./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-23.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-23.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 335c920a7f8063d1356e4facb34b19dc621e1dc68b510e52e401c7b0cc4414d4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:18:40,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:18:40,133 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:18:40,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:18:40,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:18:40,196 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:18:40,197 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:18:40,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:18:40,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:18:40,198 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:18:40,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:18:40,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:18:40,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:18:40,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:18:40,201 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:18:40,202 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:18:40,202 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:18:40,202 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:18:40,203 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:18:40,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:18:40,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:18:40,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:18:40,203 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:18:40,203 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:18:40,204 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:18:40,204 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:18:40,204 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:18:40,204 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:18:40,204 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:18:40,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:18:40,205 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:18:40,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:18:40,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:18:40,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:18:40,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:18:40,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:18:40,206 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:18:40,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:18:40,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:18:40,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:18:40,207 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:18:40,207 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:18:40,207 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:18:40,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:18:40,208 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:18:40,208 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:18:40,208 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:18:40,208 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:18:40,208 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_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 335c920a7f8063d1356e4facb34b19dc621e1dc68b510e52e401c7b0cc4414d4 [2024-11-24 01:18:40,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:18:40,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:18:40,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:18:40,597 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:18:40,598 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:18:40,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-23.i [2024-11-24 01:18:44,276 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/data/406ebf52d/750b26e823914ad8bf61593704fe2eb8/FLAG925fe90d7 [2024-11-24 01:18:44,659 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:18:44,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-23.i [2024-11-24 01:18:44,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/data/406ebf52d/750b26e823914ad8bf61593704fe2eb8/FLAG925fe90d7 [2024-11-24 01:18:44,729 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/data/406ebf52d/750b26e823914ad8bf61593704fe2eb8 [2024-11-24 01:18:44,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:18:44,734 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:18:44,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:18:44,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:18:44,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:18:44,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:18:44" (1/1) ... [2024-11-24 01:18:44,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b35d553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:44, skipping insertion in model container [2024-11-24 01:18:44,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:18:44" (1/1) ... [2024-11-24 01:18:44,817 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:18:45,056 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_640d9037-5a8d-489c-9aad-fbd2637c2cd4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-23.i[916,929] [2024-11-24 01:18:45,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:18:45,438 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:18:45,456 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_640d9037-5a8d-489c-9aad-fbd2637c2cd4/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-23.i[916,929] [2024-11-24 01:18:45,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:18:45,689 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:18:45,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45 WrapperNode [2024-11-24 01:18:45,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:18:45,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:18:45,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:18:45,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:18:45,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:45,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:45,918 INFO L138 Inliner]: procedures = 26, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 786 [2024-11-24 01:18:45,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:18:45,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:18:45,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:18:45,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:18:45,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:45,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:45,965 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:46,150 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 01:18:46,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:46,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:46,217 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:46,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:46,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:46,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:46,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:46,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:18:46,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:18:46,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:18:46,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:18:46,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (1/1) ... [2024-11-24 01:18:46,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:18:46,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:18:46,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:18:46,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:18:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:18:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:18:46,384 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:18:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:18:46,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:18:46,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:18:46,635 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:18:46,637 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:18:48,774 