./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.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_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/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_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/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_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/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 12e64e5880a6492945a65c8a75846fcd1e471751df63fa7462470a498bbbc9fb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:34:33,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:34:33,600 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:34:33,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:34:33,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:34:33,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:34:33,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:34:33,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:34:33,644 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:34:33,644 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:34:33,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:34:33,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:34:33,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:34:33,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:34:33,644 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:34:33,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:34:33,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:34:33,646 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:34:33,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:34:33,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:34:33,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:34:33,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:34:33,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:34:33,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:34:33,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:34:33,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:34:33,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:34:33,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:34:33,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:34:33,649 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:34:33,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:34:33,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:34:33,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:34:33,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:34:33,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:34:33,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:34:33,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:34:33,650 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_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/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 -> 12e64e5880a6492945a65c8a75846fcd1e471751df63fa7462470a498bbbc9fb [2024-11-24 00:34:33,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:34:33,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:34:33,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:34:33,945 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:34:33,945 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:34:33,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-24 00:34:36,828 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/data/aacfa5514/6b548533c936483a966d2320df58b044/FLAG5bca13490 [2024-11-24 00:34:37,422 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:34:37,422 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-24 00:34:37,456 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/data/aacfa5514/6b548533c936483a966d2320df58b044/FLAG5bca13490 [2024-11-24 00:34:37,889 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/data/aacfa5514/6b548533c936483a966d2320df58b044 [2024-11-24 00:34:37,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:34:37,893 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:34:37,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:34:37,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:34:37,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:34:37,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:34:37" (1/1) ... [2024-11-24 00:34:37,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbd4132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:37, skipping insertion in model container [2024-11-24 00:34:37,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:34:37" (1/1) ... [2024-11-24 00:34:38,017 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:34:38,323 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_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[6487,6500] [2024-11-24 00:34:38,391 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_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[13548,13561] [2024-11-24 00:34:39,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:34:39,209 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:34:39,253 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_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[6487,6500] [2024-11-24 00:34:39,276 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_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[13548,13561] [2024-11-24 00:34:39,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:34:39,774 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:34:39,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39 WrapperNode [2024-11-24 00:34:39,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:34:39,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:34:39,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:34:39,777 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:34:39,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:39,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:40,299 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4982 [2024-11-24 00:34:40,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:34:40,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:34:40,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:34:40,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:34:40,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:40,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:40,473 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:40,724 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 00:34:40,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:40,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:40,940 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:40,971 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:41,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:41,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:41,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:41,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:34:41,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:34:41,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:34:41,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:34:41,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (1/1) ... [2024-11-24 00:34:41,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:34:41,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:41,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:34:41,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:34:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:34:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:34:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:34:41,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:34:41,508 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:34:41,510 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:34:47,684 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-24 00:34:47,685 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:34:47,730 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:34:47,730 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:34:47,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:34:47 BoogieIcfgContainer [2024-11-24 00:34:47,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:34:47,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:34:47,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:34:47,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:34:47,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:34:37" (1/3) ... [2024-11-24 00:34:47,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1944f402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:34:47, skipping insertion in model container [2024-11-24 00:34:47,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:34:39" (2/3) ... [2024-11-24 00:34:47,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1944f402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:34:47, skipping insertion in model container [2024-11-24 00:34:47,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:34:47" (3/3) ... [2024-11-24 00:34:47,748 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-24 00:34:47,763 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:34:47,768 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c that has 1 procedures, 874 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-24 00:34:47,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:34:47,895 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;@39add981, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:34:47,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 00:34:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 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) [2024-11-24 00:34:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 00:34:47,913 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:47,913 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] [2024-11-24 00:34:47,914 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:47,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2024-11-24 00:34:47,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:47,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916406303] [2024-11-24 00:34:47,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:47,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:48,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:48,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916406303] [2024-11-24 00:34:48,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916406303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:48,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:48,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:34:48,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830903032] [2024-11-24 00:34:48,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:48,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:34:48,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:48,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:34:48,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:34:48,225 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-11-24 00:34:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:48,353 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2024-11-24 00:34:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:34:48,355 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2024-11-24 00:34:48,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:48,369 INFO L225 Difference]: With dead ends: 1724 [2024-11-24 00:34:48,369 INFO L226 Difference]: Without dead ends: 808 [2024-11-24 00:34:48,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:34:48,377 INFO L435 NwaCegarLoop]: 1591 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, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:48,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:48,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-24 00:34:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-24 00:34:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 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) [2024-11-24 00:34:48,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2024-11-24 00:34:48,491 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2024-11-24 00:34:48,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:48,495 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2024-11-24 00:34:48,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2024-11-24 00:34:48,496 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2024-11-24 00:34:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 00:34:48,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:48,499 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] [2024-11-24 00:34:48,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:34:48,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:48,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:48,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2024-11-24 00:34:48,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:48,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490595908] [2024-11-24 00:34:48,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:48,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:48,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:48,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490595908] [2024-11-24 00:34:48,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490595908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:48,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:48,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:34:48,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088842272] [2024-11-24 00:34:48,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:48,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:48,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:48,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:48,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:34:48,794 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-24 00:34:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:48,962 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2024-11-24 00:34:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:34:48,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-11-24 00:34:48,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:48,970 INFO L225 Difference]: With dead ends: 844 [2024-11-24 00:34:48,970 INFO L226 Difference]: Without dead ends: 808 [2024-11-24 00:34:48,971 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 [2024-11-24 00:34:48,972 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 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 [2024-11-24 00:34:48,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-24 00:34:49,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2024-11-24 00:34:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 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) [2024-11-24 00:34:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2024-11-24 00:34:49,023 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2024-11-24 00:34:49,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:49,023 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2024-11-24 00:34:49,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-24 00:34:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2024-11-24 00:34:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-24 00:34:49,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:49,025 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] [2024-11-24 00:34:49,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:34:49,026 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:49,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2024-11-24 00:34:49,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:49,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376254172] [2024-11-24 00:34:49,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:49,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:49,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376254172] [2024-11-24 00:34:49,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376254172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:49,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:49,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:34:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507725273] [2024-11-24 00:34:49,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:49,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:49,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:49,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:49,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:34:49,346 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-24 00:34:49,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:49,512 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2024-11-24 00:34:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:34:49,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2024-11-24 00:34:49,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:49,520 INFO L225 Difference]: With dead ends: 1000 [2024-11-24 00:34:49,520 INFO L226 Difference]: Without dead ends: 968 [2024-11-24 00:34:49,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:34:49,522 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:49,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-24 00:34:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2024-11-24 00:34:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 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) [2024-11-24 00:34:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2024-11-24 00:34:49,564 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2024-11-24 00:34:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:49,564 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2024-11-24 00:34:49,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-24 00:34:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2024-11-24 00:34:49,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-24 00:34:49,565 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:49,565 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] [2024-11-24 00:34:49,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:34:49,566 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:49,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:49,566 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2024-11-24 00:34:49,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:49,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312597609] [2024-11-24 00:34:49,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:49,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:49,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:49,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312597609] [2024-11-24 00:34:49,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312597609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:49,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:49,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:34:49,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474745276] [2024-11-24 00:34:49,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:49,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:49,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:49,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:49,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:49,734 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2024-11-24 00:34:49,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:49,785 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2024-11-24 00:34:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:49,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 [2024-11-24 00:34:49,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:49,790 INFO L225 Difference]: With dead ends: 951 [2024-11-24 00:34:49,790 INFO L226 Difference]: Without dead ends: 889 [2024-11-24 00:34:49,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:49,793 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:49,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:49,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-24 00:34:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2024-11-24 00:34:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 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) [2024-11-24 00:34:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2024-11-24 00:34:49,832 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2024-11-24 00:34:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:49,833 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2024-11-24 00:34:49,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2024-11-24 00:34:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2024-11-24 00:34:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-24 00:34:49,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:49,837 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] [2024-11-24 00:34:49,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:34:49,837 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:49,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:49,838 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2024-11-24 00:34:49,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:49,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533405711] [2024-11-24 00:34:49,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:49,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:50,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:50,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533405711] [2024-11-24 00:34:50,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533405711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:50,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:50,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:34:50,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006615966] [2024-11-24 