./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:19:13,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:19:13,240 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:19:13,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:19:13,246 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:19:13,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:19:13,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:19:13,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:19:13,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:19:13,275 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:19:13,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:19:13,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:19:13,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:19:13,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:19:13,276 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:19:13,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:19:13,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:19:13,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:19:13,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:19:13,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:19:13,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:19:13,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:19:13,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:19:13,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:19:13,277 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:19:13,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:19:13,277 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:19:13,277 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:19:13,278 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:19:13,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:19:13,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:19:13,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:19:13,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:19:13,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:19:13,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:19:13,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:19:13,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:19:13,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:19:13,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:19:13,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:19:13,279 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:19:13,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:19:13,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:19:13,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:19:13,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:19:13,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:19:13,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:19:13,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:19:13,280 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_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d [2024-12-02 06:19:13,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:19:13,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:19:13,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:19:13,547 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:19:13,547 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:19:13,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2024-12-02 06:19:16,202 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/data/f77f726e8/a7d8179cecd1426eb7a9ff85ec884306/FLAG781530c82 [2024-12-02 06:19:16,456 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:19:16,456 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2024-12-02 06:19:16,466 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/data/f77f726e8/a7d8179cecd1426eb7a9ff85ec884306/FLAG781530c82 [2024-12-02 06:19:16,783 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/data/f77f726e8/a7d8179cecd1426eb7a9ff85ec884306 [2024-12-02 06:19:16,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:19:16,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:19:16,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:19:16,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:19:16,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:19:16,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:19:16" (1/1) ... [2024-12-02 06:19:16,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb03654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:16, skipping insertion in model container [2024-12-02 06:19:16,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:19:16" (1/1) ... [2024-12-02 06:19:16,826 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:19:16,969 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_bad9185f-b08d-4f69-b0e5-7463d8f95a85/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i[916,929] [2024-12-02 06:19:17,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:19:17,086 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:19:17,093 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_bad9185f-b08d-4f69-b0e5-7463d8f95a85/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i[916,929] [2024-12-02 06:19:17,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:19:17,169 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:19:17,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17 WrapperNode [2024-12-02 06:19:17,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:19:17,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:19:17,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:19:17,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:19:17,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,188 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,224 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 431 [2024-12-02 06:19:17,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:19:17,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:19:17,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:19:17,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:19:17,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,237 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,261 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 06:19:17,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,277 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:19:17,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:19:17,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:19:17,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:19:17,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (1/1) ... [2024-12-02 06:19:17,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:19:17,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:19:17,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:19:17,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:19:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:19:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 06:19:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 06:19:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:19:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:19:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:19:17,466 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:19:17,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:19:18,184 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2024-12-02 06:19:18,185 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:19:18,197 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:19:18,197 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:19:18,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:19:18 BoogieIcfgContainer [2024-12-02 06:19:18,198 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:19:18,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:19:18,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:19:18,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:19:18,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:19:16" (1/3) ... [2024-12-02 06:19:18,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ecb48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:19:18, skipping insertion in model container [2024-12-02 06:19:18,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:19:17" (2/3) ... [2024-12-02 06:19:18,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ecb48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:19:18, skipping insertion in model container [2024-12-02 06:19:18,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:19:18" (3/3) ... [2024-12-02 06:19:18,207 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-24.i [2024-12-02 06:19:18,222 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:19:18,224 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-24.i that has 2 procedures, 182 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:19:18,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:19:18,288 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;@75a6bdb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:19:18,288 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:19:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 136 states have internal predecessors, (205), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-12-02 06:19:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-12-02 06:19:18,305 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:19:18,305 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:19:18,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:19:18,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:19:18,309 INFO L85 PathProgramCache]: Analyzing trace with hash 999308583, now seen corresponding path program 1 times [2024-12-02 06:19:18,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:19:18,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110743006] [2024-12-02 06:19:18,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:18,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:19:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:19:19,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:19:19,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110743006] [2024-12-02 06:19:19,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110743006] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:19:19,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:19:19,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:19:19,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629369199] [2024-12-02 06:19:19,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:19:19,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:19:19,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:19:19,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:19:19,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:19:19,165 INFO L87 Difference]: Start difference. First operand has 182 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 136 states have internal predecessors, (205), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:19:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:19:19,546 INFO L93 Difference]: Finished difference Result 533 states and 958 transitions. [2024-12-02 06:19:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:19:19,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 298 [2024-12-02 06:19:19,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:19:19,559 INFO L225 Difference]: With dead ends: 533 [2024-12-02 06:19:19,559 INFO L226 Difference]: Without dead ends: 354 [2024-12-02 06:19:19,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:19:19,566 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 219 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:19:19,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 827 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:19:19,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-12-02 06:19:19,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 263. [2024-12-02 06:19:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 172 states have (on average 1.4127906976744187) internal successors, (243), 172 states have internal predecessors, (243), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 06:19:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 419 transitions. [2024-12-02 06:19:19,647 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 419 transitions. Word has length 298 [2024-12-02 06:19:19,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:19:19,648 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 419 transitions. [2024-12-02 06:19:19,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:19:19,649 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 419 transitions. [2024-12-02 06:19:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-12-02 06:19:19,656 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:19:19,656 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:19:19,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:19:19,657 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:19:19,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:19:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1950101936, now seen corresponding path program 1 times [2024-12-02 06:19:19,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:19:19,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185203383] [2024-12-02 06:19:19,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:19,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:19:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:19:19,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:19:19,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185203383] [2024-12-02 06:19:19,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185203383] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:19:19,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:19:19,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:19:19,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982088614] [2024-12-02 