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-24 01:18:48,774 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:18:48,806 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:18:48,806 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:18:48,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:48 BoogieIcfgContainer [2024-11-24 01:18:48,806 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:18:48,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:18:48,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:18:48,820 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:18:48,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:18:44" (1/3) ... [2024-11-24 01:18:48,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5987d332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:18:48, skipping insertion in model container [2024-11-24 01:18:48,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:45" (2/3) ... [2024-11-24 01:18:48,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5987d332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:18:48, skipping insertion in model container [2024-11-24 01:18:48,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:48" (3/3) ... [2024-11-24 01:18:48,823 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-23.i [2024-11-24 01:18:48,844 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:18:48,847 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-23.i that has 2 procedures, 321 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:18:48,964 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:18:48,982 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;@672ab8e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:18:48,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:18:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 321 states, 220 states have (on average 1.5863636363636364) internal successors, (349), 221 states have internal predecessors, (349), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-24 01:18:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2024-11-24 01:18:49,058 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:49,059 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:49,060 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:49,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1814652814, now seen corresponding path program 1 times [2024-11-24 01:18:49,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:49,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128021569] [2024-11-24 01:18:49,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:49,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:18:50,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128021569] [2024-11-24 01:18:50,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128021569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:50,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:50,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:18:50,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22627722] [2024-11-24 01:18:50,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:50,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:18:50,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:50,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:18:50,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:18:50,550 INFO L87 Difference]: Start difference. First operand has 321 states, 220 states have (on average 1.5863636363636364) internal successors, (349), 221 states have internal predecessors, (349), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:50,675 INFO L93 Difference]: Finished difference Result 630 states and 1173 transitions. [2024-11-24 01:18:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:18:50,678 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 634 [2024-11-24 01:18:50,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:50,695 INFO L225 Difference]: With dead ends: 630 [2024-11-24 01:18:50,696 INFO L226 Difference]: Without dead ends: 312 [2024-11-24 01:18:50,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:18:50,709 INFO L435 NwaCegarLoop]: 525 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:50,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:50,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-11-24 01:18:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-11-24 01:18:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 212 states have (on average 1.5518867924528301) internal successors, (329), 212 states have internal predecessors, (329), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-24 01:18:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 525 transitions. [2024-11-24 01:18:50,865 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 525 transitions. Word has length 634 [2024-11-24 01:18:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:50,873 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 525 transitions. [2024-11-24 01:18:50,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:50,874 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 525 transitions. [2024-11-24 01:18:50,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2024-11-24 01:18:50,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:50,906 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:50,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:18:50,907 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:50,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:50,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1419150314, now seen corresponding path program 1 times [2024-11-24 01:18:50,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:50,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170445800] [2024-11-24 01:18:50,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:50,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:18:52,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:52,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170445800] [2024-11-24 01:18:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170445800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:52,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:52,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782007312] [2024-11-24 01:18:52,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:52,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:52,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:52,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:52,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:52,263 INFO L87 Difference]: Start difference. First operand 312 states and 525 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:52,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:52,437 INFO L93 Difference]: Finished difference Result 841 states and 1420 transitions. [2024-11-24 01:18:52,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:52,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 635 [2024-11-24 01:18:52,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:52,453 INFO L225 Difference]: With dead ends: 841 [2024-11-24 01:18:52,453 INFO L226 Difference]: Without dead ends: 532 [2024-11-24 01:18:52,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:52,459 INFO L435 NwaCegarLoop]: 523 mSDtfsCounter, 346 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:52,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1031 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-11-24 01:18:52,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 529. [2024-11-24 01:18:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 381 states have (on average 1.5800524934383202) internal successors, (602), 382 states have internal predecessors, (602), 145 states have call successors, (145), 2 states have call predecessors, (145), 2 states have return successors, (145), 144 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-24 01:18:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 892 transitions. [2024-11-24 01:18:52,608 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 892 transitions. Word has length 635 [2024-11-24 01:18:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:52,611 