00:34:50,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:50,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:50,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:50,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:50,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:34:50,142 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2024-11-24 00:34:50,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:50,255 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2024-11-24 00:34:50,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:34:50,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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 [2024-11-24 00:34:50,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:50,261 INFO L225 Difference]: With dead ends: 996 [2024-11-24 00:34:50,261 INFO L226 Difference]: Without dead ends: 887 [2024-11-24 00:34:50,262 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 [2024-11-24 00:34:50,264 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:50,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-24 00:34:50,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2024-11-24 00:34:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 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) [2024-11-24 00:34:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2024-11-24 00:34:50,294 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2024-11-24 00:34:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:50,296 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2024-11-24 00:34:50,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2024-11-24 00:34:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2024-11-24 00:34:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:34:50,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:50,298 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] [2024-11-24 00:34:50,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:34:50,301 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:50,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2024-11-24 00:34:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:50,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365381079] [2024-11-24 00:34:50,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:50,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:50,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:50,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365381079] [2024-11-24 00:34:50,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365381079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:50,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:50,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:34:50,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308047087] [2024-11-24 00:34:50,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:50,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:34:50,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:50,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:34:50,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:34:50,673 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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) [2024-11-24 00:34:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:50,858 INFO L93 Difference]: Finished difference Result 893 states and 1635 transitions. [2024-11-24 00:34:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:34:50,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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 [2024-11-24 00:34:50,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:50,871 INFO L225 Difference]: With dead ends: 893 [2024-11-24 00:34:50,875 INFO L226 Difference]: Without dead ends: 891 [2024-11-24 00:34:50,876 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 [2024-11-24 00:34:50,877 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 9017 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10522 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:50,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10522 Invalid, 51 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-24 00:34:50,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 891. [2024-11-24 00:34:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 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) [2024-11-24 00:34:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2024-11-24 00:34:50,935 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2024-11-24 00:34:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:50,941 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2024-11-24 00:34:50,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 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) [2024-11-24 00:34:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2024-11-24 00:34:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 00:34:50,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:50,943 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, 1] [2024-11-24 00:34:50,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:34:50,943 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:50,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2024-11-24 00:34:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922039659] [2024-11-24 00:34:50,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:50,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:51,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922039659] [2024-11-24 00:34:51,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922039659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:51,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:51,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:34:51,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388972156] [2024-11-24 00:34:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:51,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:51,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:51,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:51,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:51,072 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-24 00:34:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:51,147 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2024-11-24 00:34:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-24 00:34:51,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:51,152 INFO L225 Difference]: With dead ends: 1105 [2024-11-24 00:34:51,152 INFO L226 Difference]: Without dead ends: 990 [2024-11-24 00:34:51,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:51,155 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 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 [2024-11-24 00:34:51,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-24 00:34:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2024-11-24 00:34:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 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) [2024-11-24 00:34:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2024-11-24 00:34:51,193 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2024-11-24 00:34:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:51,193 INFO L471 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2024-11-24 00:34:51,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-24 00:34:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2024-11-24 00:34:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 00:34:51,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:51,196 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, 1] [2024-11-24 00:34:51,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:34:51,196 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:51,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2024-11-24 00:34:51,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:51,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365384470] [2024-11-24 00:34:51,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:51,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:51,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:51,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365384470] [2024-11-24 00:34:51,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365384470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:51,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:51,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:34:51,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647060233] [2024-11-24 00:34:51,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:51,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:51,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:51,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:51,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:51,283 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-24 00:34:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:51,332 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2024-11-24 00:34:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:51,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-24 00:34:51,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:51,339 INFO L225 Difference]: With dead ends: 1380 [2024-11-24 00:34:51,339 INFO L226 Difference]: Without dead ends: 1168 [2024-11-24 00:34:51,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:51,340 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 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 [2024-11-24 00:34:51,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-24 00:34:51,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2024-11-24 00:34:51,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 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) [2024-11-24 00:34:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2024-11-24 00:34:51,388 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2024-11-24 00:34:51,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:51,389 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2024-11-24 00:34:51,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-11-24 00:34:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2024-11-24 00:34:51,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-24 00:34:51,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:51,390 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, 1, 1, 1] [2024-11-24 00:34:51,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:34:51,391 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:51,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:51,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2024-11-24 00:34:51,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:51,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054800832] [2024-11-24 00:34:51,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:51,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054800832] [2024-11-24 00:34:51,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054800832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:51,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:51,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:34:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578767747] [2024-11-24 00:34:51,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:51,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:51,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:51,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:51,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:51,479 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-24 00:34:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:51,535 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2024-11-24 00:34:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:51,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2024-11-24 00:34:51,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:51,544 INFO L225 Difference]: With dead ends: 1589 [2024-11-24 00:34:51,544 INFO L226 Difference]: Without dead ends: 1354 [2024-11-24 00:34:51,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:51,546 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 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 [2024-11-24 00:34:51,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2024-11-24 00:34:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2024-11-24 00:34:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 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) [2024-11-24 00:34:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2024-11-24 00:34:51,602 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2024-11-24 00:34:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:51,602 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2024-11-24 00:34:51,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-24 00:34:51,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2024-11-24 00:34:51,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 00:34:51,604 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:51,604 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] [2024-11-24 00:34:51,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:34:51,605 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:51,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2024-11-24 00:34:51,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:51,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998994924] [2024-11-24 00:34:51,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:51,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:34:51,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:51,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998994924] [2024-11-24 00:34:51,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998994924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:51,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:51,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:34:51,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751077439] [2024-11-24 00:34:51,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:51,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:51,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:51,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:51,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:34:51,775 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-24 00:34:51,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:51,930 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2024-11-24 00:34:51,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:34:51,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 [2024-11-24 00:34:51,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:51,941 INFO L225 Difference]: With dead ends: 3208 [2024-11-24 00:34:51,941 INFO L226 Difference]: Without dead ends: 2634 [2024-11-24 00:34:51,945 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 [2024-11-24 00:34:51,946 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 3057 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:51,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2024-11-24 00:34:52,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2024-11-24 00:34:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 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) [2024-11-24 00:34:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2024-11-24 00:34:52,026 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2024-11-24 00:34:52,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:52,027 INFO L471 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2024-11-24 00:34:52,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-11-24 00:34:52,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2024-11-24 00:34:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 00:34:52,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:52,028 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] [2024-11-24 00:34:52,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:34:52,029 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:52,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:52,029 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2024-11-24 00:34:52,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:52,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110333315] [2024-11-24 00:34:52,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:52,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:34:52,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110333315] [2024-11-24 00:34:52,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110333315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:52,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:52,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:34:52,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290332613] [2024-11-24 00:34:52,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:52,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:52,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:52,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:52,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:34:52,203 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-24 00:34:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:52,365 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2024-11-24 00:34:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:34:52,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 [2024-11-24 00:34:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:52,377 INFO L225 Difference]: With dead ends: 3780 [2024-11-24 00:34:52,378 INFO L226 Difference]: Without dead ends: 3206 [2024-11-24 00:34:52,380 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 [2024-11-24 00:34:52,380 INFO L435 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:52,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:34:52,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2024-11-24 00:34:52,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2024-11-24 00:34:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 states have internal predecessors, (4224), 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) [2024-11-24 00:34:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2024-11-24 00:34:52,523 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2024-11-24 00:34:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:52,523 INFO L471 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2024-11-24 00:34:52,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2024-11-24 00:34:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2024-11-24 00:34:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:34:52,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:52,524 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, 1] [2024-11-24 00:34:52,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:34:52,524 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:52,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:52,525 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2024-11-24 00:34:52,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:52,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524879477] [2024-11-24 00:34:52,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:52,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:52,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524879477] [2024-11-24 00:34:52,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524879477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:52,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:52,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:34:52,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864226789] [2024-11-24 00:34:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:52,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:52,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:52,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:52,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:52,649 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 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) [2024-11-24 00:34:52,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:52,714 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2024-11-24 00:34:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:52,715 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 [2024-11-24 00:34:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:52,723 INFO L225 Difference]: With dead ends: 4260 [2024-11-24 00:34:52,723 INFO L226 Difference]: Without dead ends: 2254 [2024-11-24 00:34:52,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:52,726 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 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 [2024-11-24 00:34:52,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2024-11-24 00:34:52,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2024-11-24 00:34:52,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 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) [2024-11-24 00:34:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2024-11-24 00:34:52,797 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2024-11-24 00:34:52,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:52,797 INFO L471 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2024-11-24 00:34:52,797 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) [2024-11-24 00:34:52,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2024-11-24 00:34:52,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:34:52,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:52,798 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] [2024-11-24 00:34:52,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:34:52,799 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:52,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:52,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2024-11-24 00:34:52,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:52,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579682457] [2024-11-24 