06:19:19,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:19:19,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:19:19,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:19:19,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:19:19,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:19:19,959 INFO L87 Difference]: Start difference. First operand 263 states and 419 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:19:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:19:20,129 INFO L93 Difference]: Finished difference Result 597 states and 955 transitions. [2024-12-02 06:19:20,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:19:20,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2024-12-02 06:19:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:19:20,136 INFO L225 Difference]: With dead ends: 597 [2024-12-02 06:19:20,136 INFO L226 Difference]: Without dead ends: 422 [2024-12-02 06:19:20,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:19:20,138 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 250 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:19:20,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 676 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:19:20,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-12-02 06:19:20,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2024-12-02 06:19:20,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 227 states have internal predecessors, (326), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 06:19:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 502 transitions. [2024-12-02 06:19:20,185 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 502 transitions. Word has length 299 [2024-12-02 06:19:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:19:20,186 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 502 transitions. [2024-12-02 06:19:20,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:19:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 502 transitions. [2024-12-02 06:19:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-12-02 06:19:20,194 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:19:20,194 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:19:20,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:19:20,194 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:19:20,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:19:20,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1250126474, now seen corresponding path program 1 times [2024-12-02 06:19:20,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:19:20,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171506776] [2024-12-02 06:19:20,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:20,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:19:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:19:20,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:19:20,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171506776] [2024-12-02 06:19:20,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171506776] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:19:20,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:19:20,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:19:20,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318975653] [2024-12-02 06:19:20,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:19:20,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:19:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:19:20,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:19:20,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:19:20,562 INFO L87 Difference]: Start difference. First operand 318 states and 502 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:19:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:19:20,720 INFO L93 Difference]: Finished difference Result 652 states and 1028 transitions. [2024-12-02 06:19:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:19:20,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2024-12-02 06:19:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:19:20,726 INFO L225 Difference]: With dead ends: 652 [2024-12-02 06:19:20,726 INFO L226 Difference]: Without dead ends: 422 [2024-12-02 06:19:20,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:19:20,728 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 248 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:19:20,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 500 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:19:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-12-02 06:19:20,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2024-12-02 06:19:20,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.3920704845814977) internal successors, (316), 227 states have internal predecessors, (316), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 06:19:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 492 transitions. [2024-12-02 06:19:20,782 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 492 transitions. Word has length 299 [2024-12-02 06:19:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:19:20,783 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 492 transitions. [2024-12-02 06:19:20,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:19:20,784 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 492 transitions. [2024-12-02 06:19:20,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 06:19:20,791 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:19:20,791 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:19:20,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:19:20,792 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:19:20,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:19:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash 103102257, now seen corresponding path program 1 times [2024-12-02 06:19:20,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:19:20,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171341270] [2024-12-02 06:19:20,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:19:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:19:21,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:19:21,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171341270] [2024-12-02 06:19:21,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171341270] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:19:21,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:19:21,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:19:21,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272849183] [2024-12-02 06:19:21,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:19:21,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:19:21,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:19:21,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:19:21,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:19:21,234 INFO L87 Difference]: Start difference. First operand 318 states and 492 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:19:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:19:21,322 INFO L93 Difference]: Finished difference Result 779 states and 1205 transitions. [2024-12-02 06:19:21,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:19:21,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2024-12-02 06:19:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:19:21,327 INFO L225 Difference]: With dead ends: 779 [2024-12-02 06:19:21,327 INFO L226 Difference]: Without dead ends: 549 [2024-12-02 06:19:21,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:19:21,329 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 187 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:19:21,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 535 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:19:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-12-02 06:19:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 545. [2024-12-02 06:19:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 409 states have (on average 1.41320293398533) internal successors, (578), 409 states have internal predecessors, (578), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2024-12-02 06:19:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 842 transitions. [2024-12-02 06:19:21,384 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 842 transitions. Word has length 300 [2024-12-02 06:19:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:19:21,385 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 842 transitions. [2024-12-02 06:19:21,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:19:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 842 transitions. [2024-12-02 06:19:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 06:19:21,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:19:21,390 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:19:21,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:19:21,390 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:19:21,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:19:21,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2140881041, now seen corresponding path program 1 times [2024-12-02 06:19:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:19:21,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286120751] [2024-12-02 06:19:21,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:21,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:19:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:19:23,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:19:23,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286120751] [2024-12-02 06:19:23,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286120751] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:19:23,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:19:23,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 06:19:23,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578713051] [2024-12-02 06:19:23,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:19:23,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 06:19:23,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:19:23,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 06:19:23,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:19:23,673 INFO L87 Difference]: Start difference. First operand 545 states and 842 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2024-12-02 06:19:24,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:19:24,847 INFO L93 Difference]: Finished difference Result 1495 states and 2294 transitions. [2024-12-02 06:19:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:19:24,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 300 [2024-12-02 06:19:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:19:24,855 INFO L225 Difference]: With dead ends: 1495 [2024-12-02 06:19:24,855 INFO L226 Difference]: Without dead ends: 1039 [2024-12-02 06:19:24,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-12-02 06:19:24,858 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 825 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:19:24,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1583 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 06:19:24,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2024-12-02 06:19:24,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 899. [2024-12-02 06:19:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 735 states have (on average 1.4489795918367347) internal successors, (1065), 737 states have internal predecessors, (1065), 158 states have call successors, (158), 5 states have call predecessors, (158), 5 states have return successors, (158), 156 states have call predecessors, (158), 158 states have call successors, (158) [2024-12-02 06:19:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1381 transitions. [2024-12-02 06:19:24,976 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1381 transitions. Word has length 300 [2024-12-02 06:19:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:19:24,976 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 1381 transitions. [2024-12-02 06:19:24,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2024-12-02 06:19:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1381 transitions. [2024-12-02 06:19:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 06:19:24,982 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:19:24,983 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:19:24,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:19:24,983 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:19:24,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:19:24,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2078841427, now seen corresponding path program 1 times [2024-12-02 06:19:24,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:19:24,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633094008] [2024-12-02 06:19:24,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:24,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:19:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-12-02 06:19:25,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:19:25,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633094008] [2024-12-02 06:19:25,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633094008] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:19:25,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521728778] [2024-12-02 06:19:25,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:25,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:19:25,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:19:25,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:19:25,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:19:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:26,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 06:19:26,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:19:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1629 proven. 