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 892 transitions. [2024-11-24 01:18:52,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 892 transitions. [2024-11-24 01:18:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2024-11-24 01:18:52,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:52,635 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:52,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:18:52,635 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:52,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1863050988, now seen corresponding path program 1 times [2024-11-24 01:18:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:52,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697714038] [2024-11-24 01:18:52,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:18:53,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:53,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697714038] [2024-11-24 01:18:53,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697714038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:53,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:53,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:53,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732221858] [2024-11-24 01:18:53,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:53,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:53,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:53,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:53,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:53,673 INFO L87 Difference]: Start difference. First operand 529 states and 892 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:53,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:53,887 INFO L93 Difference]: Finished difference Result 1579 states and 2668 transitions. [2024-11-24 01:18:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:53,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 635 [2024-11-24 01:18:53,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:53,904 INFO L225 Difference]: With dead ends: 1579 [2024-11-24 01:18:53,904 INFO L226 Difference]: Without dead ends: 1053 [2024-11-24 01:18:53,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:53,908 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 330 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:53,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1014 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:18:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2024-11-24 01:18:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1050. [2024-11-24 01:18:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 755 states have (on average 1.5814569536423841) internal successors, (1194), 757 states have internal predecessors, (1194), 290 states have call successors, (290), 4 states have call predecessors, (290), 4 states have return successors, (290), 288 states have call predecessors, (290), 290 states have call successors, (290) [2024-11-24 01:18:54,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1774 transitions. [2024-11-24 01:18:54,225 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1774 transitions. Word has length 635 [2024-11-24 01:18:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:54,228 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1774 transitions. [2024-11-24 01:18:54,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:54,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1774 transitions. [2024-11-24 01:18:54,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2024-11-24 01:18:54,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:54,243 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:54,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:18:54,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:54,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1836825322, now seen corresponding path program 1 times [2024-11-24 01:18:54,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:54,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221662722] [2024-11-24 01:18:54,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:54,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:18:54,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:54,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221662722] [2024-11-24 01:18:54,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221662722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:54,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:54,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:54,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182764669] [2024-11-24 01:18:54,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:54,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:54,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:54,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:54,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:54,849 INFO L87 Difference]: Start difference. First operand 1050 states and 1774 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:55,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:55,119 INFO L93 Difference]: Finished difference Result 3068 states and 5182 transitions. [2024-11-24 01:18:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 636 [2024-11-24 01:18:55,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:55,148 INFO L225 Difference]: With dead ends: 3068 [2024-11-24 01:18:55,148 INFO L226 Difference]: Without dead ends: 2021 [2024-11-24 01:18:55,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:55,155 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 455 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:55,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1372 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2024-11-24 01:18:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1398. [2024-11-24 01:18:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1103 states have (on average 1.6482320942883046) internal successors, (1818), 1105 states have internal predecessors, (1818), 290 states have call successors, (290), 4 states have call predecessors, (290), 4 states have return successors, (290), 288 states have call predecessors, (290), 290 states have call successors, (290) [2024-11-24 01:18:55,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2398 transitions. [2024-11-24 01:18:55,563 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2398 transitions. Word has length 636 [2024-11-24 01:18:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:55,565 INFO L471 AbstractCegarLoop]: Abstraction has 1398 states and 2398 transitions. [2024-11-24 01:18:55,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2398 transitions. [2024-11-24 01:18:55,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2024-11-24 01:18:55,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:55,576 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:55,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:18:55,577 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:55,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:55,579 INFO L85 PathProgramCache]: Analyzing trace with hash 771962136, now seen corresponding path program 1 times [2024-11-24 01:18:55,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:55,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384407033] [2024-11-24 01:18:55,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:55,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:18:56,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:56,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384407033] [2024-11-24 01:18:56,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384407033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:56,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:56,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:18:56,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244604663] [2024-11-24 01:18:56,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:56,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:18:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:56,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:18:56,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:56,168 