00:34:52,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:52,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:34:52,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:52,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579682457] [2024-11-24 00:34:52,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579682457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:52,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:52,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:34:52,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612701960] [2024-11-24 00:34:52,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:52,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:34:52,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:52,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:34:52,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:34:52,926 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2024-11-24 00:34:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:53,056 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2024-11-24 00:34:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:34:53,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 56 [2024-11-24 00:34:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:53,066 INFO L225 Difference]: With dead ends: 3508 [2024-11-24 00:34:53,067 INFO L226 Difference]: Without dead ends: 3090 [2024-11-24 00:34:53,068 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 [2024-11-24 00:34:53,069 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:53,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:53,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2024-11-24 00:34:53,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2024-11-24 00:34:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 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) [2024-11-24 00:34:53,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2024-11-24 00:34:53,159 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2024-11-24 00:34:53,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:53,159 INFO L471 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2024-11-24 00:34:53,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2024-11-24 00:34:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2024-11-24 00:34:53,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 00:34:53,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:53,161 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, 1, 1, 1] [2024-11-24 00:34:53,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:34:53,162 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:53,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2024-11-24 00:34:53,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:53,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393646400] [2024-11-24 00:34:53,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:53,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:53,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393646400] [2024-11-24 00:34:53,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393646400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:53,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:53,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:34:53,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854579245] [2024-11-24 00:34:53,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:53,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:53,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:53,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:53,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:53,278 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-24 00:34:53,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:53,332 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2024-11-24 00:34:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:53,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2024-11-24 00:34:53,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:53,342 INFO L225 Difference]: With dead ends: 3608 [2024-11-24 00:34:53,342 INFO L226 Difference]: Without dead ends: 1734 [2024-11-24 00:34:53,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:53,345 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 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 [2024-11-24 00:34:53,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2024-11-24 00:34:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2024-11-24 00:34:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 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) [2024-11-24 00:34:53,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2024-11-24 00:34:53,455 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2024-11-24 00:34:53,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:53,455 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2024-11-24 00:34:53,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-11-24 00:34:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2024-11-24 00:34:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 00:34:53,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:53,457 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] [2024-11-24 00:34:53,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:34:53,458 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:53,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2024-11-24 00:34:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:53,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661425614] [2024-11-24 00:34:53,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:53,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:53,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:53,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661425614] [2024-11-24 00:34:53,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661425614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:53,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:53,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:34:53,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556498704] [2024-11-24 00:34:53,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:53,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:53,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:53,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:53,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:53,563 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-11-24 00:34:53,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:53,603 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2024-11-24 00:34:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:34:53,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 [2024-11-24 00:34:53,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:53,612 INFO L225 Difference]: With dead ends: 2204 [2024-11-24 00:34:53,612 INFO L226 Difference]: Without dead ends: 1266 [2024-11-24 00:34:53,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:53,614 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 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 [2024-11-24 00:34:53,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:34:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-24 00:34:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2024-11-24 00:34:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 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) [2024-11-24 00:34:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2024-11-24 00:34:53,659 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2024-11-24 00:34:53,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:53,659 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2024-11-24 00:34:53,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-11-24 00:34:53,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2024-11-24 00:34:53,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 00:34:53,660 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:53,660 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, 1, 1, 1] [2024-11-24 00:34:53,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:34:53,661 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:53,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2024-11-24 00:34:53,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:53,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476429434] [2024-11-24 00:34:53,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:53,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:55,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476429434] [2024-11-24 00:34:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476429434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:34:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11732371] [2024-11-24 00:34:55,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:55,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:34:55,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:34:55,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:34:55,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:34:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:55,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:34:55,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:34:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:34:56,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:34:56,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:34:56,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11732371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:34:56,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:34:56,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-24 00:34:56,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637835344] [2024-11-24 00:34:56,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:34:56,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 00:34:56,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:56,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 00:34:56,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:34:56,390 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 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) [2024-11-24 00:34:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:34:59,008 INFO L93 Difference]: Finished difference Result 3665 states and 5284 transitions. [2024-11-24 00:34:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-24 00:34:59,009 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 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 61 [2024-11-24 00:34:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:34:59,023 INFO L225 Difference]: With dead ends: 3665 [2024-11-24 00:34:59,023 INFO L226 Difference]: Without dead ends: 3195 [2024-11-24 00:34:59,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-24 00:34:59,026 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 14347 mSDsluCounter, 7682 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14347 SdHoareTripleChecker+Valid, 9181 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:34:59,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14347 Valid, 9181 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:34:59,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2024-11-24 00:34:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3161. [2024-11-24 00:34:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3161 states, 3159 states have (on average 1.4102564102564104) internal successors, (4455), 3160 states have internal predecessors, (4455), 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) [2024-11-24 00:34:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 4455 transitions. [2024-11-24 00:34:59,155 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 4455 transitions. Word has length 61 [2024-11-24 00:34:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:34:59,155 INFO L471 AbstractCegarLoop]: Abstraction has 3161 states and 4455 transitions. [2024-11-24 00:34:59,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 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) [2024-11-24 00:34:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 4455 transitions. [2024-11-24 00:34:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 00:34:59,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:34:59,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:34:59,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:34:59,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:34:59,360 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:34:59,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:34:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash -651882757, now seen corresponding path program 1 times [2024-11-24 00:34:59,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:34:59,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064122019] [2024-11-24 00:34:59,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:34:59,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:34:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:34:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:34:59,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:34:59,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064122019] [2024-11-24 00:34:59,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064122019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:34:59,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:34:59,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:34:59,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210720920] [2024-11-24 00:34:59,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:34:59,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:34:59,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:34:59,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:34:59,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:34:59,447 INFO L87 Difference]: Start difference. First operand 3161 states and 4455 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2024-11-24 00:35:04,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:04,191 INFO L93 Difference]: Finished difference Result 4665 states and 7328 transitions. [2024-11-24 00:35:04,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:35:04,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2024-11-24 00:35:04,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:04,200 INFO L225 Difference]: With dead ends: 4665 [2024-11-24 00:35:04,200 INFO L226 Difference]: Without dead ends: 3912 [2024-11-24 00:35:04,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:35:04,202 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 826 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:04,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 149 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-24 00:35:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2024-11-24 00:35:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3912. [2024-11-24 00:35:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3910 states have (on average 1.4910485933503836) internal successors, (5830), 3911 states have internal predecessors, (5830), 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) [2024-11-24 00:35:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 5830 transitions. [2024-11-24 00:35:04,320 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 5830 transitions. Word has length 61 [2024-11-24 00:35:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:04,320 INFO L471 AbstractCegarLoop]: Abstraction has 3912 states and 5830 transitions. [2024-11-24 00:35:04,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2024-11-24 00:35:04,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 5830 transitions. [2024-11-24 00:35:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 00:35:04,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:04,322 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] [2024-11-24 00:35:04,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:35:04,323 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:35:04,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:04,323 INFO L85 PathProgramCache]: Analyzing trace with hash 459765187, now seen corresponding path program 1 times [2024-11-24 00:35:04,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:04,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110683325] [2024-11-24 00:35:04,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:04,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:06,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110683325] [2024-11-24 00:35:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110683325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:35:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979786562] [2024-11-24 00:35:06,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:06,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:06,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:06,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:35:06,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:35:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:06,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:35:06,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:07,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:35:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:08,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979786562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:35:08,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:35:08,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-24 00:35:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195560031] [2024-11-24 00:35:08,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:35:08,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 00:35:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:08,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 00:35:08,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-24 00:35:08,248 INFO L87 Difference]: Start difference. First operand 3912 states and 5830 transitions. Second operand has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 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) [2024-11-24 00:35:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:09,038 INFO L93 Difference]: Finished difference Result 8019 states and 11020 transitions. [2024-11-24 00:35:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:35:09,039 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 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 [2024-11-24 00:35:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:09,056 INFO L225 Difference]: With dead ends: 8019 [2024-11-24 00:35:09,056 INFO L226 Difference]: Without dead ends: 6060 [2024-11-24 00:35:09,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 00:35:09,060 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 12051 mSDsluCounter, 4782 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12051 SdHoareTripleChecker+Valid, 6277 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:09,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12051 Valid, 6277 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:35:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2024-11-24 00:35:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 5994. [2024-11-24 00:35:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5994 states, 5992 states have (on average 1.395026702269693) internal successors, (8359), 5993 states have internal predecessors, (8359), 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) [2024-11-24 00:35:09,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5994 states to 5994 states and 8359 transitions. [2024-11-24 00:35:09,237 INFO L78 Accepts]: Start accepts. Automaton has 5994 states and 8359 transitions. Word has length 62 [2024-11-24 00:35:09,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:09,238 INFO L471 AbstractCegarLoop]: Abstraction has 5994 states and 8359 transitions. [2024-11-24 00:35:09,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.769230769230769) internal successors, (150), 25 states have internal predecessors, (150), 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) [2024-11-24 00:35:09,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5994 states and 8359 transitions. [2024-11-24 00:35:09,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 00:35:09,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:09,239 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, 1, 1] [2024-11-24 00:35:09,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:35:09,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:35:09,440 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:35:09,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:09,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1147902773, now seen corresponding path program 1 times [2024-11-24 00:35:09,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:09,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744549222] [2024-11-24 00:35:09,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:09,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:10,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:10,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744549222] [2024-11-24 00:35:10,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744549222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:35:10,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371199203] [2024-11-24 00:35:10,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:10,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:10,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:10,165 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:35:10,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:35:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:10,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 00:35:10,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:10,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:35:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371199203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:35:12,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:35:12,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-24 