90 refuted. 0 times theorem prover too weak. 2065 trivial. 0 not checked. [2024-12-02 06:19:27,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:19:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-12-02 06:19:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521728778] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:19:27,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:19:27,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 16 [2024-12-02 06:19:27,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590980020] [2024-12-02 06:19:27,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:19:27,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:19:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:19:27,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:19:27,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:19:27,507 INFO L87 Difference]: Start difference. First operand 899 states and 1381 transitions. Second operand has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2024-12-02 06:19:28,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:19:28,717 INFO L93 Difference]: Finished difference Result 1807 states and 2764 transitions. [2024-12-02 06:19:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:19:28,718 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) Word has length 300 [2024-12-02 06:19:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:19:28,725 INFO L225 Difference]: With dead ends: 1807 [2024-12-02 06:19:28,725 INFO L226 Difference]: Without dead ends: 1151 [2024-12-02 06:19:28,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2024-12-02 06:19:28,727 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 519 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:19:28,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 2345 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 06:19:28,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2024-12-02 06:19:28,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 703. [2024-12-02 06:19:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 566 states have (on average 1.4505300353356891) internal successors, (821), 566 states have internal predecessors, (821), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2024-12-02 06:19:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1085 transitions. [2024-12-02 06:19:28,801 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1085 transitions. Word has length 300 [2024-12-02 06:19:28,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:19:28,802 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1085 transitions. [2024-12-02 06:19:28,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2024-12-02 06:19:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1085 transitions. [2024-12-02 06:19:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 06:19:28,804 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:19:28,804 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:19:28,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:19:29,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 06:19:29,005 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:19:29,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:19:29,006 INFO L85 PathProgramCache]: Analyzing trace with hash 782278957, now seen corresponding path program 1 times [2024-12-02 06:19:29,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:19:29,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899683261] [2024-12-02 06:19:29,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:29,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:19:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:19:29,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:19:29,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899683261] [2024-12-02 06:19:29,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899683261] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:19:29,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:19:29,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:19:29,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288995114] [2024-12-02 06:19:29,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:19:29,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:19:29,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:19:29,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:19:29,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:19:29,816 INFO L87 Difference]: Start difference. First operand 703 states and 1085 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-12-02 06:19:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:19:30,196 INFO L93 Difference]: Finished difference Result 1647 states and 2543 transitions. [2024-12-02 06:19:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:19:30,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 300 [2024-12-02 06:19:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:19:30,202 INFO L225 Difference]: With dead ends: 1647 [2024-12-02 06:19:30,202 INFO L226 Difference]: Without dead ends: 1159 [2024-12-02 06:19:30,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:19:30,204 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 228 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:19:30,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 960 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:19:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-12-02 06:19:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1013. [2024-12-02 06:19:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 786 states have (on average 1.4236641221374047) internal successors, (1119), 786 states have internal predecessors, (1119), 220 states have call successors, (220), 6 states have call predecessors, (220), 6 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2024-12-02 06:19:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1559 transitions. [2024-12-02 06:19:30,255 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1559 transitions. Word has length 300 [2024-12-02 06:19:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:19:30,256 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1559 transitions. [2024-12-02 06:19:30,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-12-02 06:19:30,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1559 transitions. [2024-12-02 06:19:30,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 06:19:30,259 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:19:30,259 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:19:30,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:19:30,260 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:19:30,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:19:30,260 INFO L85 PathProgramCache]: Analyzing trace with hash 844318571, now seen corresponding path program 1 times [2024-12-02 06:19:30,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:19:30,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263458037] [2024-12-02 06:19:30,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:30,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:19:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 81 proven. 171 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2024-12-02 06:19:33,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:19:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263458037] [2024-12-02 06:19:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263458037] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:19:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2368778] [2024-12-02 06:19:33,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:33,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:19:33,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:19:33,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:19:33,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:19:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:33,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 06:19:33,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:19:35,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2596 proven. 111 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2024-12-02 06:19:35,626 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:19:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 141 proven. 114 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2024-12-02 06:19:36,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2368778] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:19:36,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:19:36,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 37 [2024-12-02 06:19:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811126307] [2024-12-02 06:19:36,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:19:36,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 06:19:36,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:19:36,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 06:19:36,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 06:19:36,495 INFO L87 Difference]: Start difference. First operand 1013 states and 1559 transitions. Second operand has 37 states, 33 states have (on average 6.636363636363637) internal successors, (219), 36 states have internal predecessors, (219), 15 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 11 states have call predecessors, (132), 15 states have call successors, (132) [2024-12-02 06:19:49,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:19:49,732 INFO L93 Difference]: Finished difference Result 7229 states and 10784 transitions. [2024-12-02 06:19:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-12-02 06:19:49,733 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 6.636363636363637) internal successors, (219), 36 states have internal predecessors, (219), 15 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 11 states have call predecessors, (132), 15 states have call successors, (132) Word has length 300 [2024-12-02 06:19:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:19:49,758 INFO L225 Difference]: With dead ends: 7229 [2024-12-02 06:19:49,758 INFO L226 Difference]: Without dead ends: 6317 [2024-12-02 06:19:49,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4987 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2660, Invalid=12592, Unknown=0, NotChecked=0, Total=15252 [2024-12-02 06:19:49,767 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 7233 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 2386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7284 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 5855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2386 IncrementalHoareTripleChecker+Valid, 3469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:19:49,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7284 Valid, 3280 Invalid, 5855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2386 Valid, 3469 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-02 06:19:49,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2024-12-02 06:19:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 2431. [2024-12-02 06:19:50,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 1951 states have (on average 1.4085084572014352) internal successors, (2748), 1955 states have internal predecessors, (2748), 448 states have call successors, (448), 31 states have call predecessors, (448), 31 states have return successors, (448), 444 states have call predecessors, (448), 448 states have call successors, (448) [2024-12-02 06:19:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3644 transitions. [2024-12-02 06:19:50,296 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3644 transitions. Word has length 300 [2024-12-02 06:19:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:19:50,296 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 3644 transitions. [2024-12-02 06:19:50,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 6.636363636363637) internal successors, (219), 36 states have internal predecessors, (219), 15 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 11 states have call predecessors, (132), 15 states have call successors, (132) [2024-12-02 06:19:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3644 transitions. [2024-12-02 06:19:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 06:19:50,300 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:19:50,300 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:19:50,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:19:50,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:19:50,501 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:19:50,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:19:50,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1793529643, now seen corresponding path program 1 times [2024-12-02 06:19:50,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:19:50,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454863566] [2024-12-02 06:19:50,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:50,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:19:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-12-02 06:19:51,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:19:51,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454863566] [2024-12-02 06:19:51,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454863566] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:19:51,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416934690] [2024-12-02 06:19:51,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:19:51,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:19:51,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:19:51,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:19:51,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:19:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:19:51,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 06:19:51,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:19:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2001 proven. 