INFO L87 Difference]: Start difference. First operand 1398 states and 2398 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:56,414 INFO L93 Difference]: Finished difference Result 3416 states and 5798 transitions. [2024-11-24 01:18:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:56,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 636 [2024-11-24 01:18:56,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:56,438 INFO L225 Difference]: With dead ends: 3416 [2024-11-24 01:18:56,438 INFO L226 Difference]: Without dead ends: 2021 [2024-11-24 01:18:56,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:18:56,445 INFO L435 NwaCegarLoop]: 633 mSDtfsCounter, 442 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:56,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1148 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:18:56,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2024-11-24 01:18:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1398. [2024-11-24 01:18:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1103 states have (on average 1.6409791477787852) internal successors, (1810), 1105 states have internal predecessors, (1810), 290 states have call successors, (290), 4 states have call predecessors, (290), 4 states have return successors, (290), 288 states have call predecessors, (290), 290 states have call successors, (290) [2024-11-24 01:18:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2390 transitions. [2024-11-24 01:18:56,763 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2390 transitions. Word has length 636 [2024-11-24 01:18:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:56,765 INFO L471 AbstractCegarLoop]: Abstraction has 1398 states and 2390 transitions. [2024-11-24 01:18:56,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2390 transitions. [2024-11-24 01:18:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2024-11-24 01:18:56,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:56,776 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:56,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:18:56,777 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:56,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash -916981606, now seen corresponding path program 1 times [2024-11-24 01:18:56,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:56,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190417298] [2024-11-24 01:18:56,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:56,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:18:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:18:57,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:18:57,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190417298] [2024-11-24 01:18:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190417298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:18:57,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:18:57,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:18:57,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795834402] [2024-11-24 01:18:57,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:18:57,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:18:57,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:18:57,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:18:57,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:57,613 INFO L87 Difference]: Start difference. First operand 1398 states and 2390 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:58,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:18:58,021 INFO L93 Difference]: Finished difference Result 2793 states and 4777 transitions. [2024-11-24 01:18:58,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:18:58,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 636 [2024-11-24 01:18:58,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:18:58,042 INFO L225 Difference]: With dead ends: 2793 [2024-11-24 01:18:58,042 INFO L226 Difference]: Without dead ends: 1398 [2024-11-24 01:18:58,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:18:58,049 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 563 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:18:58,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 519 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:18:58,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2024-11-24 01:18:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1398. [2024-11-24 01:18:58,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1103 states have (on average 1.6337262012692657) internal successors, (1802), 1105 states have internal predecessors, (1802), 290 states have call successors, (290), 4 states have call predecessors, (290), 4 states have return successors, (290), 288 states have call predecessors, (290), 290 states have call successors, (290) [2024-11-24 01:18:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2382 transitions. [2024-11-24 01:18:58,307 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2382 transitions. Word has length 636 [2024-11-24 01:18:58,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:18:58,311 INFO L471 AbstractCegarLoop]: Abstraction has 1398 states and 2382 transitions. [2024-11-24 01:18:58,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:18:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2382 transitions. [2024-11-24 01:18:58,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2024-11-24 01:18:58,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:18:58,319 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:18:58,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:18:58,320 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:18:58,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:18:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1814374884, now seen corresponding path program 1 times [2024-11-24 01:18:58,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:18:58,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646680562] [2024-11-24 01:18:58,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:18:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:18:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:19:00,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:00,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646680562] [2024-11-24 01:19:00,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646680562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:00,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:00,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:19:00,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071194552] [2024-11-24 01:19:00,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:00,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:19:00,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:00,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:19:00,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:19:00,135 INFO L87 Difference]: Start difference. First operand 1398 states and 2382 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:19:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:01,706 INFO L93 Difference]: Finished difference Result 4439 states and 7503 transitions. [2024-11-24 01:19:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:19:01,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 636 [2024-11-24 01:19:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:01,731 INFO L225 Difference]: With dead ends: 4439 [2024-11-24 01:19:01,731 INFO L226 Difference]: Without dead ends: 2664 [2024-11-24 01:19:01,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:19:01,738 INFO L435 NwaCegarLoop]: 715 mSDtfsCounter, 1048 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:01,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1719 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:19:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2024-11-24 01:19:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2206. [2024-11-24 01:19:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1691 states have (on