./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX --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 64bit --witnessprinter.graph.data.programhash c13079d4927c37ef7c4e12e861d352aca7538cf90caea314288bdceb904b4d72 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:07:24,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:07:24,806 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 16:07:24,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:07:24,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:07:24,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:07:24,841 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:07:24,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:07:24,842 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:07:24,843 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:07:24,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:07:24,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:07:24,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:07:24,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:07:24,845 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:07:24,845 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:07:24,846 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:07:24,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:07:24,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:07:24,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:07:24,847 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:07:24,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:07:24,848 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:07:24,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:07:24,849 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:07:24,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:07:24,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:07:24,850 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:07:24,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:07:24,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:07:24,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:07:24,852 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:07:24,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:07:24,852 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:07:24,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:07:24,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:07:24,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:07:24,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:07:24,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:07:24,854 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c13079d4927c37ef7c4e12e861d352aca7538cf90caea314288bdceb904b4d72 [2024-11-08 16:07:25,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:07:25,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:07:25,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:07:25,147 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:07:25,147 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:07:25,149 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c Unable to find full path for "g++" [2024-11-08 16:07:27,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:07:27,342 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:07:27,346 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2024-11-08 16:07:27,366 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/data/25eb49ac4/946ed9452a9540af9e88a0546c82a6bd/FLAG315fc65ea [2024-11-08 16:07:27,381 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/data/25eb49ac4/946ed9452a9540af9e88a0546c82a6bd [2024-11-08 16:07:27,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:07:27,385 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:07:27,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:07:27,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:07:27,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:07:27,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:07:27" (1/1) ... [2024-11-08 16:07:27,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aecdd66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:27, skipping insertion in model container [2024-11-08 16:07:27,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:07:27" (1/1) ... [2024-11-08 16:07:27,454 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:07:27,639 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_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1258,1271] [2024-11-08 16:07:27,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:07:27,922 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:07:27,934 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_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_vMiim_p1.c[1258,1271] [2024-11-08 16:07:28,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:07:28,063 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:07:28,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28 WrapperNode [2024-11-08 16:07:28,064 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:07:28,065 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:07:28,065 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:07:28,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:07:28,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,332 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1477 [2024-11-08 16:07:28,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:07:28,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:07:28,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:07:28,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:07:28,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,556 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]. [2024-11-08 16:07:28,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,638 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:07:28,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:07:28,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:07:28,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:07:28,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (1/1) ... [2024-11-08 16:07:28,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:07:28,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:07:28,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:07:28,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:07:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:07:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:07:28,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:07:28,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:07:29,094 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:07:29,097 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:07:30,903 INFO L? ?]: Removed 723 outVars from TransFormulas that were not future-live. [2024-11-08 16:07:30,904 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:07:30,928 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:07:30,928 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 16:07:30,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:07:30 BoogieIcfgContainer [2024-11-08 16:07:30,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:07:30,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:07:30,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:07:30,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:07:30,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:07:27" (1/3) ... [2024-11-08 16:07:30,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525d3ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:07:30, skipping insertion in model container [2024-11-08 16:07:30,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:07:28" (2/3) ... [2024-11-08 16:07:30,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525d3ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:07:30, skipping insertion in model container [2024-11-08 16:07:30,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:07:30" (3/3) ... [2024-11-08 16:07:30,937 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_vMiim_p1.c [2024-11-08 16:07:30,955 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:07:30,955 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:07:31,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:07:31,038 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;@5e763152, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:07:31,038 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:07:31,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 345 states have (on average 1.4985507246376812) internal successors, (517), 346 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 16:07:31,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:31,060 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:31,060 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:31,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1992277632, now seen corresponding path program 1 times [2024-11-08 16:07:31,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:31,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95537632] [2024-11-08 16:07:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:31,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:32,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:32,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95537632] [2024-11-08 16:07:32,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95537632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:32,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:32,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:07:32,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328201085] [2024-11-08 16:07:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:32,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:07:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:32,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:07:32,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:07:32,232 INFO L87 Difference]: Start difference. First operand has 347 states, 345 states have (on average 1.4985507246376812) internal successors, (517), 346 states have internal predecessors, (517), 0 states have call successors, (0), 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 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:32,355 INFO L93 Difference]: Finished difference Result 566 states and 846 transitions. [2024-11-08 16:07:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:07:32,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-08 16:07:32,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:32,380 INFO L225 Difference]: With dead ends: 566 [2024-11-08 16:07:32,381 INFO L226 Difference]: Without dead ends: 345 [2024-11-08 16:07:32,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:07:32,390 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 0 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:32,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-08 16:07:32,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2024-11-08 16:07:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.4912790697674418) internal successors, (513), 344 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 513 transitions. [2024-11-08 16:07:32,459 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 513 transitions. Word has length 85 [2024-11-08 16:07:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:32,460 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 513 transitions. [2024-11-08 16:07:32,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 513 transitions. [2024-11-08 16:07:32,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-08 16:07:32,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:32,463 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:32,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:07:32,464 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:32,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1629368771, now seen corresponding path program 1 times [2024-11-08 16:07:32,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:32,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801102150] [2024-11-08 16:07:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:32,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:32,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:32,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801102150] [2024-11-08 16:07:32,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801102150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:32,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:32,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:07:32,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555004560] [2024-11-08 16:07:32,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:32,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:07:32,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:32,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:07:32,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:07:32,820 INFO L87 Difference]: Start difference. First operand 345 states and 513 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:32,888 INFO L93 Difference]: Finished difference Result 566 states and 841 transitions. [2024-11-08 16:07:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:07:32,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-11-08 16:07:32,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:32,891 INFO L225 Difference]: With dead ends: 566 [2024-11-08 16:07:32,892 INFO L226 Difference]: Without dead ends: 347 [2024-11-08 16:07:32,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:07:32,894 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 0 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:32,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1517 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-08 16:07:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2024-11-08 16:07:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.4884393063583814) internal successors, (515), 346 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 515 transitions. [2024-11-08 16:07:32,910 