./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c --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_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/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_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/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_eb3eca0b-0058-4573-87ac-f528669970f6/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 e5878b7d2af5fd4b66050c0dbed52215fb6ea8477622dc26391a98be7bc7f1ca --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:21:09,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:21:09,415 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:21:09,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:21:09,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:21:09,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:21:09,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:21:09,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:21:09,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:21:09,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:21:09,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:21:09,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:21:09,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:21:09,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:21:09,474 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:21:09,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:21:09,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:21:09,474 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:21:09,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:21:09,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:21:09,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:21:09,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:21:09,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:21:09,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:21:09,475 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:21:09,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:21:09,476 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:21:09,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:21:09,476 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:21:09,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:21:09,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:21:09,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:21:09,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:21:09,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:21:09,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:21:09,478 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:21:09,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:21:09,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:21:09,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:21:09,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:21:09,478 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:21:09,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:21:09,479 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:21:09,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:21:09,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:21:09,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:21:09,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:21:09,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:21:09,479 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_eb3eca0b-0058-4573-87ac-f528669970f6/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 -> e5878b7d2af5fd4b66050c0dbed52215fb6ea8477622dc26391a98be7bc7f1ca [2024-11-23 18:21:09,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:21:09,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:21:09,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:21:09,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:21:09,771 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:21:09,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2024-11-23 18:21:12,588 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/data/e031722a7/ab301eb1ab4946c9bd49b97fe0e53786/FLAG6bc7714b6 [2024-11-23 18:21:12,893 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:21:12,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/sv-benchmarks/c/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2024-11-23 18:21:12,910 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/data/e031722a7/ab301eb1ab4946c9bd49b97fe0e53786/FLAG6bc7714b6 [2024-11-23 18:21:12,931 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/data/e031722a7/ab301eb1ab4946c9bd49b97fe0e53786 [2024-11-23 18:21:12,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:21:12,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:21:12,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:21:12,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:21:12,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:21:12,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:21:12" (1/1) ... [2024-11-23 18:21:12,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2c4a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:12, skipping insertion in model container [2024-11-23 18:21:12,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:21:12" (1/1) ... [2024-11-23 18:21:12,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:21:13,233 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_eb3eca0b-0058-4573-87ac-f528669970f6/sv-benchmarks/c/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2024-11-23 18:21:13,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:21:13,250 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:21:13,308 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_eb3eca0b-0058-4573-87ac-f528669970f6/sv-benchmarks/c/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2024-11-23 18:21:13,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:21:13,329 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:21:13,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13 WrapperNode [2024-11-23 18:21:13,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:21:13,332 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:21:13,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:21:13,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:21:13,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,387 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 219 [2024-11-23 18:21:13,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:21:13,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:21:13,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:21:13,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:21:13,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,405 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,428 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]. [2024-11-23 18:21:13,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,437 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:21:13,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:21:13,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:21:13,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:21:13,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (1/1) ... [2024-11-23 18:21:13,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:21:13,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:13,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:21:13,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:21:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:21:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:21:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:21:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:21:13,624 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:21:13,626 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:21:14,020 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-23 18:21:14,021 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:21:14,031 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:21:14,031 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:21:14,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:21:14 BoogieIcfgContainer [2024-11-23 18:21:14,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:21:14,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:21:14,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:21:14,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:21:14,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:21:12" (1/3) ... [2024-11-23 18:21:14,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f94eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:21:14, skipping insertion in model container [2024-11-23 18:21:14,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:21:13" (2/3) ... [2024-11-23 18:21:14,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f94eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:21:14, skipping insertion in model container [2024-11-23 18:21:14,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:21:14" (3/3) ... [2024-11-23 18:21:14,043 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2024-11-23 18:21:14,063 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:21:14,064 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c that has 1 procedures, 56 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:21:14,135 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:21:14,153 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;@3ca44d2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:21:14,153 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:21:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 55 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:14,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-23 18:21:14,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:14,163 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:14,163 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:14,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:14,172 INFO L85 PathProgramCache]: Analyzing trace with hash 904518825, now seen corresponding path program 1 times [2024-11-23 18:21:14,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:14,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968428756] [2024-11-23 18:21:14,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:14,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:14,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:14,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968428756] [2024-11-23 18:21:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968428756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:14,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:14,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:21:14,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905070236] [2024-11-23 18:21:14,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:14,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:21:14,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:14,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:21:14,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:21:14,454 INFO L87 Difference]: Start difference. First operand has 56 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 55 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:14,470 INFO L93 Difference]: Finished difference Result 87 states and 143 transitions. [2024-11-23 18:21:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:21:14,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-23 18:21:14,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:14,477 INFO L225 Difference]: With dead ends: 87 [2024-11-23 18:21:14,477 INFO L226 Difference]: Without dead ends: 52 [2024-11-23 18:21:14,480 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 [2024-11-23 18:21:14,482 INFO L435 NwaCegarLoop]: 85 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, 85 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 [2024-11-23 18:21:14,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:21:14,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-23 18:21:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-23 18:21:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 51 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 85 transitions. [2024-11-23 18:21:14,515 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 85 transitions. Word has length 19 [2024-11-23 18:21:14,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:14,517 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 85 transitions. [2024-11-23 18:21:14,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:14,517 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 85 transitions. [2024-11-23 18:21:14,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-23 18:21:14,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:14,518 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:14,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:21:14,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:14,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:14,521 INFO L85 PathProgramCache]: Analyzing trace with hash -106598425, now seen corresponding path program 1 times [2024-11-23 18:21:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:14,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444445187] [2024-11-23 18:21:14,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:14,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:14,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:14,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444445187] [2024-11-23 18:21:14,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444445187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:14,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:14,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:21:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927368478] [2024-11-23 18:21:14,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:14,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:21:14,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:14,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:21:14,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:21:14,872 INFO L87 Difference]: Start difference. First operand 52 states and 85 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:14,949 INFO L93 Difference]: Finished difference Result 86 states and 136 transitions. [2024-11-23 18:21:14,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:21:14,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-23 18:21:14,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:14,951 INFO L225 Difference]: With dead ends: 86 [2024-11-23 18:21:14,951 INFO L226 Difference]: Without dead ends: 52 [2024-11-23 18:21:14,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:21:14,952 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:14,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 311 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:21:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-23 18:21:14,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-23 18:21:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 51 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 69 transitions. [2024-11-23 18:21:14,961 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 69 transitions. Word has length 19 [2024-11-23 18:21:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:14,962 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 69 transitions. [2024-11-23 18:21:14,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 69 transitions. [2024-11-23 18:21:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-23 18:21:14,964 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:14,964 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:14,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:21:14,965 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:14,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1681437636, now seen corresponding path program 1 times [2024-11-23 18:21:14,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:14,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502372236] [2024-11-23 18:21:14,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:14,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:15,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502372236] [2024-11-23 18:21:15,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502372236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:15,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:15,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:21:15,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016372212] [2024-11-23 18:21:15,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:15,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:21:15,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:15,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:21:15,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:21:15,198 