average 1.5931401537551744) internal successors, (2694), 1697 states have internal predecessors, (2694), 504 states have call successors, (504), 10 states have call predecessors, (504), 10 states have return successors, (504), 498 states have call predecessors, (504), 504 states have call successors, (504) [2024-11-24 01:19:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 3702 transitions. [2024-11-24 01:19:02,196 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 3702 transitions. Word has length 636 [2024-11-24 01:19:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:02,197 INFO L471 AbstractCegarLoop]: Abstraction has 2206 states and 3702 transitions. [2024-11-24 01:19:02,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:19:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 3702 transitions. [2024-11-24 01:19:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2024-11-24 01:19:02,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:02,207 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:02,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:19:02,208 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:02,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash 291136664, now seen corresponding path program 1 times [2024-11-24 01:19:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:02,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195183621] [2024-11-24 01:19:02,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:19:03,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:03,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195183621] [2024-11-24 01:19:03,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195183621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:03,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:03,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:19:03,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874757149] [2024-11-24 01:19:03,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:03,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:19:03,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:03,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:19:03,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:19:03,191 INFO L87 Difference]: Start difference. First operand 2206 states and 3702 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:19:03,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:03,872 INFO L93 Difference]: Finished difference Result 6616 states and 11108 transitions. [2024-11-24 01:19:03,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:19:03,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 636 [2024-11-24 01:19:03,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:03,912 INFO L225 Difference]: With dead ends: 6616 [2024-11-24 01:19:03,912 INFO L226 Difference]: Without dead ends: 4413 [2024-11-24 01:19:03,922 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 [2024-11-24 01:19:03,924 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 351 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:03,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1523 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:19:03,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2024-11-24 01:19:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4407. [2024-11-24 01:19:04,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4407 states, 3378 states have (on average 1.5926583777383068) internal successors, (5380), 3390 states have internal predecessors, (5380), 1008 states have call successors, (1008), 20 states have call predecessors, (1008), 20 states have return successors, (1008), 996 states have call predecessors, (1008), 1008 states have call successors, (1008) [2024-11-24 01:19:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4407 states to 4407 states and 7396 transitions. [2024-11-24 01:19:04,882 INFO L78 Accepts]: Start accepts. Automaton has 4407 states and 7396 transitions. Word has length 636 [2024-11-24 01:19:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:04,884 INFO L471 AbstractCegarLoop]: Abstraction has 4407 states and 7396 transitions. [2024-11-24 01:19:04,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:19:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4407 states and 7396 transitions. [2024-11-24 01:19:04,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-11-24 01:19:04,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:04,906 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:04,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:19:04,907 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:04,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash 531011115, now seen corresponding path program 1 times [2024-11-24 01:19:04,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:04,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356250879] [2024-11-24 01:19:04,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:04,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:19:07,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:07,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356250879] [2024-11-24 01:19:07,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356250879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:07,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:07,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:19:07,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40065762] [2024-11-24 01:19:07,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:07,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:19:07,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:07,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:19:07,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:19:07,839 INFO L87 Difference]: Start difference. First operand 4407 states and 7396 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:19:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:15,603 INFO L93 Difference]: Finished difference Result 38733 states and 65439 transitions. [2024-11-24 01:19:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:19:15,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 637 [2024-11-24 01:19:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:15,820 INFO L225 Difference]: With dead ends: 38733 [2024-11-24 01:19:15,821 INFO L226 Difference]: Without dead ends: 34329 [2024-11-24 01:19:15,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:19:15,851 INFO L435 NwaCegarLoop]: 702 mSDtfsCounter, 4204 mSDsluCounter, 3296 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 1292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 3998 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1292 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:15,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 3998 Invalid, 2002 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1292 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 01:19:15,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34329 states. [2024-11-24 01:19:18,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34329 to 18877. [2024-11-24 01:19:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18877 states, 15732 states have (on average 1.6374269005847952) internal successors, (25760), 15788 states have internal predecessors, (25760), 3072 states have call successors, (3072), 72 states have call predecessors, (3072), 72 states have return successors, (3072), 3016 states have call predecessors, (3072), 3072 states have call successors, (3072) [2024-11-24 01:19:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18877 states to 18877 states and 31904 transitions. [2024-11-24 01:19:18,965 INFO L78 Accepts]: Start accepts. Automaton has 18877 states and 31904 transitions. Word has length 637 [2024-11-24 01:19:18,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:18,966 INFO L471 AbstractCegarLoop]: Abstraction has 18877 states and 31904 transitions. [2024-11-24 01:19:18,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:19:18,968 INFO L276 IsEmpty]: Start isEmpty. Operand 18877 states and 31904 transitions. [2024-11-24 01:19:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-11-24 