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 515 transitions. Word has length 86 [2024-11-08 16:07:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:32,910 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 515 transitions. [2024-11-08 16:07:32,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 515 transitions. [2024-11-08 16:07:32,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-08 16:07:32,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:32,916 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:32,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:07:32,917 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:32,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:32,918 INFO L85 PathProgramCache]: Analyzing trace with hash -68789767, now seen corresponding path program 1 times [2024-11-08 16:07:32,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:32,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065106407] [2024-11-08 16:07:32,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:32,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:33,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:33,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065106407] [2024-11-08 16:07:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065106407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:33,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:33,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 16:07:33,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497094725] [2024-11-08 16:07:33,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:33,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:07:33,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:33,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:07:33,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:07:33,957 INFO L87 Difference]: Start difference. First operand 347 states and 515 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:34,248 INFO L93 Difference]: Finished difference Result 595 states and 883 transitions. [2024-11-08 16:07:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:07:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-11-08 16:07:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:34,251 INFO L225 Difference]: With dead ends: 595 [2024-11-08 16:07:34,252 INFO L226 Difference]: Without dead ends: 374 [2024-11-08 16:07:34,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:07:34,254 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 512 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:34,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2951 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:07:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-08 16:07:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 373. [2024-11-08 16:07:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.4838709677419355) internal successors, (552), 372 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 552 transitions. [2024-11-08 16:07:34,290 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 552 transitions. Word has length 87 [2024-11-08 16:07:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:34,291 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 552 transitions. [2024-11-08 16:07:34,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 552 transitions. [2024-11-08 16:07:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-08 16:07:34,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:34,293 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:34,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:07:34,294 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:34,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:34,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1223595452, now seen corresponding path program 1 times [2024-11-08 16:07:34,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:34,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147696867] [2024-11-08 16:07:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:34,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:34,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:34,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147696867] [2024-11-08 16:07:34,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147696867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:34,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:34,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 16:07:34,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560369716] [2024-11-08 16:07:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:34,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:07:34,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:07:34,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:07:34,753 INFO L87 Difference]: Start difference. First operand 373 states and 552 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:34,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:34,990 INFO L93 Difference]: Finished difference Result 600 states and 888 transitions. [2024-11-08 16:07:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:07:34,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2024-11-08 16:07:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:34,992 INFO L225 Difference]: With dead ends: 600 [2024-11-08 16:07:34,992 INFO L226 Difference]: Without dead ends: 379 [2024-11-08 16:07:34,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:07:34,997 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 513 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:34,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 2950 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:07:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-08 16:07:35,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 378. [2024-11-08 16:07:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.4827586206896552) internal successors, (559), 377 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 559 transitions. [2024-11-08 16:07:35,020 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 559 transitions. Word has length 88 [2024-11-08 16:07:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:35,021 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 559 transitions. [2024-11-08 16:07:35,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 559 transitions. [2024-11-08 16:07:35,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:07:35,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:35,030 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:35,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:07:35,031 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:35,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1445423432, now seen corresponding path program 1 times [2024-11-08 16:07:35,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:35,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882505277] [2024-11-08 16:07:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:35,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:35,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:35,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882505277] [2024-11-08 16:07:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882505277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:35,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:35,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:07:35,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550637216] [2024-11-08 16:07:35,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:35,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:07:35,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:35,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:07:35,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:07:35,405 INFO L87 Difference]: Start difference. First operand 378 states and 559 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:35,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:35,621 INFO L93 Difference]: Finished difference Result 802 states and 1183 transitions. [2024-11-08 16:07:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:07:35,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2024-11-08 16:07:35,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:35,624 INFO L225 Difference]: With dead ends: 802 [2024-11-08 16:07:35,624 INFO L226 Difference]: Without dead ends: 569 [2024-11-08 16:07:35,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:07:35,626 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 1070 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:35,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 2456 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-08 16:07:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 379. [2024-11-08 16:07:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.4788359788359788) internal successors, (559), 378 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 559 transitions. [2024-11-08 16:07:35,637 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 559 transitions. Word has length 90 [2024-11-08 16:07:35,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:35,638 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 559 transitions. [2024-11-08 16:07:35,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 559 transitions. [2024-11-08 16:07:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 16:07:35,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:35,640 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:35,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:07:35,640 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:35,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:35,641 INFO L85 PathProgramCache]: Analyzing trace with hash 187371151, now seen corresponding path program 1 times [2024-11-08 16:07:35,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:35,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97005817] [2024-11-08 16:07:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:35,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:35,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:35,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97005817] [2024-11-08 16:07:35,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97005817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:35,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:35,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:07:35,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204070018] [2024-11-08 16:07:35,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:35,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:07:35,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:35,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:07:35,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:07:35,992 INFO L87 Difference]: Start difference. First operand 379 states and 559 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:36,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:36,185 INFO L93 Difference]: Finished difference Result 652 states and 955 transitions. [2024-11-08 16:07:36,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:07:36,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-11-08 16:07:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:36,187 INFO L225 Difference]: With dead ends: 652 [2024-11-08 16:07:36,187 INFO L226 Difference]: Without dead ends: 414 [2024-11-08 16:07:36,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:07:36,191 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 600 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:36,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 2471 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-08 16:07:36,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 380. [2024-11-08 16:07:36,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.474934036939314) internal successors, (559), 379 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:36,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 559 transitions. [2024-11-08 16:07:36,206 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 559 transitions. Word has length 91 [2024-11-08 16:07:36,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:36,207 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 559 transitions. [2024-11-08 16:07:36,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:36,211 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 559 transitions. [2024-11-08 16:07:36,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 16:07:36,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:36,213 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:36,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:07:36,213 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:36,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:36,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1367901713, now seen corresponding path program 1 times [2024-11-08 16:07:36,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:36,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339668262] [2024-11-08 16:07:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:36,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:36,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:36,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339668262] [2024-11-08 16:07:36,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339668262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:36,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:36,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:07:36,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215779357] [2024-11-08 16:07:36,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:36,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:07:36,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:36,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:07:36,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:07:36,695 INFO L87 Difference]: Start difference. First operand 380 states and 559 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:36,896 INFO L93 