INFO L87 Difference]: Start difference. First operand 52 states and 69 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:15,404 INFO L93 Difference]: Finished difference Result 232 states and 351 transitions. [2024-11-23 18:21:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:21:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-23 18:21:15,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:15,407 INFO L225 Difference]: With dead ends: 232 [2024-11-23 18:21:15,407 INFO L226 Difference]: Without dead ends: 202 [2024-11-23 18:21:15,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:21:15,408 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 272 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:15,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 426 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:21:15,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-23 18:21:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 80. [2024-11-23 18:21:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 79 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:15,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 113 transitions. [2024-11-23 18:21:15,420 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 113 transitions. Word has length 34 [2024-11-23 18:21:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:15,421 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 113 transitions. [2024-11-23 18:21:15,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 113 transitions. [2024-11-23 18:21:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-23 18:21:15,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:15,422 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:15,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:21:15,422 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:15,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash -461836524, now seen corresponding path program 1 times [2024-11-23 18:21:15,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:15,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725069725] [2024-11-23 18:21:15,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:15,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:15,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725069725] [2024-11-23 18:21:15,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725069725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:15,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:15,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:21:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730059200] [2024-11-23 18:21:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:15,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:15,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:15,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:15,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:21:15,586 INFO L87 Difference]: Start difference. First operand 80 states and 113 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:15,619 INFO L93 Difference]: Finished difference Result 185 states and 276 transitions. [2024-11-23 18:21:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-23 18:21:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:15,625 INFO L225 Difference]: With dead ends: 185 [2024-11-23 18:21:15,625 INFO L226 Difference]: Without dead ends: 127 [2024-11-23 18:21:15,625 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 [2024-11-23 18:21:15,626 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 27 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:15,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 109 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:21:15,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-23 18:21:15,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-23 18:21:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4596774193548387) internal successors, (181), 124 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 181 transitions. [2024-11-23 18:21:15,645 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 181 transitions. Word has length 36 [2024-11-23 18:21:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:15,646 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 181 transitions. [2024-11-23 18:21:15,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 181 transitions. [2024-11-23 18:21:15,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-23 18:21:15,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:15,647 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:15,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:21:15,647 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:15,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash -395343012, now seen corresponding path program 1 times [2024-11-23 18:21:15,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:15,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190250913] [2024-11-23 18:21:15,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:15,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190250913] [2024-11-23 18:21:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190250913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:15,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:21:15,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11876641] [2024-11-23 18:21:15,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:15,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:21:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:15,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:21:15,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:21:15,972 INFO L87 Difference]: Start difference. First operand 125 states and 181 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:16,079 INFO L93 Difference]: Finished difference Result 230 states and 341 transitions. [2024-11-23 18:21:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:21:16,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-23 18:21:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:16,081 INFO L225 Difference]: With dead ends: 230 [2024-11-23 18:21:16,081 INFO L226 Difference]: Without dead ends: 127 [2024-11-23 18:21:16,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:21:16,082 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 68 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:16,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 153 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:21:16,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-23 18:21:16,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-23 18:21:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4435483870967742) internal successors, (179), 124 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 179 transitions. [2024-11-23 18:21:16,094 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 179 transitions. Word has length 36 [2024-11-23 18:21:16,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:16,094 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 179 transitions. [2024-11-23 18:21:16,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 179 transitions. [2024-11-23 18:21:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-23 18:21:16,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:16,097 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:16,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:21:16,097 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:16,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:16,097 INFO L85 PathProgramCache]: Analyzing trace with hash 214545292, now seen corresponding path program 1 times [2024-11-23 18:21:16,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:16,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880014727] [2024-11-23 18:21:16,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:16,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:16,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880014727] [2024-11-23 18:21:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880014727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:16,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:16,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 18:21:16,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416104836] [2024-11-23 18:21:16,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:16,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:21:16,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:16,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:21:16,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:21:16,494 INFO L87 Difference]: Start difference. First operand 125 states and 179 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:16,557 INFO L93 Difference]: Finished difference Result 133 states and 188 transitions. [2024-11-23 18:21:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:21:16,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-23 18:21:16,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:16,559 INFO L225 Difference]: With dead ends: 133 [2024-11-23 18:21:16,559 INFO L226 Difference]: Without dead ends: 131 [2024-11-23 18:21:16,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:21:16,560 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:16,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 428 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:21:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-23 18:21:16,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-23 18:21:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4153846153846155) internal successors, (184), 130 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 184 transitions. [2024-11-23 18:21:16,570 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 184 transitions. Word has length 37 [2024-11-23 18:21:16,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:16,571 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 184 transitions. [2024-11-23 18:21:16,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,571 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 184 transitions. [2024-11-23 18:21:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 18:21:16,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:16,572 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:16,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:21:16,573 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:16,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:16,573 INFO L85 PathProgramCache]: Analyzing trace with hash -63465668, now seen corresponding path program 1 times [2024-11-23 18:21:16,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:16,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533974962] [2024-11-23 18:21:16,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:16,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:16,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:16,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533974962] [2024-11-23 18:21:16,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533974962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:16,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:16,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:21:16,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011965687] [2024-11-23 18:21:16,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:16,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:16,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:16,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:16,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:21:16,671 INFO L87 Difference]: Start difference. First operand 131 states and 184 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:16,693 INFO L93 Difference]: Finished difference Result 253 states and 365 transitions. [2024-11-23 18:21:16,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:16,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-23 18:21:16,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:16,698 INFO L225 Difference]: With dead ends: 253 [2024-11-23 18:21:16,698 INFO L226 Difference]: Without dead ends: 189 [2024-11-23 18:21:16,699 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 [2024-11-23 18:21:16,702 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 37 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:16,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 149 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:21:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-23 18:21:16,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2024-11-23 18:21:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.424731182795699) internal successors, (265), 186 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 265 transitions. [2024-11-23 18:21:16,725 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 265 transitions. Word has length 38 [2024-11-23 18:21:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:16,725 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 265 transitions. [2024-11-23 18:21:16,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 265 transitions. [2024-11-23 18:21:16,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 18:21:16,730 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:16,731 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:16,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:21:16,731 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:16,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:16,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2016032828, now seen corresponding path program 1 times [2024-11-23 18:21:16,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:16,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224983343] [2024-11-23 18:21:16,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:16,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:16,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:16,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:16,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224983343] [2024-11-23 18:21:16,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224983343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:16,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:16,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:21:16,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996674294] [2024-11-23 18:21:16,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:16,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:16,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:16,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:16,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:21:16,833 INFO L87 Difference]: Start difference. First operand 187 states and 265 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:16,871 INFO L93 Difference]: Finished difference Result 489 states and 705 transitions. [2024-11-23 18:21:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:16,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-23 18:21:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:16,873 INFO L225 Difference]: With dead ends: 489 [2024-11-23 18:21:16,874 INFO L226 Difference]: Without dead ends: 326 [2024-11-23 18:21:16,874 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 [2024-11-23 18:21:16,875 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 35 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:16,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 155 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:21:16,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-23 18:21:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 324. [2024-11-23 18:21:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.414860681114551) internal successors, (457), 323 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 457 transitions. [2024-11-23 18:21:16,909 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 457 transitions. Word has length 38 [2024-11-23 18:21:16,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:16,909 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 457 transitions. [2024-11-23 18:21:16,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 457 transitions. [2024-11-23 18:21:16,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 18:21:16,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:16,911 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:16,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 18:21:16,911 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:16,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:16,912 INFO L85 PathProgramCache]: Analyzing trace with hash -498001604, now seen corresponding path program 1 times [2024-11-23 18:21:16,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:16,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031966073] [2024-11-23 