01:19:18,998 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:18,999 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:18,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:19:18,999 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:19,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash 396997609, now seen corresponding path program 1 times [2024-11-24 01:19:19,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:19,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006214788] [2024-11-24 01:19:19,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:19,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:19:20,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:20,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006214788] [2024-11-24 01:19:20,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006214788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:20,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:20,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:19:20,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574656844] [2024-11-24 01:19:20,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:20,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:19:20,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:20,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:19:20,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:19:20,760 INFO L87 Difference]: Start difference. First operand 18877 states and 31904 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:19:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:25,599 INFO L93 Difference]: Finished difference Result 54635 states and 91599 transitions. [2024-11-24 01:19:25,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:19:25,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 637 [2024-11-24 01:19:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:25,829 INFO L225 Difference]: With dead ends: 54635 [2024-11-24 01:19:25,829 INFO L226 Difference]: Without dead ends: 35761 [2024-11-24 01:19:25,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:19:25,906 INFO L435 NwaCegarLoop]: 665 mSDtfsCounter, 671 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:25,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1714 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:19:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35761 states. [2024-11-24 01:19:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35761 to 35325. [2024-11-24 01:19:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35325 states, 27764 states have (on average 1.5850741968016135) internal successors, (44008), 27916 states have internal predecessors, (44008), 7360 states have call successors, (7360), 200 states have call predecessors, (7360), 200 states have return successors, (7360), 7208 states have call predecessors, (7360), 7360 states have call successors, (7360) [2024-11-24 01:19:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35325 states to 35325 states and 58728 transitions. [2024-11-24 01:19:30,874 INFO L78 Accepts]: Start accepts. Automaton has 35325 states and 58728 transitions. Word has length 637 [2024-11-24 01:19:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:30,876 INFO L471 AbstractCegarLoop]: Abstraction has 35325 states and 58728 transitions. [2024-11-24 01:19:30,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:19:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 35325 states and 58728 transitions. [2024-11-24 01:19:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-11-24 01:19:30,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:30,922 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:30,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:19:30,923 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:30,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1917796525, now seen corresponding path program 1 times [2024-11-24 01:19:30,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:30,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959233668] [2024-11-24 01:19:30,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:30,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:19:32,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:32,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959233668] [2024-11-24 01:19:32,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959233668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:19:32,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:19:32,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:19:32,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150662205] [2024-11-24 01:19:32,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:19:32,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:19:32,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:32,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:19:32,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:19:32,019 INFO L87 Difference]: Start difference. First operand 35325 states and 58728 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:19:38,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:38,497 INFO L93 Difference]: Finished difference Result 103917 states and 172810 transitions. [2024-11-24 01:19:38,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:19:38,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 637 [2024-11-24 01:19:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:38,897 INFO L225 Difference]: With dead ends: 103917 [2024-11-24 01:19:38,897 INFO L226 Difference]: Without dead ends: 68595 [2024-11-24 01:19:39,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:19:39,001 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 357 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:39,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1767 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:19:39,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68595 states. [2024-11-24 01:19:46,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68595 to 68481. [2024-11-24 01:19:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68481 states, 54680 states have (on average 1.5933430870519385) internal successors, (87124), 54992 states have internal predecessors, (87124), 13408 states have call successors, (13408), 392 states have call predecessors, (13408), 392 states have return successors, (13408), 13096 states have call predecessors, (13408), 13408 states have call successors, (13408) [2024-11-24 01:19:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68481 states to 68481 states and 113940 transitions. [2024-11-24 01:19:47,160 INFO L78 Accepts]: Start accepts. Automaton has 68481 states and 113940 transitions. Word has length 637 [2024-11-24 01:19:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:19:47,162 INFO L471 AbstractCegarLoop]: Abstraction has 68481 states and 113940 transitions. [2024-11-24 01:19:47,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:19:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 68481 states and 113940 transitions. [2024-11-24 01:19:47,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-11-24 01:19:47,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:19:47,220 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:19:47,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:19:47,220 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:19:47,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:19:47,221 INFO L85 PathProgramCache]: Analyzing trace with hash 41313707, now seen corresponding path program 1 times [2024-11-24 01:19:47,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:19:47,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038210091] [2024-11-24 01:19:47,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:47,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:19:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 177 proven. 