00:35:12,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999859929] [2024-11-24 00:35:12,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:35:12,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-24 00:35:12,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:12,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-24 00:35:12,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-24 00:35:12,010 INFO L87 Difference]: Start difference. First operand 5994 states and 8359 transitions. Second operand has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 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) [2024-11-24 00:35:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:15,530 INFO L93 Difference]: Finished difference Result 14015 states and 18419 transitions. [2024-11-24 00:35:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-24 00:35:15,531 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 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 62 [2024-11-24 00:35:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:15,550 INFO L225 Difference]: With dead ends: 14015 [2024-11-24 00:35:15,550 INFO L226 Difference]: Without dead ends: 10055 [2024-11-24 00:35:15,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1214, Invalid=5592, Unknown=0, NotChecked=0, Total=6806 [2024-11-24 00:35:15,557 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 20416 mSDsluCounter, 16805 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20416 SdHoareTripleChecker+Valid, 18313 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:15,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20416 Valid, 18313 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:35:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10055 states. [2024-11-24 00:35:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10055 to 6653. [2024-11-24 00:35:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6653 states, 6651 states have (on average 1.3794918057434973) internal successors, (9175), 6652 states have internal predecessors, (9175), 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) [2024-11-24 00:35:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6653 states to 6653 states and 9175 transitions. [2024-11-24 00:35:15,782 INFO L78 Accepts]: Start accepts. Automaton has 6653 states and 9175 transitions. Word has length 62 [2024-11-24 00:35:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:15,782 INFO L471 AbstractCegarLoop]: Abstraction has 6653 states and 9175 transitions. [2024-11-24 00:35:15,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.9375) internal successors, (158), 32 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) [2024-11-24 00:35:15,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6653 states and 9175 transitions. [2024-11-24 00:35:15,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 00:35:15,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:15,784 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, 1] [2024-11-24 00:35:15,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:35:15,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:15,988 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:35:15,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:15,988 INFO L85 PathProgramCache]: Analyzing trace with hash 807603108, now seen corresponding path program 1 times [2024-11-24 00:35:15,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:15,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123655609] [2024-11-24 00:35:15,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:15,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:16,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:16,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123655609] [2024-11-24 00:35:16,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123655609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:35:16,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502730614] [2024-11-24 00:35:16,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:16,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:16,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:16,418 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:35:16,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:35:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:16,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 00:35:16,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:18,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:35:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:19,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502730614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:35:19,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:35:19,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-24 00:35:19,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324128185] [2024-11-24 00:35:19,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:35:19,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 00:35:19,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:19,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 00:35:19,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:35:19,614 INFO L87 Difference]: Start difference. First operand 6653 states and 9175 transitions. Second operand has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 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) [2024-11-24 00:35:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:21,619 INFO L93 Difference]: Finished difference Result 13303 states and 17478 transitions. [2024-11-24 00:35:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 00:35:21,619 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 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 63 [2024-11-24 00:35:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:21,639 INFO L225 Difference]: With dead ends: 13303 [2024-11-24 00:35:21,639 INFO L226 Difference]: Without dead ends: 8989 [2024-11-24 00:35:21,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=637, Invalid=2015, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 00:35:21,645 INFO L435 NwaCegarLoop]: 1514 mSDtfsCounter, 17081 mSDsluCounter, 5061 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17081 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:21,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17081 Valid, 6575 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:35:21,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8989 states. [2024-11-24 00:35:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8989 to 8565. [2024-11-24 00:35:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8565 states, 8563 states have (on average 1.3383160107438983) internal successors, (11460), 8564 states have internal predecessors, (11460), 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) [2024-11-24 00:35:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8565 states to 8565 states and 11460 transitions. [2024-11-24 00:35:21,998 INFO L78 Accepts]: Start accepts. Automaton has 8565 states and 11460 transitions. Word has length 63 [2024-11-24 00:35:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:21,998 INFO L471 AbstractCegarLoop]: Abstraction has 8565 states and 11460 transitions. [2024-11-24 00:35:21,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.111111111111111) internal successors, (165), 26 states have internal predecessors, (165), 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) [2024-11-24 00:35:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 8565 states and 11460 transitions. [2024-11-24 00:35:22,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 00:35:22,000 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:22,000 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, 1, 1, 1] [2024-11-24 00:35:22,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:35:22,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:22,204 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:35:22,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:22,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1786741782, now seen corresponding path program 1 times [2024-11-24 00:35:22,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:22,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881847578] [2024-11-24 00:35:22,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:22,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:24,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:24,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881847578] [2024-11-24 00:35:24,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881847578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:35:24,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726574698] [2024-11-24 00:35:24,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:24,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:24,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:24,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:35:24,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:35:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:24,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:35:24,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:27,818 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:35:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:29,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726574698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:35:29,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:35:29,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 15] total 51 [2024-11-24 00:35:29,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144394448] [2024-11-24 00:35:29,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:35:29,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-24 00:35:29,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:29,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-24 00:35:29,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2024-11-24 00:35:29,743 INFO L87 Difference]: Start difference. First operand 8565 states and 11460 transitions. Second operand has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 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) [2024-11-24 00:35:55,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:55,178 INFO L93 Difference]: Finished difference Result 15291 states and 19717 transitions. [2024-11-24 00:35:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-24 00:35:55,179 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 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 63 [2024-11-24 00:35:55,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:35:55,198 INFO L225 Difference]: With dead ends: 15291 [2024-11-24 00:35:55,198 INFO L226 Difference]: Without dead ends: 12452 [2024-11-24 00:35:55,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5729 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=4031, Invalid=15991, Unknown=0, NotChecked=0, Total=20022 [2024-11-24 00:35:55,206 INFO L435 NwaCegarLoop]: 1536 mSDtfsCounter, 23531 mSDsluCounter, 20536 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23531 SdHoareTripleChecker+Valid, 22072 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:35:55,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23531 Valid, 22072 Invalid, 2161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [133 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 00:35:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2024-11-24 00:35:55,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 10636. [2024-11-24 00:35:55,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10636 states, 10634 states have (on average 1.3189768666541282) internal successors, (14026), 10635 states have internal predecessors, (14026), 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) [2024-11-24 00:35:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10636 states to 10636 states and 14026 transitions. [2024-11-24 00:35:55,838 INFO L78 Accepts]: Start accepts. Automaton has 10636 states and 14026 transitions. Word has length 63 [2024-11-24 00:35:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:35:55,839 INFO L471 AbstractCegarLoop]: Abstraction has 10636 states and 14026 transitions. [2024-11-24 00:35:55,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.411764705882353) internal successors, (174), 51 states have internal predecessors, (174), 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) [2024-11-24 00:35:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 10636 states and 14026 transitions. [2024-11-24 00:35:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 00:35:55,840 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:35:55,840 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, 1, 1, 1, 1] [2024-11-24 00:35:55,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:35:56,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 00:35:56,040 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:35:56,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:35:56,041 INFO L85 PathProgramCache]: Analyzing trace with hash 532152701, now seen corresponding path program 1 times [2024-11-24 00:35:56,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:35:56,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206683661] [2024-11-24 00:35:56,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:56,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:35:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:57,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206683661] [2024-11-24 00:35:57,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206683661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:35:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002476793] [2024-11-24 00:35:57,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:35:57,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:35:57,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:57,184 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:35:57,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:35:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:57,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 00:35:57,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:35:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:58,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:35:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:35:59,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002476793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:35:59,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:35:59,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 34 [2024-11-24 00:35:59,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317156495] [2024-11-24 00:35:59,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:35:59,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 00:35:59,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:59,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 00:35:59,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:35:59,361 INFO L87 Difference]: Start difference. First operand 10636 states and 14026 transitions. Second operand has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 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) [2024-11-24 00:36:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:02,780 INFO L93 Difference]: Finished difference Result 14134 states and 18303 transitions. [2024-11-24 00:36:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-24 00:36:02,781 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 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 64 [2024-11-24 00:36:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:02,795 INFO L225 Difference]: With dead ends: 14134 [2024-11-24 00:36:02,795 INFO L226 Difference]: Without dead ends: 10323 [2024-11-24 00:36:02,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=822, Invalid=2960, Unknown=0, NotChecked=0, Total=3782 [2024-11-24 00:36:02,801 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 17257 mSDsluCounter, 15658 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17257 SdHoareTripleChecker+Valid, 17175 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:02,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17257 Valid, 17175 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 00:36:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10323 states. [2024-11-24 00:36:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10323 to 8705. [2024-11-24 00:36:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8705 states, 8703 states have (on average 1.3340227507755946) internal successors, (11610), 8704 states have internal predecessors, (11610), 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) [2024-11-24 00:36:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8705 states to 8705 states and 11610 transitions. [2024-11-24 00:36:03,236 INFO L78 Accepts]: Start accepts. Automaton has 8705 states and 11610 transitions. Word has length 64 [2024-11-24 00:36:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:03,236 INFO L471 AbstractCegarLoop]: Abstraction has 8705 states and 11610 transitions. [2024-11-24 00:36:03,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.0) internal successors, (170), 34 states have internal predecessors, (170), 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) [2024-11-24 00:36:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 8705 states and 11610 transitions. [2024-11-24 00:36:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-24 00:36:03,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:03,237 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, 1, 1, 1] [2024-11-24 00:36:03,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:36:03,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-24 00:36:03,442 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:03,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:03,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1624666796, now seen corresponding path program 1 times [2024-11-24 00:36:03,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:03,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154071568] [2024-11-24 00:36:03,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:03,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:05,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:05,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154071568] [2024-11-24 00:36:05,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154071568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:36:05,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396573441] [2024-11-24 00:36:05,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:05,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:36:05,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:36:05,774 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:36:05,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:36:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:05,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:36:05,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:36:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:06,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:36:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:08,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396573441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:36:08,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:36:08,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 42 [2024-11-24 00:36:08,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795849987] [2024-11-24 00:36:08,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:36:08,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-24 00:36:08,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:08,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-24 00:36:08,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1593, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 00:36:08,024 INFO L87 Difference]: Start difference. First operand 8705 states and 11610 transitions. Second operand has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 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) [2024-11-24 00:36:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:20,375 INFO L93 Difference]: Finished difference Result 22615 states and 28660 transitions. [2024-11-24 00:36:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-24 00:36:20,376 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 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 65 [2024-11-24 00:36:20,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:20,398 INFO L225 Difference]: With dead ends: 22615 [2024-11-24 00:36:20,398 INFO L226 Difference]: Without dead ends: 18184 [2024-11-24 00:36:20,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=2435, Invalid=9121, Unknown=0, NotChecked=0, Total=11556 [2024-11-24 00:36:20,407 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 16695 mSDsluCounter, 32347 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16695 SdHoareTripleChecker+Valid, 33930 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:20,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16695 Valid, 33930 Invalid, 3211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 00:36:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18184 states. [2024-11-24 00:36:20,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18184 to 5862. [2024-11-24 00:36:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5862 states, 5860 states have (on average 1.392320819112628) internal successors, (8159), 5861 states have internal predecessors, (8159), 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) [2024-11-24 00:36:20,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5862 states to 5862 states and 8159 transitions. [2024-11-24 00:36:20,915 INFO L78 Accepts]: Start accepts. Automaton