Difference]: Finished difference Result 682 states and 997 transitions. [2024-11-08 16:07:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:07:36,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 16:07:36,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:36,899 INFO L225 Difference]: With dead ends: 682 [2024-11-08 16:07:36,899 INFO L226 Difference]: Without dead ends: 439 [2024-11-08 16:07:36,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:07:36,900 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 670 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:36,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 2466 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-08 16:07:36,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 381. [2024-11-08 16:07:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.4710526315789474) internal successors, (559), 380 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:36,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 559 transitions. [2024-11-08 16:07:36,911 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 559 transitions. Word has length 92 [2024-11-08 16:07:36,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:36,911 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 559 transitions. [2024-11-08 16:07:36,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 559 transitions. [2024-11-08 16:07:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 16:07:36,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:36,913 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:36,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:07:36,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:36,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 438970728, now seen corresponding path program 1 times [2024-11-08 16:07:36,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:36,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814544558] [2024-11-08 16:07:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:36,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:37,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:37,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814544558] [2024-11-08 16:07:37,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814544558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:37,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:37,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:07:37,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977086634] [2024-11-08 16:07:37,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:37,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:07:37,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:37,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:07:37,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:07:37,345 INFO L87 Difference]: Start difference. First operand 381 states and 559 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:37,571 INFO L93 Difference]: Finished difference Result 824 states and 1207 transitions. [2024-11-08 16:07:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:07:37,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-11-08 16:07:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:37,574 INFO L225 Difference]: With dead ends: 824 [2024-11-08 16:07:37,574 INFO L226 Difference]: Without dead ends: 576 [2024-11-08 16:07:37,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:07:37,576 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 1076 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:37,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 2471 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2024-11-08 16:07:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 382. [2024-11-08 16:07:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.4671916010498687) internal successors, (559), 381 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 559 transitions. [2024-11-08 16:07:37,590 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 559 transitions. Word has length 93 [2024-11-08 16:07:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:37,591 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 559 transitions. [2024-11-08 16:07:37,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 559 transitions. [2024-11-08 16:07:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 16:07:37,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:37,593 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:37,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:07:37,594 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:37,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:37,594 INFO L85 PathProgramCache]: Analyzing trace with hash 221749142, now seen corresponding path program 1 times [2024-11-08 16:07:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569481942] [2024-11-08 16:07:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:37,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:37,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569481942] [2024-11-08 16:07:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569481942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:37,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:07:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184613591] [2024-11-08 16:07:37,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:37,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:07:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:07:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:37,881 INFO L87 Difference]: Start difference. First operand 382 states and 559 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:37,994 INFO L93 Difference]: Finished difference Result 795 states and 1166 transitions. [2024-11-08 16:07:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:07:37,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2024-11-08 16:07:37,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:37,997 INFO L225 Difference]: With dead ends: 795 [2024-11-08 16:07:37,998 INFO L226 Difference]: Without dead ends: 547 [2024-11-08 16:07:37,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:07:37,999 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 1025 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:37,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1494 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:07:38,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-11-08 16:07:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 366. [2024-11-08 16:07:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 1.4684931506849315) internal successors, (536), 365 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:38,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 536 transitions. [2024-11-08 16:07:38,010 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 536 transitions. Word has length 94 [2024-11-08 16:07:38,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:38,010 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 536 transitions. [2024-11-08 16:07:38,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 536 transitions. [2024-11-08 16:07:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-08 16:07:38,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:38,013 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:38,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:07:38,014 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:38,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:38,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1477928881, now seen corresponding path program 1 times [2024-11-08 16:07:38,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:38,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285930684] [2024-11-08 16:07:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:38,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:38,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:38,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285930684] [2024-11-08 16:07:38,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285930684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:07:38,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392671550] [2024-11-08 16:07:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:38,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:07:38,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:07:38,832 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:07:38,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:07:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:39,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:07:39,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:07:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:40,102 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:07:40,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392671550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:40,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:07:40,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-08 16:07:40,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655036668] [2024-11-08 16:07:40,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:40,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:07:40,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:40,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:07:40,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:07:40,105 INFO L87 Difference]: Start difference. First operand 366 states and 536 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:40,609 INFO L93 Difference]: Finished difference Result 586 states and 862 transitions. [2024-11-08 16:07:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:07:40,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2024-11-08 16:07:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:40,611 INFO L225 Difference]: With dead ends: 586 [2024-11-08 16:07:40,612 INFO L226 Difference]: Without dead ends: 365 [2024-11-08 16:07:40,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:07:40,613 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 388 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:40,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 601 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:07:40,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-08 16:07:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2024-11-08 16:07:40,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.4642857142857142) internal successors, (533), 364 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 533 transitions. [2024-11-08 16:07:40,625 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 533 transitions. Word has length 197 [2024-11-08 16:07:40,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:40,625 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 533 transitions. [2024-11-08 16:07:40,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:40,625 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 533 transitions. [2024-11-08 16:07:40,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-08 16:07:40,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:40,630 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:40,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:07:40,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:07:40,831 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:40,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:40,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1633498503, now seen corresponding path program 1 times [2024-11-08 16:07:40,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:40,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88363251] [2024-11-08 16:07:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:40,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:42,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:42,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88363251] [2024-11-08 16:07:42,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88363251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:42,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:42,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:07:42,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352646319] [2024-11-08 16:07:42,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:42,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:07:42,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:42,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:07:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:42,334 INFO L87 Difference]: Start difference. First operand 365 states and 533 transitions. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:42,797 INFO L93 Difference]: Finished difference Result 705 states and 1032 transitions. [2024-11-08 16:07:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:07:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 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 198 [2024-11-08 16:07:42,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:42,800 INFO L225 Difference]: With dead ends: 705 [2024-11-08 16:07:42,800 INFO L226 Difference]: Without dead ends: 477 [2024-11-08 16:07:42,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:07:42,801 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 787 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:42,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1770 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:07:42,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-08 16:07:42,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 431. [2024-11-08 16:07:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.4627906976744185) internal successors, (629), 430 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:42,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 629 transitions. [2024-11-08 16:07:42,816 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 629 transitions. Word has length 198 [2024-11-08 16:07:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:42,816 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 629 transitions. [2024-11-08 16:07:42,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:42,817 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 629 transitions. [2024-11-08 16:07:42,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-08 16:07:42,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:42,819 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:42,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:07:42,820 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:42,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1861570268, now seen corresponding path program 1 times [2024-11-08 16:07:42,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:42,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274859191] [2024-11-08 16:07:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:44,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:44,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274859191] [2024-11-08 16:07:44,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274859191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:44,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:44,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:07:44,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684019435] [2024-11-08 16:07:44,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:44,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:07:44,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:44,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:07:44,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:44,649 INFO L87 Difference]: Start difference. First operand 431 states and 629 transitions. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:45,349 INFO L93 Difference]: Finished difference Result 697 states and 1020 transitions. [2024-11-08 16:07:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:07:45,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2024-11-08 16:07:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:45,352 INFO L225 Difference]: With dead ends: 697 [2024-11-08 16:07:45,352 INFO L226 Difference]: Without dead ends: 477 [2024-11-08 16:07:45,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:07:45,353 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 760 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:45,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 882 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:07:45,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-08 16:07:45,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 432. [2024-11-08 16:07:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 1.4617169373549883) internal successors, (630), 431 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 630 transitions. [2024-11-08 16:07:45,363 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 630 transitions. Word has length 199 [2024-11-08 16:07:45,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:45,363 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 630 transitions. [2024-11-08 16:07:45,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 630 transitions. [2024-11-08 16:07:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-08 16:07:45,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:45,366 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:45,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:07:45,366 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:45,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:45,367 INFO L85 PathProgramCache]: Analyzing trace with hash -484382844, now seen corresponding path program 1 times [2024-11-08 16:07:45,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:45,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041849042] [2024-11-08 16:07:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:45,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:46,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:46,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041849042] [2024-11-08 16:07:46,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041849042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:46,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:46,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:07:46,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405845289] [2024-11-08 16:07:46,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:46,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:07:46,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:46,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:07:46,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:46,646 INFO L87 Difference]: Start difference. First operand 432 states and 630 transitions. Second operand has 6 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:47,183 INFO L93 Difference]: Finished difference Result 835 states and 1216 transitions. [2024-11-08 16:07:47,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:07:47,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2024-11-08 16:07:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:47,186 INFO L225 Difference]: With dead ends: 835 [2024-11-08 16:07:47,186 INFO L226 Difference]: Without dead ends: 615 [2024-11-08 16:07:47,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:07:47,188 INFO L432 NwaCegarLoop]: 535 mSDtfsCounter, 1110 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:47,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1471 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:07:47,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-08 16:07:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 542. [2024-11-08 16:07:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 1.4639556377079483) internal successors, (792), 541 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 792 transitions. [2024-11-08 16:07:47,201 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 792 transitions. Word has length 200 [2024-11-08 16:07:47,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:47,202 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 792 transitions. [2024-11-08 16:07:47,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 792 transitions. [2024-11-08 16:07:47,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-08 16:07:47,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:47,205 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:47,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:07:47,205 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:47,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:47,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1832967489, now seen corresponding path program 1 times [2024-11-08 16:07:47,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:47,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5001220] [2024-11-08 16:07:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:47,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:48,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:48,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5001220] [2024-11-08 16:07:48,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5001220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:48,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:48,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:07:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384156277] [2024-11-08 16:07:48,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:48,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:07:48,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:07:48,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:48,762 INFO L87 Difference]: Start difference. First operand 542 states and 792 transitions. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:49,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:49,456 INFO L93 Difference]: Finished difference Result 764 states and 1119 transitions. [2024-11-08 16:07:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:07:49,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 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 201 [2024-11-08 16:07:49,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:49,459 INFO L225 Difference]: With dead ends: 764 [2024-11-08 16:07:49,459 INFO L226 Difference]: Without dead ends: 544 [2024-11-08 16:07:49,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:07:49,460 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 896 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:49,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 875 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:07:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-08 16:07:49,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 543. [2024-11-08 16:07:49,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 1.46309963099631) internal successors, (793), 542 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 793 transitions. [2024-11-08 16:07:49,473 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 793 transitions. Word has length 201 [2024-11-08 16:07:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:49,474 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 793 transitions. [2024-11-08 16:07:49,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 793 transitions. [2024-11-08 16:07:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-08 16:07:49,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:49,477 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:49,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:07:49,477 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:49,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1280276953, now seen corresponding path program 1 times [2024-11-08 16:07:49,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:49,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970411130] [2024-11-08 16:07:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:52,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:52,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970411130] [2024-11-08 16:07:52,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970411130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:52,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:52,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:07:52,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182353157] [2024-11-08 16:07:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:52,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:07:52,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:52,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:07:52,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:07:52,701 INFO L87 Difference]: Start difference. First operand 543 states and 793 transitions. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:52,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:52,773 INFO L93 Difference]: Finished difference Result 854 states and 1252 transitions. [2024-11-08 16:07:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:07:52,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2024-11-08 16:07:52,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:52,776 INFO L225 Difference]: With dead ends: 854 [2024-11-08 16:07:52,776 INFO L226 Difference]: Without dead ends: 547 [2024-11-08 16:07:52,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:07:52,779 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 382 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:52,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1501 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:07:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-11-08 16:07:52,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2024-11-08 16:07:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.4597069597069596) internal successors, (797), 546 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 797 transitions. [2024-11-08 16:07:52,792 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 797 transitions. Word has length 202 [2024-11-08 16:07:52,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:52,793 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 797 transitions. [2024-11-08 16:07:52,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 797 transitions. [2024-11-08 16:07:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-08 16:07:52,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:52,796 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:52,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:07:52,797 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:52,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:52,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1072837878, now seen corresponding path program 1 times [2024-11-08 16:07:52,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:52,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119041072] [2024-11-08 16:07:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:52,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:07:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:07:57,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:07:57,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119041072] [2024-11-08 16:07:57,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119041072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:07:57,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:07:57,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 16:07:57,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236416222] [2024-11-08 16:07:57,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:07:57,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 16:07:57,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:07:57,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 16:07:57,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:07:57,705 INFO L87 Difference]: Start difference. First operand 547 states and 797 transitions. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:58,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:07:58,157 INFO L93 Difference]: Finished difference Result 1036 states and 1503 transitions. [2024-11-08 16:07:58,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:07:58,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2024-11-08 16:07:58,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:07:58,161 INFO L225 Difference]: With dead ends: 1036 [2024-11-08 16:07:58,161 INFO L226 Difference]: Without dead ends: 735 [2024-11-08 16:07:58,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:07:58,162 INFO L432 NwaCegarLoop]: 475 mSDtfsCounter, 1541 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:07:58,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 2644 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:07:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-08 16:07:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 659. [2024-11-08 16:07:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.4437689969604863) internal successors, (950), 658 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 950 transitions. [2024-11-08 16:07:58,178 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 950 transitions. Word has length 203 [2024-11-08 16:07:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:07:58,178 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 950 transitions. [2024-11-08 16:07:58,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:07:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 950 transitions. [2024-11-08 16:07:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-08 16:07:58,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:07:58,182 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:07:58,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 16:07:58,182 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:07:58,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:07:58,183 INFO L85 PathProgramCache]: Analyzing trace with hash 459034261, now seen corresponding path program 1 times [2024-11-08 16:07:58,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:07:58,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882087146] [2024-11-08 16:07:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:07:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:07:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:01,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:01,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882087146] [2024-11-08 16:08:01,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882087146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:08:01,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678081989] [2024-11-08 16:08:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:01,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:08:01,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:08:01,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:08:01,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:08:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:02,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 16:08:02,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:08:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:02,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:08:02,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678081989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:02,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:08:02,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2024-11-08 16:08:02,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036538884] [2024-11-08 16:08:02,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:02,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:08:02,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:02,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:08:02,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:08:02,830 INFO L87 Difference]: Start difference. First operand 659 states and 950 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:03,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:03,581 INFO L93 Difference]: Finished difference Result 1037 states and 1504 transitions. [2024-11-08 16:08:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:08:03,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2024-11-08 16:08:03,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:03,584 INFO L225 Difference]: With dead ends: 1037 [2024-11-08 16:08:03,584 INFO L226 Difference]: Without dead ends: 584 [2024-11-08 16:08:03,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:08:03,587 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 731 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:03,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 876 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:08:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-08 16:08:03,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 547. [2024-11-08 16:08:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.456043956043956) internal successors, (795), 546 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 795 transitions. [2024-11-08 16:08:03,606 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 795 transitions. Word has length 204 [2024-11-08 16:08:03,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:03,606 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 795 transitions. [2024-11-08 16:08:03,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:03,607 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 795 transitions. [2024-11-08 16:08:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-08 16:08:03,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:03,610 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:08:03,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 16:08:03,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 16:08:03,811 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:03,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:03,812 INFO L85 PathProgramCache]: Analyzing trace with hash -447142579, now seen corresponding path program 1 times [2024-11-08 16:08:03,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:03,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683443645] [2024-11-08 16:08:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:03,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:07,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:07,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683443645] [2024-11-08 16:08:07,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683443645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:07,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:08:07,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:08:07,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801920553] [2024-11-08 16:08:07,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:07,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:08:07,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:08:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:08:07,034 INFO L87 Difference]: Start difference. First operand 547 states and 795 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:07,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:07,099 INFO L93 Difference]: Finished difference Result 860 states and 1256 transitions. [2024-11-08 16:08:07,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:08:07,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2024-11-08 16:08:07,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:07,102 INFO L225 Difference]: With dead ends: 860 [2024-11-08 16:08:07,102 INFO L226 Difference]: Without dead ends: 551 [2024-11-08 16:08:07,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:08:07,104 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 381 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:07,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1501 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:08:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-08 16:08:07,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2024-11-08 16:08:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.4543795620437956) internal successors, (797), 548 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:07,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 797 transitions. [2024-11-08 16:08:07,117 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 797 transitions. Word has length 205 [2024-11-08 16:08:07,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:07,118 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 797 transitions. [2024-11-08 16:08:07,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:07,118 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 797 transitions. [2024-11-08 16:08:07,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-08 16:08:07,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:07,121 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:08:07,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 16:08:07,121 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:07,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:07,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1001360358, now seen corresponding path program 1 times [2024-11-08 16:08:07,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:07,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150540408] [2024-11-08 16:08:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:07,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:10,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:10,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150540408] [2024-11-08 16:08:10,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150540408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:10,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:08:10,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-08 16:08:10,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689907553] [2024-11-08 16:08:10,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:10,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 16:08:10,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 16:08:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:08:10,965 INFO L87 Difference]: Start difference. First operand 549 states and 797 transitions. Second operand has 13 states, 13 states have (on average 15.76923076923077) internal successors, (205), 13 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:11,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:11,471 INFO L93 Difference]: Finished difference Result 1376 states and 1998 transitions. [2024-11-08 16:08:11,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:08:11,472 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.76923076923077) internal successors, (205), 13 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2024-11-08 16:08:11,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:11,476 INFO L225 Difference]: With dead ends: 1376 [2024-11-08 16:08:11,476 INFO L226 Difference]: Without dead ends: 1069 [2024-11-08 16:08:11,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:08:11,478 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 1123 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3658 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:11,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 3658 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:08:11,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2024-11-08 16:08:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 786. [2024-11-08 16:08:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 1.440764331210191) internal successors, (1131), 785 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1131 transitions. [2024-11-08 16:08:11,503 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1131 transitions. Word has length 205 [2024-11-08 16:08:11,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:11,504 INFO L471 AbstractCegarLoop]: Abstraction has 786 states and 1131 transitions. [2024-11-08 16:08:11,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.76923076923077) internal successors, (205), 13 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1131 transitions. [2024-11-08 16:08:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-08 16:08:11,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:11,509 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:08:11,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 16:08:11,509 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:11,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:11,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1828465255, now seen corresponding path program 1 times [2024-11-08 16:08:11,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:11,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947797813] [2024-11-08 16:08:11,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:11,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:14,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:14,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947797813] [2024-11-08 16:08:14,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947797813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:08:14,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629293424] [2024-11-08 16:08:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:14,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:08:14,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:08:14,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:08:14,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:08:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:15,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 1444 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-08 16:08:15,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:08:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:17,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:08:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:23,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629293424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:08:23,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:08:23,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 19] total 43 [2024-11-08 