18:21:16,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:16,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:16,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:16,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031966073] [2024-11-23 18:21:16,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031966073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:16,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:16,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:21:16,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338990877] [2024-11-23 18:21:16,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:16,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:16,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:16,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:17,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:21:17,000 INFO L87 Difference]: Start difference. First operand 324 states and 457 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:17,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:17,034 INFO L93 Difference]: Finished difference Result 876 states and 1239 transitions. [2024-11-23 18:21:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:17,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-23 18:21:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:17,038 INFO L225 Difference]: With dead ends: 876 [2024-11-23 18:21:17,038 INFO L226 Difference]: Without dead ends: 576 [2024-11-23 18:21:17,041 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 [2024-11-23 18:21:17,042 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 33 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:17,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:21:17,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-23 18:21:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2024-11-23 18:21:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.3839441535776615) internal successors, (793), 573 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 793 transitions. [2024-11-23 18:21:17,080 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 793 transitions. Word has length 38 [2024-11-23 18:21:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:17,080 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 793 transitions. [2024-11-23 18:21:17,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 793 transitions. [2024-11-23 18:21:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-23 18:21:17,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:17,084 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:17,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:21:17,084 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:17,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash 201693929, now seen corresponding path program 1 times [2024-11-23 18:21:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511692822] [2024-11-23 18:21:17,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:17,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:21:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511692822] [2024-11-23 18:21:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511692822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:17,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:17,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:21:17,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995780884] [2024-11-23 18:21:17,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:17,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:21:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:17,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:21:17,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:21:17,293 INFO L87 Difference]: Start difference. First operand 574 states and 793 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:17,458 INFO L93 Difference]: Finished difference Result 2206 states and 3069 transitions. [2024-11-23 18:21:17,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:21:17,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-23 18:21:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:17,468 INFO L225 Difference]: With dead ends: 2206 [2024-11-23 18:21:17,468 INFO L226 Difference]: Without dead ends: 1804 [2024-11-23 18:21:17,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:21:17,471 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 159 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:17,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 294 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:21:17,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2024-11-23 18:21:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1050. [2024-11-23 18:21:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1049 states have (on average 1.3813155386081983) internal successors, (1449), 1049 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1449 transitions. [2024-11-23 18:21:17,575 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1449 transitions. Word has length 53 [2024-11-23 18:21:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:17,575 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1449 transitions. [2024-11-23 18:21:17,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1449 transitions. [2024-11-23 18:21:17,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-23 18:21:17,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:17,577 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:17,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 18:21:17,577 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:17,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2013774871, now seen corresponding path program 1 times [2024-11-23 18:21:17,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:17,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199615231] [2024-11-23 18:21:17,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:17,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:21:17,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:17,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199615231] [2024-11-23 18:21:17,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199615231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:17,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:17,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:21:17,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759490541] [2024-11-23 18:21:17,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:17,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:21:17,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:17,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:21:17,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:21:17,787 INFO L87 Difference]: Start difference. First operand 1050 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:17,976 INFO L93 Difference]: Finished difference Result 2754 states and 3829 transitions. [2024-11-23 18:21:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:21:17,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-23 18:21:17,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:17,986 INFO L225 Difference]: With dead ends: 2754 [2024-11-23 18:21:17,986 INFO L226 Difference]: Without dead ends: 2204 [2024-11-23 18:21:17,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:21:17,989 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 163 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:17,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 269 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:21:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2024-11-23 18:21:18,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1798. [2024-11-23 18:21:18,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1797 states have (on average 1.3784084585420144) internal successors, (2477), 1797 states have internal predecessors, (2477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2477 transitions. [2024-11-23 18:21:18,086 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2477 transitions. Word has length 53 [2024-11-23 18:21:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:18,087 INFO L471 AbstractCegarLoop]: Abstraction has 1798 states and 2477 transitions. [2024-11-23 18:21:18,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:18,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2477 transitions. [2024-11-23 18:21:18,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-23 18:21:18,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:18,089 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:18,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:21:18,089 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:18,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash -232842007, now seen corresponding path program 1 times [2024-11-23 18:21:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:18,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811040220] [2024-11-23 18:21:18,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:18,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 18:21:18,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:18,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811040220] [2024-11-23 18:21:18,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811040220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:18,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:18,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:21:18,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640403960] [2024-11-23 18:21:18,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:18,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:21:18,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:18,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:21:18,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:21:18,245 INFO L87 Difference]: Start difference. First operand 1798 states and 2477 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:18,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:18,420 INFO L93 Difference]: Finished difference Result 3302 states and 4585 transitions. [2024-11-23 18:21:18,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:21:18,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-23 18:21:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:18,432 INFO L225 Difference]: With dead ends: 3302 [2024-11-23 18:21:18,433 INFO L226 Difference]: Without dead ends: 2752 [2024-11-23 18:21:18,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:21:18,438 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 167 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:18,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 280 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:21:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2024-11-23 18:21:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2346. [2024-11-23 18:21:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2345 states have (on average 1.378678038379531) internal successors, (3233), 2345 states have internal predecessors, (3233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3233 transitions. [2024-11-23 18:21:18,562 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3233 transitions. Word has length 53 [2024-11-23 18:21:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:18,563 INFO L471 AbstractCegarLoop]: Abstraction has 2346 states and 3233 transitions. [2024-11-23 18:21:18,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3233 transitions. [2024-11-23 18:21:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-23 18:21:18,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:18,564 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:18,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 18:21:18,564 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:18,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1948699024, now seen corresponding path program 1 times [2024-11-23 18:21:18,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:18,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673281889] [2024-11-23 18:21:18,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:18,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:18,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:18,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673281889] [2024-11-23 18:21:18,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673281889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:18,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:18,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:21:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332377078] [2024-11-23 18:21:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:18,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:18,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:18,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:18,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:21:18,672 INFO L87 Difference]: Start difference. First operand 2346 states and 3233 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:18,760 INFO L93 Difference]: Finished difference Result 4670 states and 6443 transitions. [2024-11-23 18:21:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-23 18:21:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:18,770 INFO L225 Difference]: With dead ends: 4670 [2024-11-23 18:21:18,771 INFO L226 Difference]: Without dead ends: 2348 [2024-11-23 18:21:18,773 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 [2024-11-23 18:21:18,775 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:18,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 144 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:21:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2024-11-23 18:21:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2346. [2024-11-23 18:21:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 2345 states have (on average 1.3573560767590618) internal successors, (3183), 2345 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 3183 transitions. [2024-11-23 18:21:18,876 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 3183 transitions. Word has length 54 [2024-11-23 18:21:18,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:18,878 INFO L471 AbstractCegarLoop]: Abstraction has 2346 states and 3183 transitions. [2024-11-23 18:21:18,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 3183 transitions. [2024-11-23 18:21:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-23 18:21:18,879 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:18,879 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:18,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 18:21:18,879 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:18,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:18,880 INFO L85 PathProgramCache]: Analyzing trace with hash 443391553, now seen corresponding path program 1 times [2024-11-23 18:21:18,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:18,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707834331] [2024-11-23 18:21:18,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:18,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:18,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:18,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707834331] [2024-11-23 18:21:18,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707834331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:18,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:18,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:21:18,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24689575] [2024-11-23 18:21:18,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:18,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:18,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:18,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:21:18,980 INFO L87 Difference]: Start difference. First operand 2346 states and 3183 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:19,030 INFO L93 Difference]: Finished difference Result 3265 states and 4443 transitions. [2024-11-23 18:21:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:19,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-23 18:21:19,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:19,034 INFO L225 Difference]: With dead ends: 3265 [2024-11-23 18:21:19,034 INFO L226 Difference]: Without dead ends: 943 [2024-11-23 18:21:19,036 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 [2024-11-23 18:21:19,037 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 23 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:19,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 141 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:21:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-23 