has 5862 states and 8159 transitions. Word has length 65 [2024-11-24 00:36:20,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:20,915 INFO L471 AbstractCegarLoop]: Abstraction has 5862 states and 8159 transitions. [2024-11-24 00:36:20,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.880952380952381) internal successors, (163), 42 states have internal predecessors, (163), 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) [2024-11-24 00:36:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5862 states and 8159 transitions. [2024-11-24 00:36:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:36:20,917 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:20,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:20,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:36:21,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-24 00:36:21,118 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:21,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:21,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1065912349, now seen corresponding path program 1 times [2024-11-24 00:36:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:21,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311767890] [2024-11-24 00:36:21,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:21,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:21,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:21,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311767890] [2024-11-24 00:36:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311767890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:36:21,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131699034] [2024-11-24 00:36:21,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:21,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:36:21,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:36:21,986 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:36:21,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:36:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:22,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 00:36:22,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:36:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:23,094 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:36:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:24,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131699034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:36:24,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:36:24,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-24 00:36:24,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795207029] [2024-11-24 00:36:24,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:36:24,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 00:36:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:24,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 00:36:24,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:36:24,766 INFO L87 Difference]: Start difference. First operand 5862 states and 8159 transitions. Second operand has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 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) [2024-11-24 00:36:26,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:26,161 INFO L93 Difference]: Finished difference Result 15432 states and 20087 transitions. [2024-11-24 00:36:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-24 00:36:26,161 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 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 [2024-11-24 00:36:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:26,170 INFO L225 Difference]: With dead ends: 15432 [2024-11-24 00:36:26,170 INFO L226 Difference]: Without dead ends: 11433 [2024-11-24 00:36:26,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 00:36:26,174 INFO L435 NwaCegarLoop]: 1516 mSDtfsCounter, 16364 mSDsluCounter, 12108 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16364 SdHoareTripleChecker+Valid, 13624 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:26,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16364 Valid, 13624 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:36:26,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11433 states. [2024-11-24 00:36:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11433 to 10613. [2024-11-24 00:36:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10613 states, 10611 states have (on average 1.308641975308642) internal successors, (13886), 10612 states have internal predecessors, (13886), 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) [2024-11-24 00:36:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10613 states to 10613 states and 13886 transitions. [2024-11-24 00:36:26,742 INFO L78 Accepts]: Start accepts. Automaton has 10613 states and 13886 transitions. Word has length 103 [2024-11-24 00:36:26,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:26,743 INFO L471 AbstractCegarLoop]: Abstraction has 10613 states and 13886 transitions. [2024-11-24 00:36:26,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.333333333333334) internal successors, (225), 26 states have internal predecessors, (225), 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) [2024-11-24 00:36:26,743 INFO L276 IsEmpty]: Start isEmpty. Operand 10613 states and 13886 transitions. [2024-11-24 00:36:26,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:36:26,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:26,746 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, 1, 1, 1, 1] [2024-11-24 00:36:26,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:36:26,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 00:36:26,951 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:26,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1754049935, now seen corresponding path program 1 times [2024-11-24 00:36:26,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:26,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014905192] [2024-11-24 00:36:26,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:26,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:27,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014905192] [2024-11-24 00:36:27,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014905192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:36:27,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326998719] [2024-11-24 00:36:27,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:27,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:36:27,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:36:27,717 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:36:27,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:36:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:27,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 00:36:27,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:36:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:29,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:36:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:30,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326998719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:36:30,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:36:30,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-24 00:36:30,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721504334] [2024-11-24 00:36:30,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:36:30,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 00:36:30,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:30,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 00:36:30,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:36:30,746 INFO L87 Difference]: Start difference. First operand 10613 states and 13886 transitions. Second operand has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 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) [2024-11-24 00:36:32,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:32,062 INFO L93 Difference]: Finished difference Result 15323 states and 19650 transitions. [2024-11-24 00:36:32,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 00:36:32,063 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 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 [2024-11-24 00:36:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:32,070 INFO L225 Difference]: With dead ends: 15323 [2024-11-24 00:36:32,070 INFO L226 Difference]: Without dead ends: 9611 [2024-11-24 00:36:32,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 00:36:32,074 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 11912 mSDsluCounter, 9164 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11912 SdHoareTripleChecker+Valid, 10679 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:32,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11912 Valid, 10679 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:36:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9611 states. [2024-11-24 00:36:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9611 to 9519. [2024-11-24 00:36:32,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9519 states, 9517 states have (on average 1.3104970053588316) internal successors, (12472), 9518 states have internal predecessors, (12472), 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) [2024-11-24 00:36:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9519 states to 9519 states and 12472 transitions. [2024-11-24 00:36:32,552 INFO L78 Accepts]: Start accepts. Automaton has 9519 states and 12472 transitions. Word has length 103 [2024-11-24 00:36:32,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:32,553 INFO L471 AbstractCegarLoop]: Abstraction has 9519 states and 12472 transitions. [2024-11-24 00:36:32,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.037037037037036) internal successors, (217), 26 states have internal predecessors, (217), 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) [2024-11-24 00:36:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 9519 states and 12472 transitions. [2024-11-24 00:36:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:36:32,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:32,556 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, 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] [2024-11-24 00:36:32,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:36:32,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:36:32,760 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:32,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash 856710688, now seen corresponding path program 1 times [2024-11-24 00:36:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:32,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880957268] [2024-11-24 00:36:32,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:36:34,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:34,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880957268] [2024-11-24 00:36:34,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880957268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:36:34,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106149649] [2024-11-24 00:36:34,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:34,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:36:34,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:36:34,161 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:36:34,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:36:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:34,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 00:36:34,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:36:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:36,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:36:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:40,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106149649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:36:40,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:36:40,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2024-11-24 00:36:40,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601947058] [2024-11-24 00:36:40,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:36:40,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-24 00:36:40,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:40,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-24 00:36:40,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2423, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 00:36:40,067 INFO L87 Difference]: Start difference. First operand 9519 states and 12472 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 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) [2024-11-24 00:36:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:51,798 INFO L93 Difference]: Finished difference Result 15217 states and 19341 transitions. [2024-11-24 00:36:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-24 00:36:51,799 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 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 104 [2024-11-24 00:36:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:51,806 INFO L225 Difference]: With dead ends: 15217 [2024-11-24 00:36:51,806 INFO L226 Difference]: Without dead ends: 9687 [2024-11-24 00:36:51,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3017 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=1975, Invalid=10907, Unknown=0, NotChecked=0, Total=12882 [2024-11-24 00:36:51,809 INFO L435 NwaCegarLoop]: 1509 mSDtfsCounter, 26015 mSDsluCounter, 27303 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26015 SdHoareTripleChecker+Valid, 28812 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:51,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26015 Valid, 28812 Invalid, 1799 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [127 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 00:36:51,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9687 states. [2024-11-24 00:36:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9687 to 9203. [2024-11-24 00:36:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9203 states, 9201 states have (on average 1.3150744484295185) internal successors, (12100), 9202 states have internal predecessors, (12100), 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) [2024-11-24 00:36:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9203 states to 9203 states and 12100 transitions. [2024-11-24 00:36:52,325 INFO L78 Accepts]: Start accepts. Automaton has 9203 states and 12100 transitions. Word has length 104 [2024-11-24 00:36:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:52,325 INFO L471 AbstractCegarLoop]: Abstraction has 9203 states and 12100 transitions. [2024-11-24 00:36:52,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 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) [2024-11-24 00:36:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 9203 states and 12100 transitions. [2024-11-24 00:36:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:36:52,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:52,328 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, 1, 1, 1, 1] [2024-11-24 00:36:52,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:36:52,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-24 00:36:52,533 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:52,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:52,533 INFO L85 PathProgramCache]: Analyzing trace with hash 15634770, now seen corresponding path program 1 times [2024-11-24 00:36:52,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:52,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115418568] [2024-11-24 00:36:52,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:52,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:53,426 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:53,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:53,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115418568] [2024-11-24 00:36:53,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115418568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:36:53,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581926516] [2024-11-24 00:36:53,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:53,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:36:53,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:36:53,429 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:36:53,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:36:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:53,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 00:36:53,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:36:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:54,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:36:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:36:58,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581926516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:36:58,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:36:58,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2024-11-24 00:36:58,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259576101] [2024-11-24 00:36:58,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:36:58,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 00:36:58,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:58,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 00:36:58,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 00:36:58,215 INFO L87 Difference]: Start difference. First operand 9203 states and 12100 transitions. Second operand has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 states have internal predecessors, (250), 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) [2024-11-24 00:37:04,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:37:04,950 INFO L93 Difference]: Finished difference Result 20585 states and 25974 transitions. [2024-11-24 00:37:04,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-24 00:37:04,951 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 states have internal predecessors, (250), 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 104 [2024-11-24 00:37:04,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:37:04,961 INFO L225 Difference]: With dead ends: 20585 [2024-11-24 00:37:04,961 INFO L226 Difference]: Without dead ends: 13509 [2024-11-24 00:37:04,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2952 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1986, Invalid=8726, Unknown=0, NotChecked=0, Total=10712 [2024-11-24 00:37:04,967 INFO L435 NwaCegarLoop]: 1623 mSDtfsCounter, 21291 mSDsluCounter, 10585 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21291 SdHoareTripleChecker+Valid, 12208 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:37:04,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21291 Valid, 12208 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 00:37:04,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2024-11-24 00:37:05,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 5383. [2024-11-24 00:37:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5383 states, 5381 states have (on average 1.3871027690020443) internal successors, (7464), 5382 states have internal predecessors, (7464), 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) [2024-11-24 00:37:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5383 states to 5383 states and 7464 transitions. [2024-11-24 00:37:05,327 INFO L78 Accepts]: Start accepts. Automaton has 5383 states and 7464 transitions. Word has length 104 [2024-11-24 00:37:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:37:05,327 INFO L471 AbstractCegarLoop]: Abstraction has 5383 states and 7464 transitions. [2024-11-24 00:37:05,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 states have internal predecessors, (250), 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) [2024-11-24 00:37:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5383 states and 7464 transitions. [2024-11-24 00:37:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:37:05,329 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:37:05,329 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, 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] [2024-11-24 00:37:05,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:37:05,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:37:05,530 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:37:05,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2024-11-24 00:37:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:05,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985048205] [2024-11-24 00:37:05,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:05,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:37:06,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:37:06,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985048205] [2024-11-24 00:37:06,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985048205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:37:06,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411694613] [2024-11-24 00:37:06,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:06,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:37:06,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:37:06,734 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:37:06,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:37:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:37:06,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 00:37:06,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:37:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:37:08,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:37:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:37:12,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411694613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:37:12,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:37:12,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 17] total 53 [2024-11-24 00:37:12,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224542192] [2024-11-24 00:37:12,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:37:12,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-24 00:37:12,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:12,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-24 00:37:12,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2526, Unknown=0, NotChecked=0, Total=2756 [2024-11-24 00:37:12,313 INFO L87 Difference]: Start difference. First operand 5383 states and 7464 transitions. Second operand has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 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) [2024-11-24 00:38:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:38:01,005 INFO L93 Difference]: Finished difference Result 16426 states and 20641 transitions. [2024-11-24 00:38:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-11-24 00:38:01,006 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 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 105 [2024-11-24 00:38:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:38:01,016 INFO L225 Difference]: With dead ends: 16426 [2024-11-24 00:38:01,016 INFO L226 Difference]: Without dead ends: 14463 [2024-11-24 00:38:01,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24928 ImplicationChecksByTransitivity, 45.5s TimeCoverageRelationStatistics Valid=12162, Invalid=59930, Unknown=0, NotChecked=0, Total=72092 [2024-11-24 00:38:01,024 INFO L435 NwaCegarLoop]: 1601 mSDtfsCounter, 23551 mSDsluCounter, 40667 mSDsCounter, 0 mSdLazyCounter, 3742 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23551 SdHoareTripleChecker+Valid, 42268 SdHoareTripleChecker+Invalid, 3953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 3742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:38:01,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23551 Valid, 42268 Invalid, 3953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [211 Valid, 3742 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 00:38:01,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14463 states. [2024-11-24 00:38:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14463 to 11333. [2024-11-24 00:38:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11333 states, 11331 states have (on average 1.286823757832495) internal successors, (14581), 11332 states have internal predecessors, (14581), 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) [2024-11-24 00:38:02,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11333 states to 11333 states and 14581 transitions. [2024-11-24 00:38:02,147 INFO L78 Accepts]: Start accepts. Automaton has 11333 states and 14581 transitions. Word has length 105 [2024-11-24 00:38:02,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:38:02,147 INFO L471 AbstractCegarLoop]: Abstraction has 11333 states and 14581 transitions. [2024-11-24 00:38:02,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 53 states have internal predecessors, (285), 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) [2024-11-24 00:38:02,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11333 states and 14581 transitions. [2024-11-24 00:38:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:38:02,149 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:38:02,150 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, 1, 1, 1, 1, 1] [2024-11-24 00:38:02,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:38:02,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:38:02,350 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:38:02,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:38:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1322155965, now seen corresponding path program 1 times [2024-11-24 00:38:02,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:38:02,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103332394] [2024-11-24 00:38:02,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:38:02,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:38:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:38:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:38:03,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:38:03,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103332394] [2024-11-24 00:38:03,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103332394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:38:03,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071910461] [2024-11-24 00:38:03,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:38:03,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:38:03,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:38:03,485 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:38:03,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:38:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:38:03,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-24 00:38:03,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:38:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:38:09,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:38:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:38:18,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071910461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:38:18,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:38:18,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 32, 27] total 76 [2024-11-24 00:38:18,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371645488] [2024-11-24 00:38:18,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:38:18,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-24 00:38:18,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:38:18,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-24 00:38:18,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=627, Invalid=5073, Unknown=0, NotChecked=0, Total=5700 [2024-11-24 00:38:18,135 INFO L87 Difference]: Start difference. First operand 11333 states and 14581 transitions. Second operand has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 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) [2024-11-24 00:38:59,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:38:59,737 INFO L93 Difference]: Finished difference Result 19339 states and 24355 transitions. [2024-11-24 00:38:59,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-11-24 00:38:59,738 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 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 105 [2024-11-24 00:38:59,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:38:59,750 INFO L225 Difference]: With dead ends: 19339 [2024-11-24 00:38:59,751 INFO L226 Difference]: Without dead ends: 15201 [2024-11-24 00:38:59,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12702 ImplicationChecksByTransitivity, 40.7s TimeCoverageRelationStatistics Valid=6924, Invalid=33276, Unknown=0, NotChecked=0, Total=40200 [2024-11-24 00:38:59,757 INFO L435 NwaCegarLoop]: 1560 mSDtfsCounter, 22231 mSDsluCounter, 34952 mSDsCounter, 0 mSdLazyCounter, 3947 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22231 SdHoareTripleChecker+Valid, 36512 SdHoareTripleChecker+Invalid, 4098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:38:59,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22231 Valid, 36512 Invalid, 4098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [151 Valid, 3947 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 00:38:59,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15201 states. [2024-11-24 00:39:01,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15201 to 14430. [2024-11-24 00:39:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14430 states, 14428 states have (on average 1.2674660382589409) internal successors, (18287), 14429 states have internal predecessors, (18287), 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) [2024-11-24 00:39:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14430 states to 14430 states and 18287 transitions. [2024-11-24 00:39:01,140 INFO L78 Accepts]: Start accepts. Automaton has 14430 states and 18287 transitions. Word has length 105 [2024-11-24 00:39:01,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:01,141 INFO L471 AbstractCegarLoop]: Abstraction has 14430 states and 18287 transitions. [2024-11-24 00:39:01,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 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) [2024-11-24 00:39:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 14430 states and 18287 transitions. [2024-11-24 00:39:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:39:01,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:01,143 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, 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] [2024-11-24 00:39:01,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 00:39:01,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:39:01,348 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:01,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:01,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1973850741, now seen corresponding path program 1 times [2024-11-24 00:39:01,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:01,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579679988] [2024-11-24 00:39:01,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:01,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:03,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:03,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579679988] [2024-11-24 00:39:03,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579679988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:03,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685484708] [2024-11-24 00:39:03,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:03,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:03,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:03,082 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:03,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:39:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:03,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-24 00:39:03,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:05,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:39:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:09,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685484708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:39:09,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:39:09,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 21] total 59 [2024-11-24 00:39:09,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995554340] [2024-11-24 00:39:09,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:39:09,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-24 00:39:09,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:09,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-24 00:39:09,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3177, Unknown=0, NotChecked=0, Total=3422 [2024-11-24 00:39:09,810 INFO L87 Difference]: Start difference. First operand 14430 states and 18287 transitions. Second operand has 59 states, 59 states have (on average 4.915254237288136) internal successors, (290), 59 states have internal predecessors, (290), 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) [2024-11-24 00:39:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:31,425 INFO L93 Difference]: Finished difference Result 30706 states and 37717 transitions. [2024-11-24 00:39:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-24 00:39:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.915254237288136) internal successors, (290), 59 states have internal predecessors, (290), 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 105 [2024-11-24 00:39:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:31,453 INFO L225 Difference]: With dead ends: 30706 [2024-11-24 00:39:31,453 INFO L226 Difference]: Without dead ends: 22845 [2024-11-24 00:39:31,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5470 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=3809, Invalid=18541, Unknown=0, NotChecked=0, Total=22350 [2024-11-24 00:39:31,465 INFO L435 NwaCegarLoop]: 1619 mSDtfsCounter, 28700 mSDsluCounter, 37266 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28700 SdHoareTripleChecker+Valid, 38885 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:39:31,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28700 Valid, 38885 Invalid, 3489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [157 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 00:39:31,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22845 states. [2024-11-24 00:39:33,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22845 to 14452. [2024-11-24 00:39:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14452 states, 14450 states have (on average 1.2642906574394464) internal successors, (18269), 14451 states have internal predecessors, (18269), 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) [2024-11-24 00:39:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14452 states to 14452 states and 18269 transitions. [2024-11-24 00:39:33,430 INFO L78 Accepts]: Start accepts. Automaton has 14452 states and 18269 transitions. Word has length 105 [2024-11-24 00:39:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:33,430 INFO L471 AbstractCegarLoop]: Abstraction has 14452 states and 18269 transitions. [2024-11-24 00:39:33,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.915254237288136) internal successors, (290), 59 states have internal predecessors, (290), 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) [2024-11-24 00:39:33,430 INFO L276 IsEmpty]: Start isEmpty. Operand 14452 states and 18269 transitions. [2024-11-24 00:39:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 00:39:33,431 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:33,431 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, 1, 1, 1, 1] [2024-11-24 00:39:33,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 00:39:33,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:33,632 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:33,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1775421751, now seen corresponding path program 1 times [2024-11-24 00:39:33,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:33,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135939033] [2024-11-24 00:39:33,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:33,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:34,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:34,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135939033] [2024-11-24 00:39:34,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135939033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:34,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138899092] [2024-11-24 00:39:34,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:34,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:34,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:34,197 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:34,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:39:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:34,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 00:39:34,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:36,611 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:36,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:39:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138899092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:39:39,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:39:39,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 17] total 44 [2024-11-24 00:39:39,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125751175] [2024-11-24 00:39:39,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:39:39,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-24 00:39:39,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:39,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-24 00:39:39,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1689, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 00:39:39,400 INFO L87 Difference]: Start difference. First operand 14452 states and 18269 transitions. Second operand has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 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) [2024-11-24 00:39:49,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:49,875 INFO L93 Difference]: Finished difference Result 39167 states and 48068 transitions. [2024-11-24 00:39:49,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-24 00:39:49,876 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 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 107 [2024-11-24 00:39:49,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:49,897 INFO L225 Difference]: With dead ends: 39167 [2024-11-24 00:39:49,897 INFO L226 Difference]: Without dead ends: 29530 [2024-11-24 00:39:49,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3957 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=2529, Invalid=10811, Unknown=0, NotChecked=0, Total=13340 [2024-11-24 00:39:49,903 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 21837 mSDsluCounter, 18062 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21837 SdHoareTripleChecker+Valid, 19635 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:39:49,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21837 Valid, 19635 Invalid, 1708 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 00:39:49,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29530 states. [2024-11-24 00:39:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29530 to 21999. [2024-11-24 00:39:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21999 states, 21997 states have (on average 1.2454880210937855) internal successors, (27397), 21998 states have internal predecessors, (27397), 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) [2024-11-24 00:39:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21999 states to 21999 states and 27397 transitions. [2024-11-24 00:39:52,558 INFO L78 Accepts]: Start accepts. Automaton has 21999 states and 27397 transitions. Word has length 107 [2024-11-24 00:39:52,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:52,558 INFO L471 AbstractCegarLoop]: Abstraction has 21999 states and 27397 transitions. [2024-11-24 00:39:52,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.545454545454546) internal successors, (288), 44 states have internal predecessors, (288), 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) [2024-11-24 00:39:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 21999 states and 27397 transitions. [2024-11-24 00:39:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 00:39:52,559 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:52,560 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, 1, 1, 1, 1, 1] [2024-11-24 00:39:52,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 00:39:52,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:52,760 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:52,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash 2088015337, now seen corresponding path program 1 times [2024-11-24 00:39:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:52,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522615915] [2024-11-24 00:39:52,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:52,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:53,534 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 24 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:53,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522615915] [2024-11-24 00:39:53,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522615915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:53,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473301223] [2024-11-24 00:39:53,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:53,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:53,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:53,536 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:53,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 00:39:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:53,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:39:53,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:54,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:39:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 41 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:39:56,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473301223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:39:56,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:39:56,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 12] total 40 [2024-11-24 00:39:56,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164015806] [2024-11-24 00:39:56,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:39:56,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-24 00:39:56,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:56,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-24 00:39:56,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 00:39:56,988 INFO L87 Difference]: Start difference. First operand 21999 states and 27397 transitions. Second operand has 40 states, 40 states have (on average 7.3) internal successors, (292), 40 states have internal predecessors, (292), 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) [2024-11-24 00:40:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:40:03,631 INFO L93 Difference]: Finished difference Result 49728 states and 60780 transitions. [2024-11-24 00:40:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 00:40:03,632 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.3) internal successors, (292), 40 states have internal predecessors, (292), 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 107 [2024-11-24 00:40:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:40:03,656 INFO L225 Difference]: With dead ends: 