16:08:23,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266262745] [2024-11-08 16:08:23,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:08:23,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-08 16:08:23,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:23,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-08 16:08:23,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1612, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 16:08:23,192 INFO L87 Difference]: Start difference. First operand 786 states and 1131 transitions. Second operand has 43 states, 43 states have (on average 14.093023255813954) internal successors, (606), 43 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:33,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:33,202 INFO L93 Difference]: Finished difference Result 2232 states and 3249 transitions. [2024-11-08 16:08:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-08 16:08:33,203 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 14.093023255813954) internal successors, (606), 43 states have internal predecessors, (606), 0 states have call successors, (0), 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 206 [2024-11-08 16:08:33,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:33,210 INFO L225 Difference]: With dead ends: 2232 [2024-11-08 16:08:33,210 INFO L226 Difference]: Without dead ends: 1881 [2024-11-08 16:08:33,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4931 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1643, Invalid=13119, Unknown=0, NotChecked=0, Total=14762 [2024-11-08 16:08:33,216 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 5719 mSDsluCounter, 7381 mSDsCounter, 0 mSdLazyCounter, 5757 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5719 SdHoareTripleChecker+Valid, 7670 SdHoareTripleChecker+Invalid, 5796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 5757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:33,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5719 Valid, 7670 Invalid, 5796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 5757 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-08 16:08:33,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2024-11-08 16:08:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1480. [2024-11-08 16:08:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 1.4503042596348885) internal successors, (2145), 1479 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2145 transitions. [2024-11-08 16:08:33,271 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2145 transitions. Word has length 206 [2024-11-08 16:08:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:33,272 INFO L471 AbstractCegarLoop]: Abstraction has 1480 states and 2145 transitions. [2024-11-08 16:08:33,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 14.093023255813954) internal successors, (606), 43 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2145 transitions. [2024-11-08 16:08:33,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-08 16:08:33,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:33,276 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:08:33,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:08:33,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:08:33,477 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:33,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:33,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2086463208, now seen corresponding path program 1 times [2024-11-08 16:08:33,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:33,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326232830] [2024-11-08 16:08:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:34,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326232830] [2024-11-08 16:08:34,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326232830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:08:34,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:08:34,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 16:08:34,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602578553] [2024-11-08 16:08:34,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:08:34,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:08:34,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:34,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:08:34,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:08:34,877 INFO L87 Difference]: Start difference. First operand 1480 states and 2145 transitions. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:35,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:08:35,109 INFO L93 Difference]: Finished difference Result 3128 states and 4557 transitions. [2024-11-08 16:08:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:08:35,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 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 208 [2024-11-08 16:08:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:08:35,117 INFO L225 Difference]: With dead ends: 3128 [2024-11-08 16:08:35,117 INFO L226 Difference]: Without dead ends: 2320 [2024-11-08 16:08:35,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:08:35,119 INFO L432 NwaCegarLoop]: 917 mSDtfsCounter, 1079 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:08:35,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 3508 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:08:35,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2024-11-08 16:08:35,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1790. [2024-11-08 16:08:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1790 states, 1789 states have (on average 1.4460592509782002) internal successors, (2587), 1789 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1790 states to 1790 states and 2587 transitions. [2024-11-08 16:08:35,163 INFO L78 Accepts]: Start accepts. Automaton has 1790 states and 2587 transitions. Word has length 208 [2024-11-08 16:08:35,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:08:35,163 INFO L471 AbstractCegarLoop]: Abstraction has 1790 states and 2587 transitions. [2024-11-08 16:08:35,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1790 states and 2587 transitions. [2024-11-08 16:08:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-08 16:08:35,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:08:35,168 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:08:35,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 16:08:35,168 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:08:35,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:08:35,169 INFO L85 PathProgramCache]: Analyzing trace with hash 800168474, now seen corresponding path program 1 times [2024-11-08 16:08:35,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:08:35,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369782074] [2024-11-08 16:08:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:35,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:08:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:37,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:08:37,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369782074] [2024-11-08 16:08:37,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369782074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:08:37,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236338606] [2024-11-08 16:08:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:08:37,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:08:37,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:08:37,332 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:08:37,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:08:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:08:38,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-08 16:08:38,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:08:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:40,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:08:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:08:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236338606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:08:44,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:08:44,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 17] total 44 [2024-11-08 16:08:44,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910069818] [2024-11-08 16:08:44,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:08:44,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 16:08:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:08:44,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 16:08:44,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1726, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 16:08:44,384 INFO L87 Difference]: Start difference. First operand 1790 states and 2587 transitions. Second operand has 44 states, 44 states have (on average 13.931818181818182) internal successors, (613), 44 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:08:53,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-08 16:08:58,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-08 16:09:01,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-08 16:09:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:04,006 INFO L93 Difference]: Finished difference Result 3819 states and 5548 transitions. [2024-11-08 16:09:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-08 16:09:04,007 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 13.931818181818182) internal successors, (613), 44 states have internal predecessors, (613), 0 states have call successors, (0), 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 209 [2024-11-08 16:09:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:04,016 INFO L225 Difference]: With dead ends: 3819 [2024-11-08 16:09:04,016 INFO L226 Difference]: Without dead ends: 2855 [2024-11-08 16:09:04,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6632 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1930, Invalid=18950, Unknown=0, NotChecked=0, Total=20880 [2024-11-08 16:09:04,025 INFO L432 NwaCegarLoop]: 511 mSDtfsCounter, 7095 mSDsluCounter, 13368 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7095 SdHoareTripleChecker+Valid, 13879 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:09:04,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7095 Valid, 13879 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1796 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2024-11-08 16:09:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2024-11-08 16:09:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2150. [2024-11-08 16:09:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.4471847370870172) internal successors, (3110), 2149 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3110 transitions. [2024-11-08 16:09:04,075 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3110 transitions. Word has length 209 [2024-11-08 16:09:04,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:09:04,076 INFO L471 AbstractCegarLoop]: Abstraction has 2150 states and 3110 transitions. [2024-11-08 16:09:04,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 13.931818181818182) internal successors, (613), 44 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:04,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3110 transitions. [2024-11-08 16:09:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-08 16:09:04,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:04,079 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:04,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:09:04,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 16:09:04,280 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:09:04,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1133050572, now seen corresponding path program 1 times [2024-11-08 16:09:04,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:04,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826878088] [2024-11-08 16:09:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:04,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:06,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:06,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826878088] [2024-11-08 16:09:06,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826878088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:06,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342981093] [2024-11-08 16:09:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:06,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:06,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:06,517 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:06,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:09:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:07,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 16:09:07,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:08,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:09:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:10,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342981093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:09:10,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:09:10,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 34 [2024-11-08 16:09:10,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100630341] [2024-11-08 16:09:10,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:09:10,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 16:09:10,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:10,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 16:09:10,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 16:09:10,089 INFO L87 Difference]: Start difference. First operand 2150 states and 3110 transitions. Second operand has 34 states, 34 states have (on average 17.823529411764707) internal successors, (606), 34 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:13,310 INFO L93 Difference]: Finished difference Result 3714 states and 5389 transitions. [2024-11-08 16:09:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 16:09:13,311 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 