18:21:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 935. [2024-11-23 18:21:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 934 states have (on average 1.3468950749464668) internal successors, (1258), 934 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:19,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1258 transitions. [2024-11-23 18:21:19,098 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1258 transitions. Word has length 55 [2024-11-23 18:21:19,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:19,098 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1258 transitions. [2024-11-23 18:21:19,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1258 transitions. [2024-11-23 18:21:19,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-23 18:21:19,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:19,100 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:19,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 18:21:19,100 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:19,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1656493662, now seen corresponding path program 1 times [2024-11-23 18:21:19,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:19,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984590251] [2024-11-23 18:21:19,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:19,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:19,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:19,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984590251] [2024-11-23 18:21:19,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984590251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:21:19,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:21:19,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:21:19,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533961437] [2024-11-23 18:21:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:21:19,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:21:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:19,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:21:19,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:21:19,195 INFO L87 Difference]: Start difference. First operand 935 states and 1258 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:19,224 INFO L93 Difference]: Finished difference Result 1389 states and 1872 transitions. [2024-11-23 18:21:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:21:19,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-23 18:21:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:19,226 INFO L225 Difference]: With dead ends: 1389 [2024-11-23 18:21:19,227 INFO L226 Difference]: Without dead ends: 487 [2024-11-23 18:21:19,228 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 [2024-11-23 18:21:19,228 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 25 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:19,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 120 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:21:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-23 18:21:19,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2024-11-23 18:21:19,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.3161157024793388) internal successors, (637), 484 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 637 transitions. [2024-11-23 18:21:19,249 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 637 transitions. Word has length 56 [2024-11-23 18:21:19,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:19,249 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 637 transitions. [2024-11-23 18:21:19,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 637 transitions. [2024-11-23 18:21:19,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-23 18:21:19,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:19,251 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:19,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 18:21:19,251 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:19,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:19,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2139764684, now seen corresponding path program 1 times [2024-11-23 18:21:19,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:19,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322343362] [2024-11-23 18:21:19,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:19,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:20,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:20,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322343362] [2024-11-23 18:21:20,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322343362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:20,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169925695] [2024-11-23 18:21:20,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:20,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:20,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:20,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:21:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:20,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 18:21:20,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:21:21,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 18:21:21,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169925695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:21,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:21,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-23 18:21:21,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505219859] [2024-11-23 18:21:21,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:21,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 18:21:21,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:21,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 18:21:21,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-23 18:21:21,487 INFO L87 Difference]: Start difference. First operand 485 states and 637 transitions. Second operand has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 19 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:23,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:23,865 INFO L93 Difference]: Finished difference Result 2787 states and 3660 transitions. [2024-11-23 18:21:23,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-23 18:21:23,866 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 19 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-23 18:21:23,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:23,874 INFO L225 Difference]: With dead ends: 2787 [2024-11-23 18:21:23,874 INFO L226 Difference]: Without dead ends: 2335 [2024-11-23 18:21:23,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=562, Invalid=2518, Unknown=0, NotChecked=0, Total=3080 [2024-11-23 18:21:23,877 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 934 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:23,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 483 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:21:23,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2024-11-23 18:21:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2217. [2024-11-23 18:21:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 2216 states have (on average 1.263537906137184) internal successors, (2800), 2216 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 2800 transitions. [2024-11-23 18:21:23,967 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 2800 transitions. Word has length 58 [2024-11-23 18:21:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:23,968 INFO L471 AbstractCegarLoop]: Abstraction has 2217 states and 2800 transitions. [2024-11-23 18:21:23,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 19 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 2800 transitions. [2024-11-23 18:21:23,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 18:21:23,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:23,969 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:23,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:21:24,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 18:21:24,170 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:24,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash -676295907, now seen corresponding path program 1 times [2024-11-23 18:21:24,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:24,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035006000] [2024-11-23 18:21:24,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:24,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:24,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:24,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035006000] [2024-11-23 18:21:24,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035006000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:24,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382348901] [2024-11-23 18:21:24,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:24,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:24,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:24,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:24,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:21:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:24,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 18:21:24,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:25,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:26,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382348901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:26,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:26,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-23 18:21:26,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840829745] [2024-11-23 18:21:26,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:26,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 18:21:26,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:26,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 18:21:26,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-23 18:21:26,313 INFO L87 Difference]: Start difference. First operand 2217 states and 2800 transitions. Second operand has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 21 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:26,777 INFO L93 Difference]: Finished difference Result 5775 states and 7311 transitions. [2024-11-23 18:21:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 18:21:26,778 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 21 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-23 18:21:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:26,789 INFO L225 Difference]: With dead ends: 5775 [2024-11-23 18:21:26,790 INFO L226 Difference]: Without dead ends: 3811 [2024-11-23 18:21:26,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2024-11-23 18:21:26,793 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 672 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:26,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 294 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:21:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2024-11-23 18:21:26,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 3807. [2024-11-23 18:21:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3806 states have (on average 1.2569626904887021) internal successors, (4784), 3806 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 4784 transitions. [2024-11-23 18:21:26,941 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 4784 transitions. Word has length 59 [2024-11-23 18:21:26,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:26,941 INFO L471 AbstractCegarLoop]: Abstraction has 3807 states and 4784 transitions. [2024-11-23 18:21:26,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7272727272727275) internal successors, (126), 21 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:26,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 4784 transitions. [2024-11-23 18:21:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 18:21:26,944 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:26,944 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:26,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 18:21:27,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 18:21:27,148 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:27,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:27,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1889442531, now seen corresponding path program 1 times [2024-11-23 18:21:27,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:27,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552197525] [2024-11-23 18:21:27,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:27,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:28,245 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:28,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:28,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552197525] [2024-11-23 18:21:28,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552197525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:28,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696532459] [2024-11-23 18:21:28,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:28,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:28,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:28,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:28,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:21:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:28,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 18:21:28,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:28,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696532459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:29,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-23 18:21:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368049044] [2024-11-23 18:21:29,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:29,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-23 18:21:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:29,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-23 18:21:29,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-11-23 18:21:29,753 INFO L87 Difference]: Start difference. First operand 3807 states and 4784 transitions. Second operand has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 25 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:30,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:30,367 INFO L93 Difference]: Finished difference Result 6965 states and 8787 transitions. [2024-11-23 18:21:30,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 18:21:30,368 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 25 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-23 18:21:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:30,380 INFO L225 Difference]: With dead ends: 6965 [2024-11-23 18:21:30,380 INFO L226 Difference]: Without dead ends: 3997 [2024-11-23 18:21:30,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=312, Invalid=1094, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 18:21:30,385 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 597 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:30,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 298 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:21:30,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2024-11-23 18:21:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3707. [2024-11-23 18:21:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3707 states, 3706 states have (on average 1.2393416082029143) internal successors, (4593), 3706 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3707 states to 3707 states and 4593 transitions. [2024-11-23 18:21:30,541 INFO L78 Accepts]: Start accepts. Automaton has 3707 states and 4593 transitions. Word has length 59 [2024-11-23 18:21:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:30,541 INFO L471 AbstractCegarLoop]: Abstraction has 3707 states and 4593 transitions. [2024-11-23 18:21:30,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 25 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3707 states and 4593 transitions. [2024-11-23 18:21:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-23 18:21:30,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:30,543 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:30,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 18:21:30,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 18:21:30,747 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:30,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash -910303857, now seen corresponding path program 1 times [2024-11-23 18:21:30,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:30,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979052396] [2024-11-23 