49728 [2024-11-24 00:40:03,656 INFO L226 Difference]: Without dead ends: 34435 [2024-11-24 00:40:03,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=972, Invalid=4140, Unknown=0, NotChecked=0, Total=5112 [2024-11-24 00:40:03,665 INFO L435 NwaCegarLoop]: 1571 mSDtfsCounter, 25867 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25867 SdHoareTripleChecker+Valid, 19335 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:40:03,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25867 Valid, 19335 Invalid, 1075 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:40:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34435 states. [2024-11-24 00:40:07,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34435 to 27308. [2024-11-24 00:40:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27308 states, 27306 states have (on average 1.2320002929759026) internal successors, (33641), 27307 states have internal predecessors, (33641), 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) [2024-11-24 00:40:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27308 states to 27308 states and 33641 transitions. [2024-11-24 00:40:07,050 INFO L78 Accepts]: Start accepts. Automaton has 27308 states and 33641 transitions. Word has length 107 [2024-11-24 00:40:07,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:40:07,050 INFO L471 AbstractCegarLoop]: Abstraction has 27308 states and 33641 transitions. [2024-11-24 00:40:07,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.3) internal successors, (292), 40 states have internal predecessors, (292), 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) [2024-11-24 00:40:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 27308 states and 33641 transitions. [2024-11-24 00:40:07,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 00:40:07,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:40:07,052 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, 1, 1, 1, 1] [2024-11-24 00:40:07,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 00:40:07,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:07,252 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:40:07,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash 117034249, now seen corresponding path program 1 times [2024-11-24 00:40:07,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:07,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852208263] [2024-11-24 00:40:07,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:07,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852208263] [2024-11-24 00:40:09,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852208263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:40:09,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094261364] [2024-11-24 00:40:09,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:09,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:09,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:09,230 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:09,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 00:40:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:09,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-24 00:40:09,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:40:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:14,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:40:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:40:22,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094261364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:40:22,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:40:22,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27, 23] total 77 [2024-11-24 00:40:22,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044780732] [2024-11-24 00:40:22,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:40:22,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-24 00:40:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:40:22,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-24 00:40:22,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=5434, Unknown=0, NotChecked=0, Total=5852 [2024-11-24 00:40:22,492 INFO L87 Difference]: Start difference. First operand 27308 states and 33641 transitions. Second operand has 77 states, 77 states have (on average 3.792207792207792) internal successors, (292), 77 states have internal predecessors, (292), 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) [2024-11-24 00:41:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:41:49,188 INFO L93 Difference]: Finished difference Result 49865 states and 60556 transitions. [2024-11-24 00:41:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2024-11-24 00:41:49,189 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.792207792207792) internal successors, (292), 77 states have internal predecessors, (292), 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 107 [2024-11-24 00:41:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:41:49,227 INFO L225 Difference]: With dead ends: 49865 [2024-11-24 00:41:49,227 INFO L226 Difference]: Without dead ends: 32282 [2024-11-24 00:41:49,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23641 ImplicationChecksByTransitivity, 80.3s TimeCoverageRelationStatistics Valid=9158, Invalid=57664, Unknown=0, NotChecked=0, Total=66822 [2024-11-24 00:41:49,242 INFO L435 NwaCegarLoop]: 1638 mSDtfsCounter, 30546 mSDsluCounter, 44088 mSDsCounter, 0 mSdLazyCounter, 6143 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30546 SdHoareTripleChecker+Valid, 45726 SdHoareTripleChecker+Invalid, 6376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 6143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:41:49,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30546 Valid, 45726 Invalid, 6376 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [233 Valid, 6143 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-24 00:41:49,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32282 states. [2024-11-24 00:41:53,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32282 to 27603. [2024-11-24 00:41:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27603 states, 27601 states have (on average 1.2298829752545197) internal successors, (33946), 27602 states have internal predecessors, (33946), 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) [2024-11-24 00:41:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27603 states to 27603 states and 33946 transitions. [2024-11-24 00:41:53,294 INFO L78 Accepts]: Start accepts. Automaton has 27603 states and 33946 transitions. Word has length 107 [2024-11-24 00:41:53,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:41:53,294 INFO L471 AbstractCegarLoop]: Abstraction has 27603 states and 33946 transitions. [2024-11-24 00:41:53,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.792207792207792) internal successors, (292), 77 states have internal predecessors, (292), 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) [2024-11-24 00:41:53,295 INFO L276 IsEmpty]: Start isEmpty. Operand 27603 states and 33946 transitions. [2024-11-24 00:41:53,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 00:41:53,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:41:53,296 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, 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] [2024-11-24 00:41:53,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 00:41:53,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:41:53,496 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:41:53,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:41:53,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1360080118, now seen corresponding path program 1 times [2024-11-24 00:41:53,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:41:53,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087556898] [2024-11-24 00:41:53,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:41:53,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:41:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:41:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:54,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:41:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087556898] [2024-11-24 00:41:54,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087556898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:41:54,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084603206] [2024-11-24 00:41:54,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:41:54,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:41:54,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:41:54,969 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:41:54,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-24 00:41:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:41:55,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-24 00:41:55,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:41:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:41:58,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:42:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:42:07,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084603206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:42:07,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:42:07,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 28] total 76 [2024-11-24 00:42:07,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203423289] [2024-11-24 00:42:07,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:42:07,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-24 00:42:07,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:07,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-24 00:42:07,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=5042, Unknown=0, NotChecked=0, Total=5700 [2024-11-24 00:42:07,807 INFO L87 Difference]: Start difference. First operand 27603 states and 33946 transitions. Second operand has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 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) [2024-11-24 00:43:10,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:10,924 INFO L93 Difference]: Finished difference Result 49626 states and 60238 transitions. [2024-11-24 00:43:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-11-24 00:43:10,924 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 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 108 [2024-11-24 00:43:10,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:10,963 INFO L225 Difference]: With dead ends: 49626 [2024-11-24 00:43:10,963 INFO L226 Difference]: Without dead ends: 32290 [2024-11-24 00:43:10,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18130 ImplicationChecksByTransitivity, 58.9s TimeCoverageRelationStatistics Valid=9606, Invalid=46326, Unknown=0, NotChecked=0, Total=55932 [2024-11-24 00:43:10,979 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 32561 mSDsluCounter, 34585 mSDsCounter, 0 mSdLazyCounter, 3402 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32561 SdHoareTripleChecker+Valid, 36142 SdHoareTripleChecker+Invalid, 3603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:10,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32561 Valid, 36142 Invalid, 3603 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [201 Valid, 3402 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-24 00:43:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32290 states. [2024-11-24 00:43:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32290 to 26466. [2024-11-24 00:43:16,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26466 states, 26464 states have (on average 1.2326178960096734) internal successors, (32620), 26465 states have internal predecessors, (32620), 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) [2024-11-24 00:43:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26466 states to 26466 states and 32620 transitions. [2024-11-24 00:43:16,312 INFO L78 Accepts]: Start accepts. Automaton has 26466 states and 32620 transitions. Word has length 108 [2024-11-24 00:43:16,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:16,313 INFO L471 AbstractCegarLoop]: Abstraction has 26466 states and 32620 transitions. [2024-11-24 00:43:16,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.9473684210526314) internal successors, (300), 76 states have internal predecessors, (300), 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) [2024-11-24 00:43:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 26466 states and 32620 transitions. [2024-11-24 00:43:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-24 00:43:16,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:16,314 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, 1, 1, 1, 1, 1] [2024-11-24 00:43:16,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-24 00:43:16,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-24 00:43:16,514 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:16,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash 896728914, now seen corresponding path program 1 times [2024-11-24 00:43:16,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:43:16,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236966054] [2024-11-24 00:43:16,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:16,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:43:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:43:18,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:43:18,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236966054] [2024-11-24 00:43:18,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236966054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:43:18,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927205563] [2024-11-24 00:43:18,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:18,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:43:18,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:43:18,370 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:43:18,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 00:43:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:18,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-24 00:43:18,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:43:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:43:22,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:43:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:43:29,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927205563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:43:29,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:43:29,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 26] total 75 [2024-11-24 00:43:29,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487431644] [2024-11-24 00:43:29,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:43:29,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-24 00:43:29,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:43:29,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-24 00:43:29,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=5136, Unknown=0, NotChecked=0, Total=5550 [2024-11-24 00:43:29,591 INFO L87 Difference]: Start difference. First operand 26466 states and 32620 transitions. Second operand has 75 states, 75 states have (on average 3.84) internal successors, (288), 75 states have internal predecessors, (288), 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) [2024-11-24 00:45:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:45:01,764 INFO L93 Difference]: Finished difference Result 38396 states and 46848 transitions. [2024-11-24 00:45:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2024-11-24 00:45:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.84) internal successors, (288), 75 states have internal predecessors, (288), 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 108 [2024-11-24 00:45:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:45:01,794 INFO L225 Difference]: With dead ends: 38396 [2024-11-24 00:45:01,795 INFO L226 Difference]: Without dead ends: 29880 [2024-11-24 00:45:01,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21772 ImplicationChecksByTransitivity, 85.4s TimeCoverageRelationStatistics Valid=9343, Invalid=57997, Unknown=0, NotChecked=0, Total=67340 [2024-11-24 00:45:01,807 INFO L435 NwaCegarLoop]: 1564 mSDtfsCounter, 37781 mSDsluCounter, 32113 mSDsCounter, 0 mSdLazyCounter, 4060 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37781 SdHoareTripleChecker+Valid, 33677 SdHoareTripleChecker+Invalid, 4267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 4060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:45:01,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37781 Valid, 33677 Invalid, 4267 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [207 Valid, 4060 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-24 00:45:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29880 states. [2024-11-24 00:45:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29880 to 27064. [2024-11-24 00:45:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27064 states, 27062 states have (on average 1.2303229620870593) internal successors, (33295), 27063 states have internal predecessors, (33295), 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) [2024-11-24 00:45:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27064 states to 27064 states and 33295 transitions. [2024-11-24 00:45:07,047 INFO L78 Accepts]: Start accepts. Automaton has 27064 states and 33295 transitions. Word has length 108 [2024-11-24 00:45:07,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:45:07,047 INFO L471 AbstractCegarLoop]: Abstraction has 27064 states and 33295 transitions. [2024-11-24 00:45:07,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.84) internal successors, (288), 75 states have internal predecessors, (288), 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) [2024-11-24 00:45:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 27064 states and 33295 transitions. [2024-11-24 00:45:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-24 00:45:07,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:45:07,049 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, 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] [2024-11-24 00:45:07,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-24 00:45:07,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-24 00:45:07,249 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:45:07,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:45:07,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1964330765, now seen corresponding path program 1 times [2024-11-24 00:45:07,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:45:07,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435338044] [2024-11-24 00:45:07,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:07,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:45:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:45:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435338044] [2024-11-24 00:45:09,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435338044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:45:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300852467] [2024-11-24 00:45:09,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:45:09,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:45:09,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:45:09,271 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:45:09,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 00:45:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:45:09,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-24 00:45:09,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:45:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:17,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:45:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:45:23,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300852467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:45:23,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:45:23,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 73 [2024-11-24 00:45:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687627382] [2024-11-24 00:45:23,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:45:23,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-24 00:45:23,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:45:23,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-24 00:45:23,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4884, Unknown=0, NotChecked=0, Total=5256 [2024-11-24 00:45:23,317 INFO L87 Difference]: Start difference. First operand 27064 states and 33295 transitions. Second operand has 73 states, 73 states have (on average 4.232876712328767) internal successors, (309), 73 states have internal predecessors, (309), 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) [2024-11-24 00:46:31,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:46:31,564 INFO L93 Difference]: Finished difference Result 47701 states and 58030 transitions. [2024-11-24 00:46:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-11-24 00:46:31,564 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.232876712328767) internal successors, (309), 73 states have internal predecessors, (309), 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 109 [2024-11-24 00:46:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:46:31,592 INFO L225 Difference]: With dead ends: 47701 [2024-11-24 00:46:31,592 INFO L226 Difference]: Without dead ends: 29201 [2024-11-24 00:46:31,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11546 ImplicationChecksByTransitivity, 61.7s TimeCoverageRelationStatistics Valid=5041, Invalid=37601, Unknown=0, NotChecked=0, Total=42642 [2024-11-24 00:46:31,602 INFO L435 NwaCegarLoop]: 1610 mSDtfsCounter, 35672 mSDsluCounter, 40650 mSDsCounter, 0 mSdLazyCounter, 5661 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35672 SdHoareTripleChecker+Valid, 42260 SdHoareTripleChecker+Invalid, 5888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 