324 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2024-12-02 06:19:53,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:20:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 156 proven. 342 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2024-12-02 06:20:53,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416934690] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:20:53,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:20:53,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 17] total 39 [2024-12-02 06:20:53,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897894637] [2024-12-02 06:20:53,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:20:53,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 06:20:53,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:53,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 06:20:53,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1176, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 06:20:53,039 INFO L87 Difference]: Start difference. First operand 2431 states and 3644 transitions. Second operand has 39 states, 36 states have (on average 5.888888888888889) internal successors, (212), 35 states have internal predecessors, (212), 13 states have call successors, (132), 6 states have call predecessors, (132), 13 states have return successors, (132), 12 states have call predecessors, (132), 13 states have call successors, (132) [2024-12-02 06:21:14,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:14,368 INFO L93 Difference]: Finished difference Result 18527 states and 27456 transitions. [2024-12-02 06:21:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-12-02 06:21:14,369 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 5.888888888888889) internal successors, (212), 35 states have internal predecessors, (212), 13 states have call successors, (132), 6 states have call predecessors, (132), 13 states have return successors, (132), 12 states have call predecessors, (132), 13 states have call successors, (132) Word has length 300 [2024-12-02 06:21:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:14,419 INFO L225 Difference]: With dead ends: 18527 [2024-12-02 06:21:14,419 INFO L226 Difference]: Without dead ends: 16221 [2024-12-02 06:21:14,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5748 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=2980, Invalid=12770, Unknown=0, NotChecked=0, Total=15750 [2024-12-02 06:21:14,429 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 6089 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 4984 mSolverCounterSat, 1437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6114 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 6421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1437 IncrementalHoareTripleChecker+Valid, 4984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:14,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6114 Valid, 4001 Invalid, 6421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1437 Valid, 4984 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2024-12-02 06:21:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16221 states. [2024-12-02 06:21:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16221 to 8857. [2024-12-02 06:21:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8857 states, 7191 states have (on average 1.379224030037547) internal successors, (9918), 7213 states have internal predecessors, (9918), 1538 states have call successors, (1538), 127 states have call predecessors, (1538), 127 states have return successors, (1538), 1516 states have call predecessors, (1538), 1538 states have call successors, (1538) [2024-12-02 06:21:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8857 states to 8857 states and 12994 transitions. [2024-12-02 06:21:16,396 INFO L78 Accepts]: Start accepts. Automaton has 8857 states and 12994 transitions. Word has length 300 [2024-12-02 06:21:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:16,396 INFO L471 AbstractCegarLoop]: Abstraction has 8857 states and 12994 transitions. [2024-12-02 06:21:16,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 5.888888888888889) internal successors, (212), 35 states have internal predecessors, (212), 13 states have call successors, (132), 6 states have call predecessors, (132), 13 states have return successors, (132), 12 states have call predecessors, (132), 13 states have call successors, (132) [2024-12-02 06:21:16,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8857 states and 12994 transitions. [2024-12-02 06:21:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-12-02 06:21:16,401 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:16,401 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:16,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:21:16,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:16,602 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:16,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1867588926, now seen corresponding path program 1 times [2024-12-02 06:21:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:16,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512658917] [2024-12-02 06:21:16,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:21:16,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:16,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512658917] [2024-12-02 06:21:16,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512658917] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:16,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:16,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:21:16,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17543787] [2024-12-02 06:21:16,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:16,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:21:16,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:16,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:21:16,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:21:16,819 INFO L87 Difference]: Start difference. First operand 8857 states and 12994 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:21:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:18,400 INFO L93 Difference]: Finished difference Result 18489 states and 27159 transitions. [2024-12-02 06:21:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:21:18,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2024-12-02 06:21:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:18,430 INFO L225 Difference]: With dead ends: 18489 [2024-12-02 06:21:18,430 INFO L226 Difference]: Without dead ends: 10299 [2024-12-02 06:21:18,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:21:18,442 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 58 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 536 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 [2024-12-02 06:21:18,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 536 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:21:18,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10299 states. [2024-12-02 06:21:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10299 to 8857. [2024-12-02 06:21:19,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8857 states, 7191 states have (on average 1.372827145042414) internal successors, (9872), 7213 states have internal predecessors, (9872), 1538 states have call successors, (1538), 127 states have call predecessors, (1538), 127 states have return successors, (1538), 1516 states have call predecessors, (1538), 1538 states have call successors, (1538) [2024-12-02 06:21:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8857 states to 8857 states and 12948 transitions. [2024-12-02 06:21:19,657 INFO L78 Accepts]: Start accepts. Automaton has 8857 states and 12948 transitions. Word has length 300 [2024-12-02 06:21:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:19,658 INFO L471 AbstractCegarLoop]: Abstraction has 8857 states and 12948 transitions. [2024-12-02 06:21:19,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:21:19,658 INFO L276 IsEmpty]: Start isEmpty. Operand 8857 states and 12948 transitions. [2024-12-02 06:21:19,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-12-02 06:21:19,662 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:19,662 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:19,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:21:19,662 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:19,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:19,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2029659106, now seen corresponding path program 1 times [2024-12-02 06:21:19,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:19,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463374667] [2024-12-02 06:21:19,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:19,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:21:20,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:20,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463374667] [2024-12-02 06:21:20,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463374667] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:20,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:20,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:21:20,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058603527] [2024-12-02 06:21:20,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:20,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:21:20,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:20,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:21:20,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:21:20,474 INFO L87 Difference]: Start difference. First operand 8857 states and 12948 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:21:24,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:24,218 INFO L93 Difference]: Finished difference Result 32757 states and 47841 transitions. [2024-12-02 06:21:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:21:24,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2024-12-02 06:21:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:24,257 INFO L225 Difference]: With dead ends: 32757 [2024-12-02 06:21:24,257 INFO L226 Difference]: Without dead ends: 24343 [2024-12-02 06:21:24,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:21:24,272 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 577 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:24,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1743 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 06:21:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24343 states. [2024-12-02 06:21:26,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24343 to 14503. [2024-12-02 06:21:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14503 states, 12310 states have (on average 1.3709179528838342) internal successors, (16876), 12386 states have internal predecessors, (16876), 1984 states have call successors, (1984), 208 states have call predecessors, (1984), 208 states have return successors, (1984), 1908 states have call predecessors, (1984), 1984 states have call successors, (1984) [2024-12-02 06:21:26,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14503 states to 14503 states and 20844 transitions. [2024-12-02 06:21:26,126 INFO L78 Accepts]: Start accepts. Automaton has 14503 states and 20844 transitions. Word has length 301 [2024-12-02 06:21:26,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:26,126 INFO L471 AbstractCegarLoop]: Abstraction has 14503 states and 20844 transitions. [2024-12-02 06:21:26,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:21:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 14503 states and 20844 transitions. [2024-12-02 06:21:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-12-02 06:21:26,132 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:26,132 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:26,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:21:26,132 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:26,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:26,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1518630526, now seen corresponding path program 1 times [2024-12-02 06:21:26,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:26,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623409635] [2024-12-02 06:21:26,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:26,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:21:26,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:26,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623409635] [2024-12-02 06:21:26,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623409635] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:26,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:26,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:21:26,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479821464] [2024-12-02 06:21:26,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:26,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:21:26,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:26,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:21:26,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:21:26,763 