18:21:30,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:31,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:31,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979052396] [2024-11-23 18:21:31,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979052396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:31,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544080554] [2024-11-23 18:21:31,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:31,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:31,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:31,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:31,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:21:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:31,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-23 18:21:31,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:32,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:32,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544080554] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:32,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:32,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2024-11-23 18:21:32,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055877636] [2024-11-23 18:21:32,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:32,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-23 18:21:32,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:32,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-23 18:21:32,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2024-11-23 18:21:32,972 INFO L87 Difference]: Start difference. First operand 3707 states and 4593 transitions. Second operand has 30 states, 30 states have (on average 5.4) internal successors, (162), 30 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:36,495 INFO L93 Difference]: Finished difference Result 10418 states and 12912 transitions. [2024-11-23 18:21:36,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-23 18:21:36,496 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.4) internal successors, (162), 30 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-23 18:21:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:36,516 INFO L225 Difference]: With dead ends: 10418 [2024-11-23 18:21:36,516 INFO L226 Difference]: Without dead ends: 7250 [2024-11-23 18:21:36,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=931, Invalid=3899, Unknown=0, NotChecked=0, Total=4830 [2024-11-23 18:21:36,522 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 1487 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:36,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1000 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 18:21:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7250 states. [2024-11-23 18:21:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7250 to 6254. [2024-11-23 18:21:36,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6254 states, 6253 states have (on average 1.2208539900847593) internal successors, (7634), 6253 states have internal predecessors, (7634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6254 states to 6254 states and 7634 transitions. [2024-11-23 18:21:36,859 INFO L78 Accepts]: Start accepts. Automaton has 6254 states and 7634 transitions. Word has length 59 [2024-11-23 18:21:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:36,864 INFO L471 AbstractCegarLoop]: Abstraction has 6254 states and 7634 transitions. [2024-11-23 18:21:36,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.4) internal successors, (162), 30 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:36,864 INFO L276 IsEmpty]: Start isEmpty. Operand 6254 states and 7634 transitions. [2024-11-23 18:21:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-23 18:21:36,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:36,865 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:36,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:21:37,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:37,066 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:37,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash -960442930, now seen corresponding path program 1 times [2024-11-23 18:21:37,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:37,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785993671] [2024-11-23 18:21:37,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:37,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:37,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785993671] [2024-11-23 18:21:37,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785993671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:37,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716619469] [2024-11-23 18:21:37,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:37,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:37,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:37,851 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:37,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:21:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:38,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-23 18:21:38,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:40,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:21:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716619469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:21:44,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:21:44,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24, 19] total 53 [2024-11-23 18:21:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461852468] [2024-11-23 18:21:44,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:21:44,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-23 18:21:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:21:44,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-23 18:21:44,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=2394, Unknown=0, NotChecked=0, Total=2756 [2024-11-23 18:21:44,459 INFO L87 Difference]: Start difference. First operand 6254 states and 7634 transitions. Second operand has 53 states, 53 states have (on average 3.1320754716981134) internal successors, (166), 53 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:56,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:21:56,177 INFO L93 Difference]: Finished difference Result 8396 states and 10303 transitions. [2024-11-23 18:21:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-23 18:21:56,178 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.1320754716981134) internal successors, (166), 53 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-23 18:21:56,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:21:56,189 INFO L225 Difference]: With dead ends: 8396 [2024-11-23 18:21:56,189 INFO L226 Difference]: Without dead ends: 4919 [2024-11-23 18:21:56,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3319 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=2731, Invalid=10841, Unknown=0, NotChecked=0, Total=13572 [2024-11-23 18:21:56,195 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 2345 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 18:21:56,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 1444 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 18:21:56,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2024-11-23 18:21:56,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4609. [2024-11-23 18:21:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 4608 states have (on average 1.2180989583333333) internal successors, (5613), 4608 states have internal predecessors, (5613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 5613 transitions. [2024-11-23 18:21:56,428 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 5613 transitions. Word has length 60 [2024-11-23 18:21:56,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:21:56,428 INFO L471 AbstractCegarLoop]: Abstraction has 4609 states and 5613 transitions. [2024-11-23 18:21:56,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.1320754716981134) internal successors, (166), 53 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:21:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 5613 transitions. [2024-11-23 18:21:56,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-23 18:21:56,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:21:56,430 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:21:56,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 18:21:56,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:56,634 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:21:56,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:21:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash -494193176, now seen corresponding path program 1 times [2024-11-23 18:21:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:21:56,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336267841] [2024-11-23 18:21:56,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:21:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:58,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:21:58,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336267841] [2024-11-23 18:21:58,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336267841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:21:58,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735401907] [2024-11-23 18:21:58,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:21:58,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:21:58,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:21:58,041 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:21:58,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 18:21:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:21:58,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 18:21:58,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:21:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:21:59,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:22:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:00,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735401907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:22:00,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:22:00,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 38 [2024-11-23 18:22:00,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125365340] [2024-11-23 18:22:00,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:22:00,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-23 18:22:00,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:22:00,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-23 18:22:00,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 18:22:00,639 INFO L87 Difference]: Start difference. First operand 4609 states and 5613 transitions. Second operand has 38 states, 38 states have (on average 3.973684210526316) internal successors, (151), 38 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:22:06,966 INFO L93 Difference]: Finished difference Result 12115 states and 14984 transitions. [2024-11-23 18:22:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-23 18:22:06,967 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.973684210526316) internal successors, (151), 38 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-23 18:22:06,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:22:06,982 INFO L225 Difference]: With dead ends: 12115 [2024-11-23 18:22:06,982 INFO L226 Difference]: Without dead ends: 9720 [2024-11-23 18:22:06,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1404, Invalid=4916, Unknown=0, NotChecked=0, Total=6320 [2024-11-23 18:22:06,986 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 2795 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2795 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:22:06,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2795 Valid, 1466 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 18:22:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9720 states. [2024-11-23 18:22:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9720 to 3368. [2024-11-23 18:22:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 3367 states have (on average 1.2177012177012176) internal successors, (4100), 3367 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4100 transitions. [2024-11-23 18:22:07,190 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4100 transitions. Word has length 62 [2024-11-23 18:22:07,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:22:07,191 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 4100 transitions. [2024-11-23 18:22:07,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.973684210526316) internal successors, (151), 38 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4100 transitions. [2024-11-23 18:22:07,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 18:22:07,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:22:07,193 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:22:07,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 18:22:07,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-23 18:22:07,394 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:22:07,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:22:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash -651141410, now seen corresponding path program 1 times [2024-11-23 18:22:07,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:22:07,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739723486] [2024-11-23 18:22:07,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:07,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:22:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 39 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:08,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:22:08,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739723486] [2024-11-23 18:22:08,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739723486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:22:08,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523839013] [2024-11-23 18:22:08,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:08,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:22:08,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:22:08,381 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:22:08,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 18:22:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:08,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-23 18:22:08,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:22:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 43 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:09,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:22:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 39 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:11,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523839013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:22:11,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:22:11,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2024-11-23 18:22:11,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60985264] [2024-11-23 18:22:11,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:22:11,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-23 18:22:11,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:22:11,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-23 18:22:11,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2024-11-23 18:22:11,407 INFO L87 Difference]: Start difference. First operand 3368 states and 4100 transitions. Second operand has 31 states, 31 states have (on average 7.387096774193548) internal successors, (229), 30 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:22:13,258 INFO L93 Difference]: Finished difference Result 5304 states and 6487 transitions. [2024-11-23 18:22:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 18:22:13,258 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.387096774193548) internal successors, (229), 30 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-23 18:22:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:22:13,267 INFO L225 Difference]: With dead ends: 5304 [2024-11-23 18:22:13,267 INFO L226 Difference]: Without dead ends: 3418 [2024-11-23 18:22:13,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=666, Invalid=2414, Unknown=0, NotChecked=0, Total=3080 [2024-11-23 18:22:13,272 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 918 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:22:13,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 719 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 18:22:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2024-11-23 18:22:13,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3368. [2024-11-23 18:22:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 3367 states have (on average 1.2087912087912087) internal successors, (4070), 3367 