17.823529411764707) internal successors, (606), 34 states have internal predecessors, (606), 0 states have call successors, (0), 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 210 [2024-11-08 16:09:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:13,319 INFO L225 Difference]: With dead ends: 3714 [2024-11-08 16:09:13,319 INFO L226 Difference]: Without dead ends: 2792 [2024-11-08 16:09:13,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=502, Invalid=2804, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 16:09:13,322 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 6281 mSDsluCounter, 6687 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6281 SdHoareTripleChecker+Valid, 7153 SdHoareTripleChecker+Invalid, 4111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:09:13,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6281 Valid, 7153 Invalid, 4111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 4104 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 16:09:13,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2024-11-08 16:09:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2154. [2024-11-08 16:09:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 2153 states have (on average 1.444960520204366) internal successors, (3111), 2153 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 3111 transitions. [2024-11-08 16:09:13,370 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 3111 transitions. Word has length 210 [2024-11-08 16:09:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:09:13,371 INFO L471 AbstractCegarLoop]: Abstraction has 2154 states and 3111 transitions. [2024-11-08 16:09:13,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 17.823529411764707) internal successors, (606), 34 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 3111 transitions. [2024-11-08 16:09:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-08 16:09:13,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:13,374 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:13,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:09:13,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 16:09:13,575 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:09:13,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1463359996, now seen corresponding path program 1 times [2024-11-08 16:09:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892318292] [2024-11-08 16:09:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:13,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:14,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:14,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892318292] [2024-11-08 16:09:14,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892318292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:14,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:14,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 16:09:14,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793301282] [2024-11-08 16:09:14,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:14,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:09:14,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:14,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:09:14,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:09:14,573 INFO L87 Difference]: Start difference. First operand 2154 states and 3111 transitions. Second operand has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:14,736 INFO L93 Difference]: Finished difference Result 5369 states and 7793 transitions. [2024-11-08 16:09:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:09:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-11-08 16:09:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:14,748 INFO L225 Difference]: With dead ends: 5369 [2024-11-08 16:09:14,748 INFO L226 Difference]: Without dead ends: 3996 [2024-11-08 16:09:14,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:09:14,751 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 215 mSDsluCounter, 3221 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 3769 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:09:14,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 3769 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:09:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3996 states. [2024-11-08 16:09:14,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3996 to 3586. [2024-11-08 16:09:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 1.4460251046025105) internal successors, (5184), 3585 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:14,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5184 transitions. [2024-11-08 16:09:14,894 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5184 transitions. Word has length 211 [2024-11-08 16:09:14,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:09:14,894 INFO L471 AbstractCegarLoop]: Abstraction has 3586 states and 5184 transitions. [2024-11-08 16:09:14,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.375) internal successors, (211), 8 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5184 transitions. [2024-11-08 16:09:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-08 16:09:14,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:14,898 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:14,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-08 16:09:14,898 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:09:14,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:14,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1726617288, now seen corresponding path program 1 times [2024-11-08 16:09:14,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:14,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246586490] [2024-11-08 16:09:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:14,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:18,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:18,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246586490] [2024-11-08 16:09:18,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246586490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:18,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892664984] [2024-11-08 16:09:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:18,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:18,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:18,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:09:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:19,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-08 16:09:19,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:22,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:09:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:27,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892664984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:09:27,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:09:27,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 23] total 55 [2024-11-08 16:09:27,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074243630] [2024-11-08 16:09:27,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:09:27,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 16:09:27,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:27,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 16:09:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=2659, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 16:09:27,725 INFO L87 Difference]: Start difference. First operand 3586 states and 5184 transitions. Second operand has 55 states, 55 states have (on average 11.0) internal successors, (605), 55 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:35,456 INFO L93 Difference]: Finished difference Result 7394 states and 10728 transitions. [2024-11-08 16:09:35,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 16:09:35,457 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 11.0) internal successors, (605), 55 states have internal predecessors, (605), 0 states have call successors, (0), 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 211 [2024-11-08 16:09:35,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:35,472 INFO L225 Difference]: With dead ends: 7394 [2024-11-08 16:09:35,472 INFO L226 Difference]: Without dead ends: 5528 [2024-11-08 16:09:35,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2496 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1133, Invalid=7609, Unknown=0, NotChecked=0, Total=8742 [2024-11-08 16:09:35,478 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 3394 mSDsluCounter, 9976 mSDsCounter, 0 mSdLazyCounter, 7382 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 10409 SdHoareTripleChecker+Invalid, 7390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:09:35,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 10409 Invalid, 7390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7382 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-08 16:09:35,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5528 states. [2024-11-08 16:09:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5528 to 3992. [2024-11-08 16:09:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3991 states have (on average 1.4442495615134052) internal successors, (5764), 3991 states have internal predecessors, (5764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5764 transitions. [2024-11-08 16:09:35,557 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5764 transitions. Word has length 211 [2024-11-08 16:09:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:09:35,557 INFO L471 AbstractCegarLoop]: Abstraction has 3992 states and 5764 transitions. [2024-11-08 16:09:35,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 11.0) internal successors, (605), 55 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5764 transitions. [2024-11-08 16:09:35,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-08 16:09:35,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:35,562 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:35,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:09:35,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 16:09:35,763 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:09:35,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash -897340502, now seen corresponding path program 1 times [2024-11-08 16:09:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:35,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119081416] [2024-11-08 16:09:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:35,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:36,810 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:36,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119081416] [2024-11-08 16:09:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119081416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:36,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:36,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:09:36,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856317503] [2024-11-08 16:09:36,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:36,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:09:36,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:36,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:09:36,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:09:36,813 INFO L87 Difference]: Start difference. First operand 3992 states and 5764 transitions. Second operand has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:37,004 INFO L93 Difference]: Finished difference Result 6054 states and 8771 transitions. [2024-11-08 16:09:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:09:37,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-11-08 16:09:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:37,015 INFO L225 Difference]: With dead ends: 6054 [2024-11-08 16:09:37,015 INFO L226 Difference]: Without dead ends: 4184 [2024-11-08 16:09:37,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:09:37,019 INFO L432 NwaCegarLoop]: 781 mSDtfsCounter, 922 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:09:37,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2813 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:09:37,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2024-11-08 16:09:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 3970. [2024-11-08 16:09:37,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3969 states have (on average 1.4436885865457294) internal successors, (5730), 3969 states have internal predecessors, (5730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 5730 transitions. [2024-11-08 16:09:37,103 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 5730 transitions. Word has length 211 [2024-11-08 16:09:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:09:37,104 INFO L471 AbstractCegarLoop]: Abstraction has 3970 states and 5730 transitions. [2024-11-08 16:09:37,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 5730 transitions. [2024-11-08 16:09:37,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-08 16:09:37,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:37,109 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:37,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-08 16:09:37,110 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:09:37,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash 26898812, now seen corresponding path program 1 times [2024-11-08 16:09:37,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:37,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142824595] [2024-11-08 16:09:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:37,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:38,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:38,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142824595] [2024-11-08 16:09:38,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142824595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:38,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:38,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:09:38,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999353165] [2024-11-08 