successors, (366), 309 states have internal predecessors, (366), 138 states have call successors, (138), 32 states have call predecessors, (138), 32 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-24 01:17:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 642 transitions. [2024-11-24 01:17:46,098 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 642 transitions. Word has length 252 [2024-11-24 01:17:46,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:17:46,099 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 642 transitions. [2024-11-24 01:17:46,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.181818181818182) internal successors, (138), 30 states have internal predecessors, (138), 11 states have call successors, (80), 11 states have call predecessors, (80), 16 states have return successors, (80), 11 states have call predecessors, (80), 11 states have call successors, (80) [2024-11-24 01:17:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 642 transitions. [2024-11-24 01:17:46,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 01:17:46,102 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:17:46,102 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:17:46,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 01:17:46,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-24 01:17:46,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:17:46,503 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:17:46,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:17:46,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1610717363, now seen corresponding path program 1 times [2024-11-24 01:17:46,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:17:46,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687111213] [2024-11-24 01:17:46,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:17:46,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:17:46,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:17:46,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 01:17:46,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 01:17:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:17:46,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:17:46,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:17:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-24 01:17:50,235 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:17:50,235 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:17:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687111213] [2024-11-24 01:17:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687111213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:17:50,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:17:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:17:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262621484] [2024-11-24 01:17:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:17:50,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:17:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:17:50,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:17:50,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:17:50,237 INFO L87 Difference]: Start difference. First operand 478 states and 642 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:17:52,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:17:57,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:17:57,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:17:57,609 INFO L93 Difference]: Finished difference Result 1170 states and 1604 transitions. [2024-11-24 01:17:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:17:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 252 [2024-11-24 01:17:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:17:57,649 INFO L225 Difference]: With dead ends: 1170 [2024-11-24 01:17:57,649 INFO L226 Difference]: Without dead ends: 824 [2024-11-24 01:17:57,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:17:57,651 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 213 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:17:57,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 497 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-24 01:17:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-24 01:17:57,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 518. [2024-11-24 01:17:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 347 states have (on average 1.2161383285302594) internal successors, (422), 349 states have internal predecessors, (422), 138 states have call successors, (138), 32 states have call predecessors, (138), 32 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-24 01:17:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 698 transitions. [2024-11-24 01:17:57,751 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 698 transitions. Word has length 252 [2024-11-24 01:17:57,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:17:57,752 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 698 transitions. [2024-11-24 01:17:57,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2024-11-24 01:17:57,753 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 698 transitions. [2024-11-24 01:17:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 01:17:57,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:17:57,755 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:17:57,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 01:17:57,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:17:57,956 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:17:57,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:17:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1868882801, now seen corresponding path program 1 times [2024-11-24 01:17:57,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:17:57,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746392766] [2024-11-24 01:17:57,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:17:57,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:17:57,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:17:57,965 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 01:17:57,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/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)] Waiting until timeout for monitored process [2024-11-24 01:17:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:17:58,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 01:17:58,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:18:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1517 proven. 150 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2024-11-24 01:18:11,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:18:19,869 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:18:19,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746392766] [2024-11-24 01:18:19,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746392766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:18:19,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [966655963] [2024-11-24 01:18:19,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:19,870 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:18:19,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:18:19,872 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:18:19,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-24 01:18:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:22,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 01:18:22,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:18:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 1433 proven. 129 refuted. 0 times theorem prover too weak. 1558 trivial. 0 not checked. [2024-11-24 01:18:33,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:18:38,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [966655963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:18:38,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:18:38,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 21 [2024-11-24 01:18:38,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734848411] [2024-11-24 01:18:38,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:18:38,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 01:18:38,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:18:38,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 01:18:38,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 01:18:38,009 INFO L87 Difference]: Start difference. First operand 518 states and 698 transitions. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 20 states have internal predecessors, (99), 5 states have call successors, (49), 5 states have call predecessors, (49), 7 states have return successors, (50), 5 states have call predecessors, (50), 5 states have call successors, (50) [2024-11-24 01:18:47,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:18:50,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:18:53,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:19:08,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:19:14,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:19:16,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 01:19:19,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:19,539 INFO L93 Difference]: Finished difference Result 2158 states and 2812 transitions. [2024-11-24 01:19:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-24 01:19:19,540 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 20 states have internal predecessors, (99), 5 states have call successors, (49), 5 states have call predecessors, (49), 7 states have return successors, (50), 5 states have call predecessors, (50), 5 states have call successors, (50) Word has length 252 [2024-11-24 01:19:19,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:19,551 INFO L225 Difference]: With dead ends: 2158 [2024-11-24 01:19:19,551 INFO L226 Difference]: Without dead ends: 1772 [2024-11-24 01:19:19,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=1427, Invalid=4735, Unknown=0, NotChecked=0, Total=6162 [2024-11-24 01:19:19,556 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 926 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 1897 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 1897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:19,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 1013 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 1897 Invalid, 0 Unknown, 0 Unchecked, 33.0s Time] [2024-11-24 01:19:19,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2024-11-24 01:19:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1480. [2024-11-24 01:19:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 995 states have (on average 1.1798994974874373) internal successors, (1174), 1007 states have internal predecessors, (1174), 368 states have call successors, (368), 116 states have call predecessors, (368), 116 states have return successors, (368), 356 states have call predecessors, (368), 368 states have call successors, (368) [2024-11-24 01:19:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1910 transitions. [2024-11-24 01:19:19,885 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1910 transitions. Word has length 252 [2024-11-24 01:19:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:19,885 INFO L471 AbstractCegarLoop]: Abstraction has 1480 states and 1910 transitions. [2024-11-24 01:19:19,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 20 states have internal predecessors, (99), 5 states have call successors, (49), 5 states have call predecessors, (49), 7 states have return successors, (50), 5 states have call predecessors, (50), 5 states have call successors, (50) [2024-11-24 01:19:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1910 transitions. [2024-11-24 01:19:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 01:19:19,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:19,888 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:19,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/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)] Ended with exit code 0 [2024-11-24 01:19:20,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-24 01:19:20,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:19:20,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:20,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:20,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1870729843, now seen corresponding path program 1 times [2024-11-24 01:19:20,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:19:20,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564914860] [2024-11-24 01:19:20,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:20,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 01:19:20,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 01:19:20,292 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 01:19:20,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e341f013-c822-4a74-9bd5-4818c3e0415c/bin/uautomizer-verify-LYvppIcaGC/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 (13)] Waiting until timeout for monitored process [2024-11-24 01:19:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:20,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-24 01:19:20,887 INFO L279 TraceCheckSpWp]: Computing forward predicates...