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4070 transitions. [2024-11-23 18:22:13,499 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4070 transitions. Word has length 98 [2024-11-23 18:22:13,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:22:13,500 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 4070 transitions. [2024-11-23 18:22:13,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.387096774193548) internal successors, (229), 30 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4070 transitions. [2024-11-23 18:22:13,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 18:22:13,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:22:13,502 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:22:13,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 18:22:13,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:22:13,707 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:22:13,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:22:13,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1864288034, now seen corresponding path program 1 times [2024-11-23 18:22:13,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:22:13,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556132633] [2024-11-23 18:22:13,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:13,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:22:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 30 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:14,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:22:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556132633] [2024-11-23 18:22:14,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556132633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:22:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654011269] [2024-11-23 18:22:14,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:14,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:22:14,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:22:14,579 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:22:14,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 18:22:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:14,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 18:22:14,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:22:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 24 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:15,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:22:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 22 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:17,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654011269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:22:17,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:22:17,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2024-11-23 18:22:17,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524421902] [2024-11-23 18:22:17,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:22:17,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 18:22:17,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:22:17,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 18:22:17,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2024-11-23 18:22:17,443 INFO L87 Difference]: Start difference. First operand 3368 states and 4070 transitions. Second operand has 32 states, 32 states have (on average 8.53125) internal successors, (273), 31 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:21,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:22:21,224 INFO L93 Difference]: Finished difference Result 6122 states and 7436 transitions. [2024-11-23 18:22:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-23 18:22:21,224 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.53125) internal successors, (273), 31 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2024-11-23 18:22:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:22:21,231 INFO L225 Difference]: With dead ends: 6122 [2024-11-23 18:22:21,231 INFO L226 Difference]: Without dead ends: 3616 [2024-11-23 18:22:21,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1213, Invalid=4639, Unknown=0, NotChecked=0, Total=5852 [2024-11-23 18:22:21,235 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 1059 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:22:21,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 965 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:22:21,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2024-11-23 18:22:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3368. [2024-11-23 18:22:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 3367 states have (on average 1.1888921888921888) internal successors, (4003), 3367 states have internal predecessors, (4003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4003 transitions. [2024-11-23 18:22:21,496 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4003 transitions. Word has length 98 [2024-11-23 18:22:21,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:22:21,496 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 4003 transitions. [2024-11-23 18:22:21,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.53125) internal successors, (273), 31 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:22:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4003 transitions. [2024-11-23 18:22:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-23 18:22:21,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:22:21,498 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:22:21,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 18:22:21,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-23 18:22:21,702 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:22:21,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:22:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1708375633, now seen corresponding path program 1 times [2024-11-23 18:22:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:22:21,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120368165] [2024-11-23 18:22:21,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:22:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:23,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:22:23,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120368165] [2024-11-23 18:22:23,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120368165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:22:23,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960610825] [2024-11-23 18:22:23,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:22:23,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:22:23,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:22:23,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:22:23,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 18:22:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:22:23,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-23 18:22:23,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:22:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:26,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:22:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:22:33,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960610825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:22:33,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:22:33,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 22] total 64 [2024-11-23 18:22:33,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676838680] [2024-11-23 18:22:33,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:22:33,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-23 18:22:33,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:22:33,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-23 18:22:33,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=3688, Unknown=0, NotChecked=0, Total=4032 [2024-11-23 18:22:33,620 INFO L87 Difference]: Start difference. First operand 3368 states and 4003 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:24:08,585 INFO L93 Difference]: Finished difference Result 9361 states and 11165 transitions. [2024-11-23 18:24:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2024-11-23 18:24:08,585 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-23 18:24:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:24:08,597 INFO L225 Difference]: With dead ends: 9361 [2024-11-23 18:24:08,597 INFO L226 Difference]: Without dead ends: 7929 [2024-11-23 18:24:08,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34070 ImplicationChecksByTransitivity, 91.6s TimeCoverageRelationStatistics Valid=13037, Invalid=82135, Unknown=0, NotChecked=0, Total=95172 [2024-11-23 18:24:08,609 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 6887 mSDsluCounter, 5051 mSDsCounter, 0 mSdLazyCounter, 4816 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6887 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 5157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 4816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:24:08,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6887 Valid, 5267 Invalid, 5157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 4816 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-23 18:24:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7929 states. [2024-11-23 18:24:09,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7929 to 6346. [2024-11-23 18:24:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6346 states, 6345 states have (on average 1.1933806146572103) internal successors, (7572), 6345 states have internal predecessors, (7572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6346 states to 6346 states and 7572 transitions. [2024-11-23 18:24:09,267 INFO L78 Accepts]: Start accepts. Automaton has 6346 states and 7572 transitions. Word has length 99 [2024-11-23 18:24:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:24:09,267 INFO L471 AbstractCegarLoop]: Abstraction has 6346 states and 7572 transitions. [2024-11-23 18:24:09,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:24:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 6346 states and 7572 transitions. [2024-11-23 18:24:09,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-23 18:24:09,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:24:09,270 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:24:09,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 18:24:09,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-23 18:24:09,474 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:24:09,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:24:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1951285652, now seen corresponding path program 1 times [2024-11-23 18:24:09,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:24:09,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687066629] [2024-11-23 18:24:09,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:09,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:24:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:11,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:24:11,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687066629] [2024-11-23 18:24:11,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687066629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:24:11,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581211967] [2024-11-23 18:24:11,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:24:11,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:24:11,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:24:11,393 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:24:11,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 18:24:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:24:11,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-23 18:24:11,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:24:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:14,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:24:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:24:20,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581211967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:24:20,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:24:20,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 22] total 69 [2024-11-23 18:24:20,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334717527] [2024-11-23 18:24:20,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:24:20,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-23 18:24:20,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:24:20,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-23 18:24:20,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=4289, Unknown=0, NotChecked=0, Total=4692 [2024-11-23 18:24:20,178 INFO L87 Difference]: Start difference. First operand 6346 states and 7572 transitions. Second operand has 69 states, 69 states have (on average 3.8115942028985508) internal successors, (263), 69 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:26:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:26:16,235 INFO L93 Difference]: Finished difference Result 21925 states and 26359 transitions. [2024-11-23 18:26:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2024-11-23 18:26:16,236 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.8115942028985508) internal successors, (263), 69 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-23 18:26:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:26:16,252 INFO L225 Difference]: With dead ends: 21925 [2024-11-23 18:26:16,252 INFO L226 Difference]: Without dead ends: 17849 [2024-11-23 18:26:16,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 154 SyntacticMatches, 4 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56859 ImplicationChecksByTransitivity, 110.8s TimeCoverageRelationStatistics Valid=16428, Invalid=131412, Unknown=0, NotChecked=0, Total=147840 [2024-11-23 18:26:16,265 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 5267 mSDsluCounter, 7549 mSDsCounter, 0 mSdLazyCounter, 6508 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5267 SdHoareTripleChecker+Valid, 7845 SdHoareTripleChecker+Invalid, 6704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 6508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:26:16,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5267 Valid, 7845 Invalid, 6704 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [196 Valid, 6508 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-23 18:26:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17849 states. [2024-11-23 18:26:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17849 to 8961. [2024-11-23 18:26:17,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8961 states, 8960 states have (on average 1.1957589285714285) internal successors, (10714), 8960 states have internal predecessors, (10714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:26:17,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8961 states to 8961 states and 10714 transitions. [2024-11-23 18:26:17,312 INFO L78 Accepts]: Start accepts. Automaton has 8961 states and 10714 transitions. Word has length 100 [2024-11-23 18:26:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:26:17,312 INFO L471 AbstractCegarLoop]: Abstraction has 8961 states and 10714 transitions. [2024-11-23 18:26:17,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.8115942028985508) internal successors, (263), 69 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:26:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8961 states and 10714 transitions. [2024-11-23 18:26:17,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 18:26:17,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:26:17,315 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:26:17,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 18:26:17,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:26:17,516 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:26:17,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:26:17,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1286582091, now seen corresponding path program 1 times [2024-11-23 18:26:17,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:26:17,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175818695] [2024-11-23 18:26:17,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:26:17,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:26:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:26:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:26:18,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:26:18,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175818695] [2024-11-23 18:26:18,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175818695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:26:18,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815810895] [2024-11-23 