114 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-24 01:19:49,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:19:49,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038210091] [2024-11-24 01:19:49,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038210091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:19:49,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918856066] [2024-11-24 01:19:49,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:19:49,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:19:49,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:19:49,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:19:49,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:19:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:19:49,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:19:49,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:19:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 5943 proven. 54 refuted. 0 times theorem prover too weak. 13015 trivial. 0 not checked. [2024-11-24 01:19:50,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:19:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 237 proven. 54 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-24 01:19:52,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918856066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:19:52,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:19:52,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-24 01:19:52,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139048621] [2024-11-24 01:19:52,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:19:52,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:19:52,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:19:52,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:19:52,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:19:52,158 INFO L87 Difference]: Start difference. First operand 68481 states and 113940 transitions. Second operand has 9 states, 9 states have (on average 33.55555555555556) internal successors, (302), 9 states have internal predecessors, (302), 4 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (156), 4 states have call predecessors, (156), 4 states have call successors, (156) [2024-11-24 01:19:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:19:57,531 INFO L93 Difference]: Finished difference Result 107327 states and 177853 transitions. [2024-11-24 01:19:57,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 01:19:57,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.55555555555556) internal successors, (302), 9 states have internal predecessors, (302), 4 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (156), 4 states have call predecessors, (156), 4 states have call successors, (156) Word has length 637 [2024-11-24 01:19:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:19:57,807 INFO L225 Difference]: With dead ends: 107327 [2024-11-24 01:19:57,808 INFO L226 Difference]: Without dead ends: 38769 [2024-11-24 01:19:57,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 1271 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:19:57,978 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 1042 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:19:57,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 1029 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 01:19:58,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38769 states. [2024-11-24 01:20:01,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38769 to 28777. [2024-11-24 01:20:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28777 states, 24288 states have (on average 1.6111660079051384) internal successors, (39132), 24376 states have internal predecessors, (39132), 4336 states have call successors, (4336), 152 states have call predecessors, (4336), 152 states have return successors, (4336), 4248 states have call predecessors, (4336), 4336 states have call successors, (4336) [2024-11-24 01:20:01,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28777 states to 28777 states and 47804 transitions. [2024-11-24 01:20:01,595 INFO L78 Accepts]: Start accepts. Automaton has 28777 states and 47804 transitions. Word has length 637 [2024-11-24 01:20:01,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:20:01,596 INFO L471 AbstractCegarLoop]: Abstraction has 28777 states and 47804 transitions. [2024-11-24 01:20:01,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.55555555555556) internal successors, (302), 9 states have internal predecessors, (302), 4 states have call successors, (154), 2 states have call predecessors, (154), 4 states have return successors, (156), 4 states have call predecessors, (156), 4 states have call successors, (156) [2024-11-24 01:20:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 28777 states and 47804 transitions. [2024-11-24 01:20:01,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-11-24 01:20:01,622 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:20:01,622 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:20:01,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:20:01,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:20:01,826 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:20:01,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:20:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash -394359801, now seen corresponding path program 1 times [2024-11-24 01:20:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:20:01,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242819250] [2024-11-24 01:20:01,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:01,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:20:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:20:02,520 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2024-11-24 01:20:02,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:20:02,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242819250] [2024-11-24 01:20:02,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242819250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:20:02,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:20:02,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:20:02,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429009615] [2024-11-24 01:20:02,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:20:02,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:20:02,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:20:02,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:20:02,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:20:02,523 INFO L87 Difference]: Start difference. First operand 28777 states and 47804 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:20:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:20:08,285 INFO L93 Difference]: Finished difference Result 86325 states and 143406 transitions. [2024-11-24 01:20:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:20:08,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 638 [2024-11-24 01:20:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:20:08,579 INFO L225 Difference]: With dead ends: 86325 [2024-11-24 01:20:08,579 INFO L226 Difference]: Without dead ends: 57551 [2024-11-24 01:20:08,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:20:08,666 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 299 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:20:08,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 989 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:20:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57551 states. [2024-11-24 01:20:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57551 to 57549. [2024-11-24 01:20:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57549 states, 48572 states have (on average 1.606604628180845) internal successors, (78036), 48748 states have internal predecessors, (78036), 8672 states have call successors, (8672), 304 states have call predecessors, (8672), 304 states have return successors, (8672), 8496 states have call predecessors, (8672), 8672 states have call successors, (8672) [2024-11-24 01:20:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57549 states to 57549 states and 95380 transitions. [2024-11-24 01:20:13,889 INFO L78 Accepts]: Start accepts. Automaton has 57549 states and 95380 transitions. Word has length 638 [2024-11-24 01:20:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:20:13,889 INFO L471 AbstractCegarLoop]: Abstraction has 57549 states and 95380 transitions. [2024-11-24 01:20:13,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2024-11-24 01:20:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 57549 states and 95380 transitions. [2024-11-24 01:20:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2024-11-24 01:20:13,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:20:13,932 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:20:13,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:20:13,932 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:20:13,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:20:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1746740624, now seen corresponding path program 1 times [2024-11-24 01:20:13,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:20:13,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821335790] [2024-11-24 01:20:13,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:13,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:20:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:20:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 162 proven. 