5661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:46:31,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35672 Valid, 42260 Invalid, 5888 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [227 Valid, 5661 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-24 00:46:31,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29201 states. [2024-11-24 00:46:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29201 to 23209. [2024-11-24 00:46:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23209 states, 23207 states have (on average 1.2385487137501616) internal successors, (28743), 23208 states have internal predecessors, (28743), 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) [2024-11-24 00:46:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23209 states to 23209 states and 28743 transitions. [2024-11-24 00:46:35,754 INFO L78 Accepts]: Start accepts. Automaton has 23209 states and 28743 transitions. Word has length 109 [2024-11-24 00:46:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:46:35,754 INFO L471 AbstractCegarLoop]: Abstraction has 23209 states and 28743 transitions. [2024-11-24 00:46:35,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.232876712328767) internal successors, (309), 73 states have internal predecessors, (309), 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) [2024-11-24 00:46:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 23209 states and 28743 transitions. [2024-11-24 00:46:35,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-24 00:46:35,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:46:35,756 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 00:46:35,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 00:46:35,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-24 00:46:35,956 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:46:35,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:46:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1787027792, now seen corresponding path program 1 times [2024-11-24 00:46:35,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:46:35,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330846455] [2024-11-24 00:46:35,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:35,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:46:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:36,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:46:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330846455] [2024-11-24 00:46:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330846455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:46:36,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:46:36,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:46:36,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445017890] [2024-11-24 00:46:36,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:46:36,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:46:36,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:46:36,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:46:36,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:46:36,025 INFO L87 Difference]: Start difference. First operand 23209 states and 28743 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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) [2024-11-24 00:46:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:46:44,023 INFO L93 Difference]: Finished difference Result 26215 states and 34366 transitions. [2024-11-24 00:46:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:46:44,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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 134 [2024-11-24 00:46:44,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:46:44,045 INFO L225 Difference]: With dead ends: 26215 [2024-11-24 00:46:44,045 INFO L226 Difference]: Without dead ends: 24711 [2024-11-24 00:46:44,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:46:44,049 INFO L435 NwaCegarLoop]: 557 mSDtfsCounter, 795 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:46:44,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 564 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 00:46:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24711 states. [2024-11-24 00:46:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24711 to 24711. [2024-11-24 00:46:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24711 states, 24709 states have (on average 1.2417742522967339) internal successors, (30683), 24710 states have internal predecessors, (30683), 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) [2024-11-24 00:46:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24711 states to 24711 states and 30683 transitions. [2024-11-24 00:46:48,149 INFO L78 Accepts]: Start accepts. Automaton has 24711 states and 30683 transitions. Word has length 134 [2024-11-24 00:46:48,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:46:48,150 INFO L471 AbstractCegarLoop]: Abstraction has 24711 states and 30683 transitions. [2024-11-24 00:46:48,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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) [2024-11-24 00:46:48,150 INFO L276 IsEmpty]: Start isEmpty. Operand 24711 states and 30683 transitions. [2024-11-24 00:46:48,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-24 00:46:48,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:46:48,152 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 00:46:48,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-24 00:46:48,152 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:46:48,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:46:48,153 INFO L85 PathProgramCache]: Analyzing trace with hash 129702219, now seen corresponding path program 1 times [2024-11-24 00:46:48,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:46:48,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675086937] [2024-11-24 00:46:48,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:46:48,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:46:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:46:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:46:48,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:46:48,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675086937] [2024-11-24 00:46:48,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675086937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:46:48,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:46:48,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:46:48,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616288638] [2024-11-24 00:46:48,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:46:48,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:46:48,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:46:48,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:46:48,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:46:48,236 INFO L87 Difference]: Start difference. First operand 24711 states and 30683 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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) [2024-11-24 00:46:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:46:56,186 INFO L93 Difference]: Finished difference Result 30723 states and 40187 transitions. [2024-11-24 00:46:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:46:56,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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 136 [2024-11-24 00:46:56,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:46:56,208 INFO L225 Difference]: With dead ends: 30723 [2024-11-24 00:46:56,208 INFO L226 Difference]: Without dead ends: 27717 [2024-11-24 00:46:56,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:46:56,214 INFO L435 NwaCegarLoop]: 615 mSDtfsCounter, 985 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:46:56,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 622 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-24 00:46:56,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27717 states. [2024-11-24 00:47:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27717 to 27715. [2024-11-24 00:47:00,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27715 states, 27713 states have (on average 1.2474290044383503) internal successors, (34570), 27714 states have internal predecessors, (34570), 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) [2024-11-24 00:47:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27715 states to 27715 states and 34570 transitions. [2024-11-24 00:47:00,476 INFO L78 Accepts]: Start accepts. Automaton has 27715 states and 34570 transitions. Word has length 136 [2024-11-24 00:47:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:47:00,476 INFO L471 AbstractCegarLoop]: Abstraction has 27715 states and 34570 transitions. [2024-11-24 00:47:00,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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) [2024-11-24 00:47:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 27715 states and 34570 transitions. [2024-11-24 00:47:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 00:47:00,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:47:00,479 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1] [2024-11-24 00:47:00,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-24 00:47:00,479 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:47:00,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:47:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 289672907, now seen corresponding path program 1 times [2024-11-24 00:47:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:47:00,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863944806] [2024-11-24 00:47:00,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:00,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:47:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 190 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 00:47:01,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:47:01,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863944806] [2024-11-24 00:47:01,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863944806] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:47:01,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315525768] [2024-11-24 00:47:01,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:01,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:47:01,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:47:01,196 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:47:01,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-24 00:47:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:01,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-24 00:47:01,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:47:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:04,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:47:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 37 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:12,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315525768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:47:12,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:47:12,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28, 27] total 59 [2024-11-24 00:47:12,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575124979] [2024-11-24 00:47:12,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:47:12,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 00:47:12,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:47:12,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 00:47:12,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=2925, Unknown=0, NotChecked=0, Total=3540 [2024-11-24 00:47:12,343 INFO L87 Difference]: Start difference. First operand 27715 states and 34570 transitions. Second operand has 60 states, 60 states have (on average 6.05) internal successors, (363), 59 states have internal predecessors, (363), 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) [2024-11-24 00:47:23,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:47:23,202 INFO L93 Difference]: Finished difference Result 45400 states and 56148 transitions. [2024-11-24 00:47:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-24 00:47:23,203 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.05) internal successors, (363), 59 states have internal predecessors, (363), 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 146 [2024-11-24 00:47:23,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:47:23,233 INFO L225 Difference]: With dead ends: 45400 [2024-11-24 00:47:23,234 INFO L226 Difference]: Without dead ends: 35043 [2024-11-24 00:47:23,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3144 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2440, Invalid=9992, Unknown=0, NotChecked=0, Total=12432 [2024-11-24 00:47:23,242 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 16934 mSDsluCounter, 24749 mSDsCounter, 0 mSdLazyCounter, 2066 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16934 SdHoareTripleChecker+Valid, 26282 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:47:23,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16934 Valid, 26282 Invalid, 2113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 2066 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:47:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35043 states. [2024-11-24 00:47:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35043 to 22746. [2024-11-24 00:47:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22746 states, 22744 states have (on average 1.2501319029194513) internal successors, (28433), 22745 states have internal predecessors, (28433), 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) [2024-11-24 00:47:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22746 states to 22746 states and 28433 transitions. [2024-11-24 00:47:26,878 INFO L78 Accepts]: Start accepts. Automaton has 22746 states and 28433 transitions. Word has length 146 [2024-11-24 00:47:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:47:26,879 INFO L471 AbstractCegarLoop]: Abstraction has 22746 states and 28433 transitions. [2024-11-24 00:47:26,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.05) internal successors, (363), 59 states have internal predecessors, (363), 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) [2024-11-24 00:47:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 22746 states and 28433 transitions. [2024-11-24 00:47:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 00:47:26,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:47:26,881 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, 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, 1] [2024-11-24 00:47:26,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-24 00:47:27,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-24 00:47:27,082 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:47:27,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:47:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash 283574013, now seen corresponding path program 1 times [2024-11-24 00:47:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:47:27,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135758462] [2024-11-24 00:47:27,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:27,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:47:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 55 proven. 182 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:47:28,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:47:28,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135758462] [2024-11-24 00:47:28,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135758462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:47:28,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412603413] [2024-11-24 00:47:28,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:47:28,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:47:28,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:47:28,191 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:47:28,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 00:47:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:47:28,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-24 00:47:28,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:47:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 50 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:30,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:47:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 44 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:47:37,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412603413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:47:37,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:47:37,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 20] total 60 [2024-11-24 00:47:37,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511598524] [2024-11-24 00:47:37,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:47:37,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-24 00:47:37,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:47:37,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-24 00:47:37,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=3223, Unknown=0, NotChecked=0, Total=3540 [2024-11-24 00:47:37,566 INFO L87 Difference]: Start difference. First operand 22746 states and 28433 transitions. Second operand has 60 states, 60 states have (on average 6.833333333333333) internal successors, (410), 60 states have internal predecessors, (410), 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) [2024-11-24 00:48:10,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:48:10,167 INFO L93 Difference]: Finished difference Result 50980 states and 61929 transitions. [2024-11-24 00:48:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-24 00:48:10,167 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.833333333333333) internal successors, (410), 60 states have internal predecessors, (410), 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 146 [2024-11-24 00:48:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:48:10,201 INFO L225 Difference]: With dead ends: 50980 [2024-11-24 00:48:10,201 INFO L226 Difference]: Without dead ends: 37911 [2024-11-24 00:48:10,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=4683, Invalid=25419, Unknown=0, NotChecked=0, Total=30102 [2024-11-24 00:48:10,210 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 23520 mSDsluCounter, 39140 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23520 SdHoareTripleChecker+Valid, 40663 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:48:10,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23520 Valid, 40663 Invalid, 2767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 00:48:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37911 states. [2024-11-24 00:48:16,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37911 to 31737. [2024-11-24 00:48:16,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31737 states, 31735 states have (on average 1.2256814242949425) internal successors, (38897), 31736 states have internal predecessors, (38897), 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) [2024-11-24 00:48:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31737 states to 31737 states and 38897 transitions. [2024-11-24 00:48:16,509 INFO L78 Accepts]: Start accepts. Automaton has 31737 states and 38897 transitions. Word has length 146 [2024-11-24 00:48:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:48:16,510 INFO L471 AbstractCegarLoop]: Abstraction has 31737 states and 38897 transitions. [2024-11-24 00:48:16,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.833333333333333) internal successors, (410), 60 states have internal predecessors, (410), 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) [2024-11-24 00:48:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 31737 states and 38897 transitions. [2024-11-24 00:48:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-24 00:48:16,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:48:16,513 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1] [2024-11-24 00:48:16,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 00:48:16,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-24 00:48:16,713 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:48:16,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:48:16,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1346272192, now seen corresponding path program 1 times [2024-11-24 00:48:16,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:48:16,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599729180] [2024-11-24 00:48:16,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:16,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:48:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 145 proven. 73 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-24 00:48:18,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:48:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599729180] [2024-11-24 00:48:18,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599729180] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:48:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923374602] [2024-11-24 00:48:18,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:48:18,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:48:18,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:48:18,430 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:48:18,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff15508-fe07-4a6a-8136-26a2b8fd5b08/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-24 00:48:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:48:18,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-24 00:48:18,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:48:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 37 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:48:21,629 INFO L312 TraceCheckSpWp]: Computing backward predicates...