18:26:18,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:26:18,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:26:18,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:26:18,952 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:26:18,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 18:26:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:26:19,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-23 18:26:19,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:26:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:26:21,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:26:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:26:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815810895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:26:25,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:26:25,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 55 [2024-11-23 18:26:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124657634] [2024-11-23 18:26:25,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:26:25,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-23 18:26:25,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:26:25,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-23 18:26:25,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2772, Unknown=0, NotChecked=0, Total=2970 [2024-11-23 18:26:25,817 INFO L87 Difference]: Start difference. First operand 8961 states and 10714 transitions. Second operand has 55 states, 55 states have (on average 5.072727272727272) internal successors, (279), 55 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:27:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:27:04,091 INFO L93 Difference]: Finished difference Result 19089 states and 22943 transitions. [2024-11-23 18:27:04,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2024-11-23 18:27:04,092 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.072727272727272) internal successors, (279), 55 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-23 18:27:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:27:04,105 INFO L225 Difference]: With dead ends: 19089 [2024-11-23 18:27:04,106 INFO L226 Difference]: Without dead ends: 13935 [2024-11-23 18:27:04,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14357 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=6145, Invalid=39865, Unknown=0, NotChecked=0, Total=46010 [2024-11-23 18:27:04,111 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 5656 mSDsluCounter, 4700 mSDsCounter, 0 mSdLazyCounter, 3727 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 4905 SdHoareTripleChecker+Invalid, 3903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:27:04,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5656 Valid, 4905 Invalid, 3903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 3727 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 18:27:04,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13935 states. [2024-11-23 18:27:05,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13935 to 8928. [2024-11-23 18:27:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8928 states, 8927 states have (on average 1.1831522347933237) internal successors, (10562), 8927 states have internal predecessors, (10562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:27:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8928 states to 8928 states and 10562 transitions. [2024-11-23 18:27:05,054 INFO L78 Accepts]: Start accepts. Automaton has 8928 states and 10562 transitions. Word has length 101 [2024-11-23 18:27:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:27:05,054 INFO L471 AbstractCegarLoop]: Abstraction has 8928 states and 10562 transitions. [2024-11-23 18:27:05,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.072727272727272) internal successors, (279), 55 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:27:05,055 INFO L276 IsEmpty]: Start isEmpty. Operand 8928 states and 10562 transitions. [2024-11-23 18:27:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-23 18:27:05,057 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:27:05,057 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:27:05,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 18:27:05,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:27:05,260 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:27:05,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:27:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1823579634, now seen corresponding path program 1 times [2024-11-23 18:27:05,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:27:05,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269748349] [2024-11-23 18:27:05,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:27:05,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:27:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:27:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:27:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:27:05,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269748349] [2024-11-23 18:27:05,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269748349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:27:05,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368742475] [2024-11-23 18:27:05,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:27:05,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:27:05,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:27:05,860 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:27:05,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 18:27:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:27:06,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 18:27:06,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:27:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:27:07,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:27:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 27 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:27:09,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368742475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:27:09,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:27:09,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 16] total 41 [2024-11-23 18:27:09,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556531701] [2024-11-23 18:27:09,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:27:09,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-23 18:27:09,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:27:09,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-23 18:27:09,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1473, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 18:27:09,777 INFO L87 Difference]: Start difference. First operand 8928 states and 10562 transitions. Second operand has 41 states, 41 states have (on average 6.682926829268292) internal successors, (274), 41 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:27:16,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:27:16,801 INFO L93 Difference]: Finished difference Result 28603 states and 34228 transitions. [2024-11-23 18:27:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-23 18:27:16,801 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.682926829268292) internal successors, (274), 41 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-23 18:27:16,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:27:16,816 INFO L225 Difference]: With dead ends: 28603 [2024-11-23 18:27:16,816 INFO L226 Difference]: Without dead ends: 20879 [2024-11-23 18:27:16,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1352, Invalid=5958, Unknown=0, NotChecked=0, Total=7310 [2024-11-23 18:27:16,822 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 1666 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:27:16,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 2058 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 18:27:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20879 states. [2024-11-23 18:27:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20879 to 10007. [2024-11-23 18:27:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10007 states, 10006 states have (on average 1.1861882870277833) internal successors, (11869), 10006 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:27:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 11869 transitions. [2024-11-23 18:27:18,279 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 11869 transitions. Word has length 102 [2024-11-23 18:27:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:27:18,279 INFO L471 AbstractCegarLoop]: Abstraction has 10007 states and 11869 transitions. [2024-11-23 18:27:18,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.682926829268292) internal successors, (274), 41 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:27:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 11869 transitions. [2024-11-23 18:27:18,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-23 18:27:18,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:27:18,281 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:27:18,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-23 18:27:18,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-23 18:27:18,482 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:27:18,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:27:18,482 INFO L85 PathProgramCache]: Analyzing trace with hash -628885109, now seen corresponding path program 1 times [2024-11-23 18:27:18,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:27:18,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675842368] [2024-11-23 18:27:18,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:27:18,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:27:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:27:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:27:19,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:27:19,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675842368] [2024-11-23 18:27:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675842368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:27:19,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793063356] [2024-11-23 18:27:19,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:27:19,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:27:19,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:27:19,974 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:27:19,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 18:27:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:27:20,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-23 18:27:20,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:27:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 23 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:27:24,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:27:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:27:34,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793063356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:27:34,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:27:34,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30, 31] total 79 [2024-11-23 18:27:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881118904] [2024-11-23 18:27:34,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:27:34,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-23 18:27:34,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:27:34,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-23 18:27:34,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=5552, Unknown=0, NotChecked=0, Total=6162 [2024-11-23 18:27:34,232 INFO L87 Difference]: Start difference. First operand 10007 states and 11869 transitions. Second operand has 79 states, 79 states have (on average 3.518987341772152) internal successors, (278), 79 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:30:53,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:53,212 INFO L93 Difference]: Finished difference Result 41723 states and 49561 transitions. [2024-11-23 18:30:53,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 388 states. [2024-11-23 18:30:53,213 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.518987341772152) internal successors, (278), 79 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-23 18:30:53,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:53,241 INFO L225 Difference]: With dead ends: 41723 [2024-11-23 18:30:53,241 INFO L226 Difference]: Without dead ends: 38232 [2024-11-23 18:30:53,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 463 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97519 ImplicationChecksByTransitivity, 191.0s TimeCoverageRelationStatistics Valid=39227, Invalid=176533, Unknown=0, NotChecked=0, Total=215760 [2024-11-23 18:30:53,254 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 6580 mSDsluCounter, 6744 mSDsCounter, 0 mSdLazyCounter, 5968 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6580 SdHoareTripleChecker+Valid, 6948 SdHoareTripleChecker+Invalid, 6323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 5968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:53,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6580 Valid, 6948 Invalid, 6323 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [355 Valid, 5968 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-23 18:30:53,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38232 states. [2024-11-23 18:30:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38232 to 12256. [2024-11-23 18:30:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12256 states, 12255 states have (on average 1.184985720114239) internal successors, (14522), 12255 states have internal predecessors, (14522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:30:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12256 states to 12256 states and 14522 transitions. [2024-11-23 18:30:55,503 INFO L78 Accepts]: Start accepts. Automaton has 12256 states and 14522 transitions. Word has length 103 [2024-11-23 18:30:55,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:55,503 INFO L471 AbstractCegarLoop]: Abstraction has 12256 states and 14522 transitions. [2024-11-23 18:30:55,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.518987341772152) internal successors, (278), 79 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:30:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 12256 states and 14522 transitions. [2024-11-23 18:30:55,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:30:55,507 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:55,507 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:30:55,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 18:30:55,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-23 18:30:55,708 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:55,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1388476591, now seen corresponding path program 1 times [2024-11-23 18:30:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:55,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095673363] [2024-11-23 18:30:55,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:55,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 140 proven. 