129 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-24 01:20:15,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:20:15,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821335790] [2024-11-24 01:20:15,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821335790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:20:15,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748799895] [2024-11-24 01:20:15,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:15,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:20:15,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:20:15,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:20:15,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:20:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:20:15,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:20:15,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:20:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7623 proven. 78 refuted. 0 times theorem prover too weak. 11311 trivial. 0 not checked. [2024-11-24 01:20:16,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:20:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 213 proven. 78 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-24 01:20:17,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748799895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:20:17,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:20:17,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2024-11-24 01:20:17,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073011487] [2024-11-24 01:20:17,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:20:17,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:20:17,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:20:17,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:20:17,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:20:17,288 INFO L87 Difference]: Start difference. First operand 57549 states and 95380 transitions. Second operand has 13 states, 13 states have (on average 21.923076923076923) internal successors, (285), 13 states have internal predecessors, (285), 4 states have call successors, (167), 2 states have call predecessors, (167), 4 states have return successors, (169), 4 states have call predecessors, (169), 4 states have call successors, (169) [2024-11-24 01:20:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:20:24,762 INFO L93 Difference]: Finished difference Result 103110 states and 169622 transitions. [2024-11-24 01:20:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-24 01:20:24,762 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.923076923076923) internal successors, (285), 13 states have internal predecessors, (285), 4 states have call successors, (167), 2 states have call predecessors, (167), 4 states have return successors, (169), 4 states have call predecessors, (169), 4 states have call successors, (169) Word has length 639 [2024-11-24 01:20:24,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:20:24,945 INFO L225 Difference]: With dead ends: 103110 [2024-11-24 01:20:24,945 INFO L226 Difference]: Without dead ends: 45564 [2024-11-24 01:20:25,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1306 GetRequests, 1273 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=327, Invalid=863, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:20:25,048 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 1957 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 1209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:20:25,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 1999 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1209 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 01:20:25,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45564 states. [2024-11-24 01:20:28,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45564 to 27470. [2024-11-24 01:20:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27470 states, 23347 states have (on average 1.5796033751659742) internal successors, (36879), 23400 states have internal predecessors, (36879), 3870 states have call successors, (3870), 252 states have call predecessors, (3870), 252 states have return successors, (3870), 3817 states have call predecessors, (3870), 3870 states have call successors, (3870) [2024-11-24 01:20:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27470 states to 27470 states and 44619 transitions. [2024-11-24 01:20:28,736 INFO L78 Accepts]: Start accepts. Automaton has 27470 states and 44619 transitions. Word has length 639 [2024-11-24 01:20:28,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:20:28,736 INFO L471 AbstractCegarLoop]: Abstraction has 27470 states and 44619 transitions. [2024-11-24 01:20:28,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.923076923076923) internal successors, (285), 13 states have internal predecessors, (285), 4 states have call successors, (167), 2 states have call predecessors, (167), 4 states have return successors, (169), 4 states have call predecessors, (169), 4 states have call successors, (169) [2024-11-24 01:20:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand 27470 states and 44619 transitions. [2024-11-24 01:20:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2024-11-24 01:20:28,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:20:28,756 INFO L218 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:20:28,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:20:28,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:20:28,956 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:20:28,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:20:28,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1442449328, now seen corresponding path program 1 times [2024-11-24 01:20:28,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:20:28,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941463705] [2024-11-24 01:20:28,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:28,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:20:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:20:30,348 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 183 proven. 108 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2024-11-24 01:20:30,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:20:30,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941463705] [2024-11-24 01:20:30,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941463705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:20:30,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917821884] [2024-11-24 01:20:30,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:20:30,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:20:30,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:20:30,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:20:30,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_640d9037-5a8d-489c-9aad-fbd2637c2cd4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process