INFO L87 Difference]: Start difference. First operand 14503 states and 20844 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-12-02 06:21:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:29,297 INFO L93 Difference]: Finished difference Result 24251 states and 34930 transitions. [2024-12-02 06:21:29,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:21:29,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 301 [2024-12-02 06:21:29,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:29,334 INFO L225 Difference]: With dead ends: 24251 [2024-12-02 06:21:29,334 INFO L226 Difference]: Without dead ends: 17721 [2024-12-02 06:21:29,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:21:29,345 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 522 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:29,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1373 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 06:21:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2024-12-02 06:21:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 14503. [2024-12-02 06:21:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14503 states, 12310 states have (on average 1.3707554833468725) internal successors, (16874), 12386 states have internal predecessors, (16874), 1984 states have call successors, (1984), 208 states have call predecessors, (1984), 208 states have return successors, (1984), 1908 states have call predecessors, (1984), 1984 states have call successors, (1984) [2024-12-02 06:21:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14503 states to 14503 states and 20842 transitions. [2024-12-02 06:21:31,498 INFO L78 Accepts]: Start accepts. Automaton has 14503 states and 20842 transitions. Word has length 301 [2024-12-02 06:21:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:31,498 INFO L471 AbstractCegarLoop]: Abstraction has 14503 states and 20842 transitions. [2024-12-02 06:21:31,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-12-02 06:21:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 14503 states and 20842 transitions. [2024-12-02 06:21:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-12-02 06:21:31,503 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:31,503 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:31,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:21:31,503 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:31,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash -530757316, now seen corresponding path program 1 times [2024-12-02 06:21:31,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:31,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556710231] [2024-12-02 06:21:31,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:31,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:21:32,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:32,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556710231] [2024-12-02 06:21:32,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556710231] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:21:32,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:21:32,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:21:32,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67983374] [2024-12-02 06:21:32,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:21:32,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:21:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:32,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:21:32,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:21:32,423 INFO L87 Difference]: Start difference. First operand 14503 states and 20842 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-12-02 06:21:34,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:34,752 INFO L93 Difference]: Finished difference Result 23579 states and 33946 transitions. [2024-12-02 06:21:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:21:34,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 301 [2024-12-02 06:21:34,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:34,790 INFO L225 Difference]: With dead ends: 23579 [2024-12-02 06:21:34,790 INFO L226 Difference]: Without dead ends: 17057 [2024-12-02 06:21:34,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:21:34,798 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 528 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:34,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1403 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 06:21:34,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17057 states. [2024-12-02 06:21:36,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17057 to 15049. [2024-12-02 06:21:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15049 states, 12856 states have (on average 1.3747666459240822) internal successors, (17674), 12932 states have internal predecessors, (17674), 1984 states have call successors, (1984), 208 states have call predecessors, (1984), 208 states have return successors, (1984), 1908 states have call predecessors, (1984), 1984 states have call successors, (1984) [2024-12-02 06:21:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15049 states to 15049 states and 21642 transitions. [2024-12-02 06:21:36,474 INFO L78 Accepts]: Start accepts. Automaton has 15049 states and 21642 transitions. Word has length 301 [2024-12-02 06:21:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:36,475 INFO L471 AbstractCegarLoop]: Abstraction has 15049 states and 21642 transitions. [2024-12-02 06:21:36,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-12-02 06:21:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 15049 states and 21642 transitions. [2024-12-02 06:21:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 06:21:36,478 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:36,479 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:36,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:21:36,479 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:36,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:36,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1382374907, now seen corresponding path program 1 times [2024-12-02 06:21:36,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:36,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642646512] [2024-12-02 06:21:36,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:36,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-12-02 06:21:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642646512] [2024-12-02 06:21:37,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642646512] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285600855] [2024-12-02 06:21:37,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:37,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:37,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:37,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:37,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:21:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:37,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 06:21:37,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1429 proven. 30 refuted. 0 times theorem prover too weak. 2325 trivial. 0 not checked. [2024-12-02 06:21:37,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:21:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-12-02 06:21:37,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285600855] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:21:37,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:21:37,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-12-02 06:21:37,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395578956] [2024-12-02 06:21:37,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:21:37,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 06:21:37,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:37,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 06:21:37,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-12-02 06:21:37,939 INFO L87 Difference]: Start difference. First operand 15049 states and 21642 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2024-12-02 06:21:40,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:40,315 INFO L93 Difference]: Finished difference Result 25914 states and 37029 transitions. [2024-12-02 06:21:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:21:40,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 302 [2024-12-02 06:21:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:40,342 INFO L225 Difference]: With dead ends: 25914 [2024-12-02 06:21:40,342 INFO L226 Difference]: Without dead ends: 11521 [2024-12-02 06:21:40,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:21:40,358 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 687 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:40,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 476 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:21:40,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2024-12-02 06:21:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 11251. [2024-12-02 06:21:42,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11251 states, 9093 states have (on average 1.3302540415704387) internal successors, (12096), 9161 states have internal predecessors, (12096), 1920 states have call successors, (1920), 237 states have call predecessors, (1920), 237 states have return successors, (1920), 1852 states have call predecessors, (1920), 1920 states have call successors, (1920) [2024-12-02 06:21:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11251 states to 11251 states and 15936 transitions. [2024-12-02 06:21:42,098 INFO L78 Accepts]: Start accepts. Automaton has 11251 states and 15936 transitions. Word has length 302 [2024-12-02 06:21:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:42,099 INFO L471 AbstractCegarLoop]: Abstraction has 11251 states and 15936 transitions. [2024-12-02 06:21:42,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2024-12-02 06:21:42,099 INFO L276 IsEmpty]: Start isEmpty. Operand 11251 states and 15936 transitions. [2024-12-02 06:21:42,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 06:21:42,103 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:42,103 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:42,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:21:42,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 06:21:42,304 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:42,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:42,305 INFO L85 PathProgramCache]: Analyzing trace with hash 589737518, now seen corresponding path program 1 times [2024-12-02 06:21:42,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:42,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854821680] [2024-12-02 06:21:42,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:42,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 87 proven. 165 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2024-12-02 06:22:02,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:22:02,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854821680] [2024-12-02 06:22:02,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854821680] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:22:02,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356485800] [2024-12-02 06:22:02,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:22:02,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:22:02,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:22:02,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:22:02,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:22:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:22:03,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-12-02 06:22:03,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:22:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2232 proven. 