53 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 18:30:58,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095673363] [2024-11-23 18:30:58,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095673363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150948843] [2024-11-23 18:30:58,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:58,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:58,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:58,086 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:58,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 18:30:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:58,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-23 18:30:58,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:31:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 43 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:31:02,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:31:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 50 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:31:13,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150948843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:31:13,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:31:13,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 30, 30] total 82 [2024-11-23 18:31:13,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695205806] [2024-11-23 18:31:13,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:31:13,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-23 18:31:13,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:31:13,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-23 18:31:13,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=5878, Unknown=1, NotChecked=0, Total=6642 [2024-11-23 18:31:13,186 INFO L87 Difference]: Start difference. First operand 12256 states and 14522 transitions. Second operand has 82 states, 82 states have (on average 4.475609756097561) internal successors, (367), 82 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:31:56,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:31:56,657 INFO L93 Difference]: Finished difference Result 28788 states and 34419 transitions. [2024-11-23 18:31:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-11-23 18:31:56,657 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 4.475609756097561) internal successors, (367), 82 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2024-11-23 18:31:56,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:31:56,675 INFO L225 Difference]: With dead ends: 28788 [2024-11-23 18:31:56,675 INFO L226 Difference]: Without dead ends: 23865 [2024-11-23 18:31:56,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16327 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=8770, Invalid=46689, Unknown=1, NotChecked=0, Total=55460 [2024-11-23 18:31:56,683 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 4381 mSDsluCounter, 4705 mSDsCounter, 0 mSdLazyCounter, 4392 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4381 SdHoareTripleChecker+Valid, 4872 SdHoareTripleChecker+Invalid, 4609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 4392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:31:56,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4381 Valid, 4872 Invalid, 4609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 4392 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-23 18:31:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23865 states. [2024-11-23 18:31:59,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23865 to 20598. [2024-11-23 18:31:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20598 states, 20597 states have (on average 1.1895907170947226) internal successors, (24502), 20597 states have internal predecessors, (24502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:31:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20598 states to 20598 states and 24502 transitions. [2024-11-23 18:31:59,910 INFO L78 Accepts]: Start accepts. Automaton has 20598 states and 24502 transitions. Word has length 139 [2024-11-23 18:31:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:31:59,910 INFO L471 AbstractCegarLoop]: Abstraction has 20598 states and 24502 transitions. [2024-11-23 18:31:59,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 4.475609756097561) internal successors, (367), 82 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:31:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 20598 states and 24502 transitions. [2024-11-23 18:31:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-23 18:31:59,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:31:59,915 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:31:59,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 18:32:00,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-23 18:32:00,115 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:32:00,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:32:00,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1486302159, now seen corresponding path program 1 times [2024-11-23 18:32:00,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:32:00,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965043724] [2024-11-23 18:32:00,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:00,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:32:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 138 proven. 62 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-23 18:32:01,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:32:01,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965043724] [2024-11-23 18:32:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965043724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:32:01,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707366484] [2024-11-23 18:32:01,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:32:01,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:32:01,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:32:01,519 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:32:01,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 18:32:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:32:01,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-23 18:32:01,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:32:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 64 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:32:04,181 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:32:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 60 proven. 173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:32:11,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707366484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:32:11,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:32:11,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 20] total 61 [2024-11-23 18:32:11,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107444491] [2024-11-23 18:32:11,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:32:11,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-23 18:32:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:32:11,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-23 18:32:11,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=3399, Unknown=0, NotChecked=0, Total=3660 [2024-11-23 18:32:11,032 INFO L87 Difference]: Start difference. First operand 20598 states and 24502 transitions. Second operand has 61 states, 61 states have (on average 5.885245901639344) internal successors, (359), 61 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:33:13,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:33:13,025 INFO L93 Difference]: Finished difference Result 68868 states and 82371 transitions. [2024-11-23 18:33:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2024-11-23 18:33:13,025 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.885245901639344) internal successors, (359), 61 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2024-11-23 18:33:13,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:33:13,066 INFO L225 Difference]: With dead ends: 68868 [2024-11-23 18:33:13,066 INFO L226 Difference]: Without dead ends: 50052 [2024-11-23 18:33:13,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27302 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=10564, Invalid=73246, Unknown=0, NotChecked=0, Total=83810 [2024-11-23 18:33:13,083 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 3452 mSDsluCounter, 7396 mSDsCounter, 0 mSdLazyCounter, 5196 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3452 SdHoareTripleChecker+Valid, 7624 SdHoareTripleChecker+Invalid, 5387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 5196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:33:13,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3452 Valid, 7624 Invalid, 5387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 5196 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-23 18:33:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50052 states. [2024-11-23 18:33:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50052 to 39442. [2024-11-23 18:33:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39442 states, 39441 states have (on average 1.1884840648056592) internal successors, (46875), 39441 states have internal predecessors, (46875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:33:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39442 states to 39442 states and 46875 transitions. [2024-11-23 18:33:19,542 INFO L78 Accepts]: Start accepts. Automaton has 39442 states and 46875 transitions. Word has length 139 [2024-11-23 18:33:19,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:33:19,543 INFO L471 AbstractCegarLoop]: Abstraction has 39442 states and 46875 transitions. [2024-11-23 18:33:19,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.885245901639344) internal successors, (359), 61 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:33:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 39442 states and 46875 transitions. [2024-11-23 18:33:19,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 18:33:19,547 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:33:19,547 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:33:19,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-23 18:33:19,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:33:19,748 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:33:19,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:33:19,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1303888750, now seen corresponding path program 1 times [2024-11-23 18:33:19,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:33:19,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690568869] [2024-11-23 18:33:19,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:19,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:33:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 38 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:33:21,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:33:21,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690568869] [2024-11-23 18:33:21,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690568869] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:33:21,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197224446] [2024-11-23 18:33:21,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:33:21,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:33:21,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:33:21,130 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:33:21,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 18:33:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:33:21,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-23 18:33:21,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:33:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 29 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:33:24,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:33:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 27 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:33:30,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197224446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:33:30,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:33:30,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 20] total 60 [2024-11-23 18:33:30,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128682646] [2024-11-23 18:33:30,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:33:30,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-23 18:33:30,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:33:30,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-23 18:33:30,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=3207, Unknown=0, NotChecked=0, Total=3540 [2024-11-23 18:33:30,605 INFO L87 Difference]: Start difference. First operand 39442 states and 46875 transitions. Second operand has 60 states, 60 states have (on average 6.75) internal successors, (405), 60 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:34:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:34:33,922 INFO L93 Difference]: Finished difference Result 97930 states and 116601 transitions. [2024-11-23 18:34:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2024-11-23 18:34:33,923 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.75) internal successors, (405), 60 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-11-23 18:34:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:34:33,978 INFO L225 Difference]: With dead ends: 97930 [2024-11-23 18:34:33,979 INFO L226 Difference]: Without dead ends: 62817 [2024-11-23 18:34:33,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32041 ImplicationChecksByTransitivity, 50.7s TimeCoverageRelationStatistics Valid=12415, Invalid=77885, Unknown=0, NotChecked=0, Total=90300 [2024-11-23 18:34:33,997 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 3346 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 4404 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 4595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 4404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:34:33,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3346 Valid, 4617 Invalid, 4595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 4404 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-23 18:34:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62817 states. [2024-11-23 18:34:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62817 to 45465. [2024-11-23 18:34:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45465 states, 45464 states have (on average 1.1818141826500088) internal successors, (53730), 45464 states have internal predecessors, (53730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:34:42,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45465 states to 45465 states and 53730 transitions. [2024-11-23 18:34:42,680 INFO L78 Accepts]: Start accepts. Automaton has 45465 states and 53730 transitions. Word has length 140 [2024-11-23 18:34:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:34:42,680 INFO L471 AbstractCegarLoop]: Abstraction has 45465 states and 53730 transitions. [2024-11-23 18:34:42,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.75) internal successors, (405), 60 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:34:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 45465 states and 53730 transitions. [2024-11-23 18:34:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 18:34:42,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:34:42,683 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:34:42,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-23 18:34:42,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:34:42,884 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:34:42,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:34:42,884 INFO L85 PathProgramCache]: Analyzing trace with hash 305991153, now seen corresponding path program 1 times [2024-11-23 18:34:42,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:34:42,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546632095] [2024-11-23 18:34:42,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:42,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:34:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 20 proven. 193 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 18:34:43,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:34:43,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546632095] [2024-11-23 18:34:43,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546632095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:34:43,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397888594] [2024-11-23 18:34:43,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:34:43,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:34:43,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:34:43,100 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:34:43,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb3eca0b-0058-4573-87ac-f528669970f6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 18:34:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:34:43,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 18:34:43,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:34:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 20 proven. 193 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-23 18:34:43,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:34:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 185 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-23 18:34:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397888594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:34:44,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:34:44,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 17 [2024-11-23 18:34:44,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416388] [2024-11-23 18:34:44,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:34:44,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 18:34:44,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:34:44,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 18:34:44,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-11-23 18:34:44,273 INFO L87 Difference]: Start difference. First operand 45465 states and 53730 transitions. Second operand has 17 states, 17 states have (on average 15.764705882352942) internal successors, (268), 17 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)