450 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2024-12-02 06:22:09,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:22:49,557 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 144 DAG size of output: 58 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 06:22:56,006 WARN L286 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 131 DAG size of output: 68 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 06:23:25,239 WARN L286 SmtUtils]: Spent 27.43s on a formula simplification. DAG size of input: 156 DAG size of output: 64 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 06:23:45,917 WARN L286 SmtUtils]: Spent 15.20s on a formula simplification. DAG size of input: 133 DAG size of output: 64 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 06:23:59,773 WARN L286 SmtUtils]: Spent 12.04s on a formula simplification. DAG size of input: 101 DAG size of output: 55 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-12-02 06:27:01,692 WARN L286 SmtUtils]: Spent 2.24m on a formula simplification. DAG size of input: 488 DAG size of output: 429 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:27:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356485800] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:27:01,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:27:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 33] total 56 [2024-12-02 06:27:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115699308] [2024-12-02 06:27:01,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 06:27:01,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 06:27:01,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:27:01,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 06:27:01,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=4126, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 06:27:01,708 INFO L87 Difference]: Start difference. First operand 11251 states and 15936 transitions. Second operand has 56 states, 54 states have (on average 3.7222222222222223) internal successors, (201), 51 states have internal predecessors, (201), 17 states have call successors, (88), 10 states have call predecessors, (88), 14 states have return successors, (88), 15 states have call predecessors, (88), 17 states have call successors, (88) [2024-12-02 06:27:23,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:27:23,697 INFO L93 Difference]: Finished difference Result 25470 states and 35704 transitions. [2024-12-02 06:27:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-12-02 06:27:23,697 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 3.7222222222222223) internal successors, (201), 51 states have internal predecessors, (201), 17 states have call successors, (88), 10 states have call predecessors, (88), 14 states have return successors, (88), 15 states have call predecessors, (88), 17 states have call successors, (88) Word has length 302 [2024-12-02 06:27:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:27:23,722 INFO L225 Difference]: With dead ends: 25470 [2024-12-02 06:27:23,722 INFO L226 Difference]: Without dead ends: 14880 [2024-12-02 06:27:23,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4232 ImplicationChecksByTransitivity, 161.1s TimeCoverageRelationStatistics Valid=2657, Invalid=14899, Unknown=0, NotChecked=0, Total=17556 [2024-12-02 06:27:23,738 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 6749 mSDsluCounter, 4428 mSDsCounter, 0 mSdLazyCounter, 5706 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6749 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 6449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 5706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:27:23,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6749 Valid, 4598 Invalid, 6449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 5706 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-12-02 06:27:23,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14880 states. [2024-12-02 06:27:25,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14880 to 10341. [2024-12-02 06:27:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10341 states, 8350 states have (on average 1.3253892215568863) internal successors, (11067), 8418 states have internal predecessors, (11067), 1768 states have call successors, (1768), 222 states have call predecessors, (1768), 222 states have return successors, (1768), 1700 states have call predecessors, (1768), 1768 states have call successors, (1768) [2024-12-02 06:27:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10341 states to 10341 states and 14603 transitions. [2024-12-02 06:27:25,403 INFO L78 Accepts]: Start accepts. Automaton has 10341 states and 14603 transitions. Word has length 302 [2024-12-02 06:27:25,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:27:25,404 INFO L471 AbstractCegarLoop]: Abstraction has 10341 states and 14603 transitions. [2024-12-02 06:27:25,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 3.7222222222222223) internal successors, (201), 51 states have internal predecessors, (201), 17 states have call successors, (88), 10 states have call predecessors, (88), 14 states have return successors, (88), 15 states have call predecessors, (88), 17 states have call successors, (88) [2024-12-02 06:27:25,404 INFO L276 IsEmpty]: Start isEmpty. Operand 10341 states and 14603 transitions. [2024-12-02 06:27:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 06:27:25,406 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:27:25,406 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:27:25,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 06:27:25,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 06:27:25,607 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:27:25,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:27:25,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1699674962, now seen corresponding path program 1 times [2024-12-02 06:27:25,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:27:25,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860964011] [2024-12-02 06:27:25,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:27:25,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:27:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 06:27:25,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654582972] [2024-12-02 06:27:25,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:27:25,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:27:25,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:27:25,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:27:25,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:27:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:27:26,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 06:27:26,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:27:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2232 proven. 450 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2024-12-02 06:27:29,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:28:16,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:28:16,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860964011] [2024-12-02 06:28:16,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 06:28:16,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654582972] [2024-12-02 06:28:16,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654582972] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:28:16,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:28:16,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2024-12-02 06:28:16,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912665682] [2024-12-02 06:28:16,262 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 06:28:16,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 06:28:16,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:28:16,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 06:28:16,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1584, Unknown=9, NotChecked=0, Total=1892 [2024-12-02 06:28:16,264 INFO L87 Difference]: Start difference. First operand 10341 states and 14603 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 31 states have internal predecessors, (118), 9 states have call successors, (44), 9 states have call predecessors, (44), 12 states have return successors, (44), 9 states have call predecessors, (44), 9 states have call successors, (44) [2024-12-02 06:28:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:28:30,892 INFO L93 Difference]: Finished difference Result 23283 states and 32778 transitions. [2024-12-02 06:28:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-12-02 06:28:30,892 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 31 states have internal predecessors, (118), 9 states have call successors, (44), 9 states have call predecessors, (44), 12 states have return successors, (44), 9 states have call predecessors, (44), 9 states have call successors, (44) Word has length 302 [2024-12-02 06:28:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:28:30,915 INFO L225 Difference]: With dead ends: 23283 [2024-12-02 06:28:30,915 INFO L226 Difference]: Without dead ends: 13791 [2024-12-02 06:28:30,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=1184, Invalid=5947, Unknown=9, NotChecked=0, Total=7140 [2024-12-02 06:28:30,931 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 1426 mSDsluCounter, 3707 mSDsCounter, 0 mSdLazyCounter, 3243 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 4023 SdHoareTripleChecker+Invalid, 3637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 3243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:28:30,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 4023 Invalid, 3637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 3243 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-12-02 06:28:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13791 states. [2024-12-02 06:28:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13791 to 11059. [2024-12-02 06:28:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11059 states, 8890 states have (on average 1.3200224971878516) internal successors, (11735), 8962 states have internal predecessors, (11735), 1928 states have call successors, (1928), 240 states have call predecessors, (1928), 240 states have return successors, (1928), 1856 states have call predecessors, (1928), 1928 states have call successors, (1928) [2024-12-02 06:28:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11059 states to 11059 states and 15591 transitions. [2024-12-02 06:28:32,904 INFO L78 Accepts]: Start accepts. Automaton has 11059 states and 15591 transitions. Word has length 302 [2024-12-02 06:28:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:28:32,905 INFO L471 AbstractCegarLoop]: Abstraction has 11059 states and 15591 transitions. [2024-12-02 06:28:32,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 31 states have internal predecessors, (118), 9 states have call successors, (44), 9 states have call predecessors, (44), 12 states have return successors, (44), 9 states have call predecessors, (44), 9 states have call successors, (44) [2024-12-02 06:28:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 11059 states and 15591 transitions. [2024-12-02 06:28:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 06:28:32,908 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:28:32,908 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:28:32,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 06:28:33,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 06:28:33,109 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:28:33,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:28:33,109 INFO L85 PathProgramCache]: Analyzing trace with hash 500760822, now seen corresponding path program 1 times [2024-12-02 06:28:33,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:28:33,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333256677] [2024-12-02 06:28:33,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:33,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:28:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:28:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:28:33,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:28:33,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333256677] [2024-12-02 06:28:33,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333256677] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:28:33,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:28:33,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 06:28:33,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630421191] [2024-12-02 06:28:33,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:28:33,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:28:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:28:33,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:28:33,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:28:33,648 INFO L87 Difference]: Start difference. First operand 11059 states and 15591 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:28:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:28:37,628 INFO L93 Difference]: Finished difference Result 28153 states and 39673 transitions. [2024-12-02 06:28:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 06:28:37,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 302 [2024-12-02 06:28:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:28:37,696 INFO L225 Difference]: With dead ends: 28153 [2024-12-02 06:28:37,697 INFO L226 Difference]: Without dead ends: 17801 [2024-12-02 06:28:37,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:28:37,706 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 423 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:28:37,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1594 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 06:28:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17801 states. [2024-12-02 06:28:39,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17801 to 9643. [2024-12-02 06:28:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9643 states, 7724 states have (on average 1.3126618332470223) internal successors, (10139), 7746 states have internal predecessors, (10139), 1678 states have call successors, (1678), 240 states have call predecessors, (1678), 240 states have return successors, (1678), 1656 states have call predecessors, (1678), 1678 states have call successors, (1678) [2024-12-02 06:28:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9643 states to 9643 states and 13495 transitions. [2024-12-02 06:28:39,399 INFO L78 Accepts]: Start accepts. Automaton has 9643 states and 13495 transitions. Word has length 302 [2024-12-02 06:28:39,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:28:39,399 INFO L471 AbstractCegarLoop]: Abstraction has 9643 states and 13495 transitions. [2024-12-02 06:28:39,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:28:39,399 INFO L276 IsEmpty]: Start isEmpty. Operand 9643 states and 13495 transitions. [2024-12-02 06:28:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 06:28:39,401 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:28:39,402 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:28:39,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:28:39,402 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:28:39,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:28:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1199733763, now seen corresponding path program 1 times [2024-12-02 06:28:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:28:39,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866070424] [2024-12-02 06:28:39,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:28:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:28:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 33 proven. 96 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-12-02 06:28:39,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:28:39,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866070424] [2024-12-02 06:28:39,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866070424] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:28:39,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932768503] [2024-12-02 06:28:39,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:39,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:28:39,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:28:39,903 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:28:39,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:28:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:28:40,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 06:28:40,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:28:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1473 proven. 96 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2024-12-02 06:28:42,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:28:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 33 proven. 96 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-12-02 06:28:42,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932768503] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:28:42,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:28:42,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 16 [2024-12-02 06:28:42,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349643648] [2024-12-02 06:28:42,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:28:42,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:28:42,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:28:42,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:28:42,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:28:42,843 INFO L87 Difference]: Start difference. First operand 9643 states and 13495 transitions. Second operand has 16 states, 15 states have (on average 10.666666666666666) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) [2024-12-02 06:28:47,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:28:47,038 INFO L93 Difference]: Finished difference Result 20486 states and 28699 transitions. [2024-12-02 06:28:47,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 06:28:47,038 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 10.666666666666666) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) Word has length 302 [2024-12-02 06:28:47,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:28:47,062 INFO L225 Difference]: With dead ends: 20486 [2024-12-02 06:28:47,062 INFO L226 Difference]: Without dead ends: 12343 [2024-12-02 06:28:47,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:28:47,074 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 841 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:28:47,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 1413 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 06:28:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12343 states. [2024-12-02 06:28:48,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12343 to 9423. [2024-12-02 06:28:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9423 states, 7543 states have (on average 1.309028238101551) internal successors, (9874), 7561 states have internal predecessors, (9874), 1630 states have call successors, (1630), 249 states have call predecessors, (1630), 249 states have return successors, (1630), 1612 states have call predecessors, (1630), 1630 states have call successors, (1630) [2024-12-02 06:28:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9423 states to 9423 states and 13134 transitions. [2024-12-02 06:28:48,812 INFO L78 Accepts]: Start accepts. Automaton has 9423 states and 13134 transitions. Word has length 302 [2024-12-02 06:28:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:28:48,813 INFO L471 AbstractCegarLoop]: Abstraction has 9423 states and 13134 transitions. [2024-12-02 06:28:48,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 10.666666666666666) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) [2024-12-02 06:28:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 9423 states and 13134 transitions. [2024-12-02 06:28:48,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-12-02 06:28:48,815 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:28:48,815 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:28:48,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:28:49,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 06:28:49,015 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:28:49,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:28:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1177101509, now seen corresponding path program 1 times [2024-12-02 06:28:49,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:28:49,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973332180] [2024-12-02 06:28:49,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:49,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:28:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 06:28:49,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803218784] [2024-12-02 06:28:49,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:28:49,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:28:49,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:28:49,272 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:28:49,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:28:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:28:49,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 06:28:49,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:28:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2030 proven. 420 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2024-12-02 06:28:59,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:29:02,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:29:02,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973332180] [2024-12-02 06:29:02,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 06:29:02,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803218784] [2024-12-02 06:29:02,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803218784] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:29:02,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:29:02,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2024-12-02 06:29:02,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998566620] [2024-12-02 06:29:02,653 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 06:29:02,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 06:29:02,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:29:02,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 06:29:02,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 06:29:02,654 INFO L87 Difference]: Start difference. First operand 9423 states and 13134 transitions. Second operand has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 25 states have internal predecessors, (109), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2024-12-02 06:29:22,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 06:29:25,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 06:29:35,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 06:29:42,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 06:29:47,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 06:29:49,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 06:29:51,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 06:29:52,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:29:52,231 INFO L93 Difference]: Finished difference Result 24700 states and 34195 transitions. [2024-12-02 06:29:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 06:29:52,232 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 25 states have internal predecessors, (109), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) Word has length 302 [2024-12-02 06:29:52,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:29:52,259 INFO L225 Difference]: With dead ends: 24700 [2024-12-02 06:29:52,259 INFO L226 Difference]: Without dead ends: 16088 [2024-12-02 06:29:52,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 318 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=706, Invalid=3584, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 06:29:52,271 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 2278 mSDsluCounter, 3402 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 154 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 3773 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:29:52,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 3773 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2873 Invalid, 2 Unknown, 0 Unchecked, 39.6s Time] [2024-12-02 06:29:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16088 states. [2024-12-02 06:29:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16088 to 13149. [2024-12-02 06:29:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13149 states, 10356 states have (on average 1.2917149478563152) internal successors, (13377), 10384 states have internal predecessors, (13377), 2408 states have call successors, (2408), 384 states have call predecessors, (2408), 384 states have return successors, (2408), 2380 states have call predecessors, (2408), 2408 states have call successors, (2408) [2024-12-02 06:29:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13149 states to 13149 states and 18193 transitions. [2024-12-02 06:29:55,003 INFO L78 Accepts]: Start accepts. Automaton has 13149 states and 18193 transitions. Word has length 302 [2024-12-02 06:29:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:29:55,003 INFO L471 AbstractCegarLoop]: Abstraction has 13149 states and 18193 transitions. [2024-12-02 06:29:55,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 25 states have internal predecessors, (109), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2024-12-02 06:29:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 13149 states and 18193 transitions. [2024-12-02 06:29:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-12-02 06:29:55,006 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:29:55,006 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:29:55,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 06:29:55,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:29:55,206 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:29:55,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:29:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1730298315, now seen corresponding path program 1 times [2024-12-02 06:29:55,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:29:55,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28696250] [2024-12-02 06:29:55,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:29:55,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:29:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:29:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-12-02 06:29:56,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:29:56,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28696250] [2024-12-02 06:29:56,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28696250] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:29:56,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:29:56,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:29:56,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421109737] [2024-12-02 06:29:56,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:29:56,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:29:56,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:29:56,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:29:56,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:29:56,821 INFO L87 Difference]: Start difference. First operand 13149 states and 18193 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:30:03,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:03,568 INFO L93 Difference]: Finished difference Result 39594 states and 54705 transitions. [2024-12-02 06:30:03,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:30:03,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 303 [2024-12-02 06:30:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:03,611 INFO L225 Difference]: With dead ends: 39594 [2024-12-02 06:30:03,611 INFO L226 Difference]: Without dead ends: 27660 [2024-12-02 06:30:03,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:30:03,626 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 713 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:03,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 869 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 06:30:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27660 states. [2024-12-02 06:30:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27660 to 21546. [2024-12-02 06:30:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21546 states, 17157 states have (on average 1.3001690272192108) internal successors, (22307), 17215 states have internal predecessors, (22307), 3794 states have call successors, (3794), 594 states have call predecessors, (3794), 594 states have return successors, (3794), 3736 states have call predecessors, (3794), 3794 states have call successors, (3794) [2024-12-02 06:30:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21546 states to 21546 states and 29895 transitions. [2024-12-02 06:30:08,075 INFO L78 Accepts]: Start accepts. Automaton has 21546 states and 29895 transitions. Word has length 303 [2024-12-02 06:30:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:08,075 INFO L471 AbstractCegarLoop]: Abstraction has 21546 states and 29895 transitions. [2024-12-02 06:30:08,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-12-02 06:30:08,075 INFO L276 IsEmpty]: Start isEmpty. Operand 21546 states and 29895 transitions. [2024-12-02 06:30:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-12-02 06:30:08,079 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:08,079 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:08,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 06:30:08,079 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:08,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:08,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1511443597, now seen corresponding path program 1 times [2024-12-02 06:30:08,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:08,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726947655] [2024-12-02 06:30:08,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:08,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 06:30:08,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996659979] [2024-12-02 06:30:08,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:08,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:08,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:08,359 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:30:08,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:30:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:09,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-12-02 06:30:09,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:30:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2190 proven. 300 refuted. 0 times theorem prover too weak. 1294 trivial. 0 not checked. [2024-12-02 06:30:16,885 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:19,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:19,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726947655] [2024-12-02 06:31:19,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 06:31:19,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996659979] [2024-12-02 06:31:19,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996659979] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:19,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:31:19,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2024-12-02 06:31:19,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637714990] [2024-12-02 06:31:19,084 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 06:31:19,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 06:31:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:19,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 06:31:19,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1379, Unknown=5, NotChecked=0, Total=1640 [2024-12-02 06:31:19,085 INFO L87 Difference]: Start difference. First operand 21546 states and 29895 transitions. Second operand has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 24 states have internal predecessors, (110), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) [2024-12-02 06:31:42,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:42,605 INFO L93 Difference]: Finished difference Result 36205 states and 50397 transitions. [2024-12-02 06:31:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 06:31:42,606 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 24 states have internal predecessors, (110), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) Word has length 303 [2024-12-02 06:31:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:42,647 INFO L225 Difference]: With dead ends: 36205 [2024-12-02 06:31:42,647 INFO L226 Difference]: Without dead ends: 23023 [2024-12-02 06:31:42,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 68.5s TimeCoverageRelationStatistics Valid=907, Invalid=4200, Unknown=5, NotChecked=0, Total=5112 [2024-12-02 06:31:42,665 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 1475 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:42,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 2297 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-12-02 06:31:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23023 states. [2024-12-02 06:31:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23023 to 21562. [2024-12-02 06:31:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21562 states, 17172 states have (on average 1.2999068250640577) internal successors, (22322), 17230 states have internal predecessors, (22322), 3794 states have call successors, (3794), 595 states have call predecessors, (3794), 595 states have return successors, (3794), 3736 states have call predecessors, (3794), 3794 states have call successors, (3794) [2024-12-02 06:31:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21562 states to 21562 states and 29910 transitions. [2024-12-02 06:31:47,360 INFO L78 Accepts]: Start accepts. Automaton has 21562 states and 29910 transitions. Word has length 303 [2024-12-02 06:31:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:47,361 INFO L471 AbstractCegarLoop]: Abstraction has 21562 states and 29910 transitions. [2024-12-02 06:31:47,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 24 states have internal predecessors, (110), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) [2024-12-02 06:31:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 21562 states and 29910 transitions. [2024-12-02 06:31:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-12-02 06:31:47,364 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:47,364 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:47,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 06:31:47,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 06:31:47,565 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:47,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:47,565 INFO L85 PathProgramCache]: Analyzing trace with hash 248416162, now seen corresponding path program 1 times [2024-12-02 06:31:47,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:47,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253530729] [2024-12-02 06:31:47,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:47,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 06:31:47,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498137744] [2024-12-02 06:31:47,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:47,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:47,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:47,904 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:47,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 06:31:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:48,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-12-02 06:31:48,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2030 proven. 420 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2024-12-02 06:31:56,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:32:01,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:01,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253530729] [2024-12-02 06:32:01,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 06:32:01,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498137744] [2024-12-02 06:32:01,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498137744] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:32:01,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:32:01,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2024-12-02 06:32:01,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052978745] [2024-12-02 06:32:01,511 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 06:32:01,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 06:32:01,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:01,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 06:32:01,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 06:32:01,512 INFO L87 Difference]: Start difference. First operand 21562 states and 29910 transitions. Second operand has 27 states, 27 states have (on average 4.074074074074074) internal successors, (110), 24 states have internal predecessors, (110), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2024-12-02 06:32:15,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:15,352 INFO L93 Difference]: Finished difference Result 43003 states and 59693 transitions. [2024-12-02 06:32:15,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 06:32:15,353 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.074074074074074) internal successors, (110), 24 states have internal predecessors, (110), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) Word has length 303 [2024-12-02 06:32:15,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:15,398 INFO L225 Difference]: With dead ends: 43003 [2024-12-02 06:32:15,398 INFO L226 Difference]: Without dead ends: 23060 [2024-12-02 06:32:15,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=744, Invalid=3678, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 06:32:15,424 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 1025 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:15,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 2616 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-12-02 06:32:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23060 states. [2024-12-02 06:32:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23060 to 21058. [2024-12-02 06:32:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21058 states, 16668 states have (on average 1.298536117110631) internal successors, (21644), 16726 states have internal predecessors, (21644), 3794 states have call successors, (3794), 595 states have call predecessors, (3794), 595 states have return successors, (3794), 3736 states have call predecessors, (3794), 3794 states have call successors, (3794) [2024-12-02 06:32:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21058 states to 21058 states and 29232 transitions. [2024-12-02 06:32:19,840 INFO L78 Accepts]: Start accepts. Automaton has 21058 states and 29232 transitions. Word has length 303 [2024-12-02 06:32:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:19,840 INFO L471 AbstractCegarLoop]: Abstraction has 21058 states and 29232 transitions. [2024-12-02 06:32:19,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.074074074074074) internal successors, (110), 24 states have internal predecessors, (110), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2024-12-02 06:32:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 21058 states and 29232 transitions. [2024-12-02 06:32:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-12-02 06:32:19,843 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:19,844 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:19,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 06:32:20,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:32:20,044 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:20,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:20,045 INFO L85 PathProgramCache]: Analyzing trace with hash 332963839, now seen corresponding path program 1 times [2024-12-02 06:32:20,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:20,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326053956] [2024-12-02 06:32:20,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:20,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 240 proven. 129 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2024-12-02 06:32:39,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:39,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326053956] [2024-12-02 06:32:39,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326053956] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:32:39,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204974896] [2024-12-02 06:32:39,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:39,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:32:39,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:32:39,080 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:32:39,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bad9185f-b08d-4f69-b0e5-7463d8f95a85/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 06:32:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:39,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 06:32:39,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:32:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2176 proven. 243 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2024-12-02 06:32:46,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:32:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 342 proven. 273 refuted. 0 times theorem prover too weak. 3169 trivial. 0 not checked. [2024-12-02 06:32:58,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204974896] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:32:58,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:32:58,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 25] total 65 [2024-12-02 06:32:58,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624135758] [2024-12-02 06:32:58,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:32:58,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-12-02 06:32:58,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:58,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-12-02 06:32:58,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=3574, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 06:32:58,584 INFO L87 Difference]: Start difference. First operand 21058 states and 29232 transitions. Second operand has 65 states, 60 states have (on average 4.616666666666666) internal successors, (277), 60 states have internal predecessors, (277), 20 states have call successors, (132), 7 states have call predecessors, (132), 16 states have return successors, (132), 17 states have call predecessors, (132), 20 states have call successors, (132)