16:09:38,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:38,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:09:38,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:38,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:09:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:09:38,077 INFO L87 Difference]: Start difference. First operand 3970 states and 5730 transitions. Second operand has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:38,268 INFO L93 Difference]: Finished difference Result 5984 states and 8671 transitions. [2024-11-08 16:09:38,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:09:38,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-11-08 16:09:38,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:38,275 INFO L225 Difference]: With dead ends: 5984 [2024-11-08 16:09:38,275 INFO L226 Difference]: Without dead ends: 4142 [2024-11-08 16:09:38,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:09:38,278 INFO L432 NwaCegarLoop]: 781 mSDtfsCounter, 683 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:09:38,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 3284 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:09:38,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2024-11-08 16:09:38,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3976. [2024-11-08 16:09:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3976 states, 3975 states have (on average 1.4420125786163522) internal successors, (5732), 3975 states have internal predecessors, (5732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3976 states to 3976 states and 5732 transitions. [2024-11-08 16:09:38,340 INFO L78 Accepts]: Start accepts. Automaton has 3976 states and 5732 transitions. Word has length 211 [2024-11-08 16:09:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:09:38,341 INFO L471 AbstractCegarLoop]: Abstraction has 3976 states and 5732 transitions. [2024-11-08 16:09:38,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.142857142857142) internal successors, (211), 7 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3976 states and 5732 transitions. [2024-11-08 16:09:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-08 16:09:38,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:38,345 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:38,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-08 16:09:38,346 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:09:38,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:38,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1886772667, now seen corresponding path program 1 times [2024-11-08 16:09:38,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:38,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280789046] [2024-11-08 16:09:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:38,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:40,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:40,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280789046] [2024-11-08 16:09:40,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280789046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:40,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:40,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:09:40,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680333951] [2024-11-08 16:09:40,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:40,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:09:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:40,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:09:40,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:09:40,722 INFO L87 Difference]: Start difference. First operand 3976 states and 5732 transitions. Second operand has 10 states, 10 states have (on average 21.1) internal successors, (211), 10 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:40,917 INFO L93 Difference]: Finished difference Result 6891 states and 9963 transitions. [2024-11-08 16:09:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 16:09:40,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.1) internal successors, (211), 10 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-11-08 16:09:40,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:40,925 INFO L225 Difference]: With dead ends: 6891 [2024-11-08 16:09:40,925 INFO L226 Difference]: Without dead ends: 4752 [2024-11-08 16:09:40,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-08 16:09:40,928 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 580 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:09:40,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 2967 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:09:40,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2024-11-08 16:09:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 3780. [2024-11-08 16:09:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3779 states have (on average 1.4453559142630326) internal successors, (5462), 3779 states have internal predecessors, (5462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 5462 transitions. [2024-11-08 16:09:40,992 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 5462 transitions. Word has length 211 [2024-11-08 16:09:40,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:09:40,992 INFO L471 AbstractCegarLoop]: Abstraction has 3780 states and 5462 transitions. [2024-11-08 16:09:40,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.1) internal successors, (211), 10 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:40,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 5462 transitions. [2024-11-08 16:09:40,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-08 16:09:40,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:09:40,996 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:40,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-08 16:09:40,997 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:09:40,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:40,997 INFO L85 PathProgramCache]: Analyzing trace with hash -702538696, now seen corresponding path program 1 times [2024-11-08 16:09:40,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:40,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354545672] [2024-11-08 16:09:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:40,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:43,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354545672] [2024-11-08 16:09:43,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354545672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:09:43,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538105450] [2024-11-08 16:09:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:43,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:09:43,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:43,319 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:09:43,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:09:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:44,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-08 16:09:44,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:09:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:45,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:09:46,020 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_z_35 Int) (v_y_35 Int)) (or (< v_z_35 1) (< 255 v_z_35) (not (= (mod |c_ULTIMATE.start_main_~state_26~0#1| 256) (+ (* v_z_35 255) (* v_y_35 256)))))) (= (mod |c_ULTIMATE.start_main_~input_12~0#1| 256) 0) (= (mod |c_ULTIMATE.start_main_#t~bitwise105#1| 256) 0)) is different from false [2024-11-08 16:09:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:09:58,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538105450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:09:58,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:09:58,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 30 [2024-11-08 16:09:58,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259405124] [2024-11-08 16:09:58,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:09:58,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 16:09:58,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:58,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 16:09:58,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=690, Unknown=8, NotChecked=54, Total=870 [2024-11-08 16:09:58,984 INFO L87 Difference]: Start difference. First operand 3780 states and 5462 transitions. Second operand has 30 states, 30 states have (on average 14.7) internal successors, (441), 30 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:09:59,990 INFO L93 Difference]: Finished difference Result 7947 states and 11544 transitions. [2024-11-08 16:09:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 16:09:59,990 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 14.7) internal successors, (441), 30 states have internal predecessors, (441), 0 states have call successors, (0), 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 212 [2024-11-08 16:09:59,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:09:59,999 INFO L225 Difference]: With dead ends: 7947 [2024-11-08 16:09:59,999 INFO L226 Difference]: Without dead ends: 5406 [2024-11-08 16:10:00,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 400 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=406, Invalid=2242, Unknown=8, NotChecked=100, Total=2756 [2024-11-08 16:10:00,004 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 1613 mSDsluCounter, 8443 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 8934 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1249 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:00,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 8934 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 425 Invalid, 0 Unknown, 1249 Unchecked, 0.5s Time] [2024-11-08 16:10:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2024-11-08 16:10:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 4944. [2024-11-08 16:10:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4944 states, 4943 states have (on average 1.4440623103378516) internal successors, (7138), 4943 states have internal predecessors, (7138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:00,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 7138 transitions. [2024-11-08 16:10:00,078 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 7138 transitions. Word has length 212 [2024-11-08 16:10:00,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:00,078 INFO L471 AbstractCegarLoop]: Abstraction has 4944 states and 7138 transitions. [2024-11-08 16:10:00,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 14.7) internal successors, (441), 30 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:00,079 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 7138 transitions. [2024-11-08 16:10:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-08 16:10:00,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:00,083 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:00,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:10:00,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 16:10:00,284 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:00,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash -741667270, now seen corresponding path program 1 times [2024-11-08 16:10:00,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:00,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071760340] [2024-11-08 16:10:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:00,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:01,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:01,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071760340] [2024-11-08 16:10:01,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071760340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:01,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:01,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:10:01,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075034144] [2024-11-08 16:10:01,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:01,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:10:01,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:01,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:10:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:10:01,339 INFO L87 Difference]: Start difference. First operand 4944 states and 7138 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:01,463 INFO L93 Difference]: Finished difference Result 8335 states and 12072 transitions. [2024-11-08 16:10:01,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:10:01,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2024-11-08 16:10:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:01,471 INFO L225 Difference]: With dead ends: 8335 [2024-11-08 16:10:01,471 INFO L226 Difference]: Without dead ends: 4301 [2024-11-08 16:10:01,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:10:01,476 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 657 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:01,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1585 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:10:01,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2024-11-08 16:10:01,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 4299. [2024-11-08 16:10:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 4298 states have (on average 1.4441600744532341) internal successors, (6207), 4298 states have internal predecessors, (6207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 6207 transitions. [2024-11-08 16:10:01,537 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 6207 transitions. Word has length 212 [2024-11-08 16:10:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:01,538 INFO L471 AbstractCegarLoop]: Abstraction has 4299 states and 6207 transitions. [2024-11-08 16:10:01,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:01,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 6207 transitions. [2024-11-08 16:10:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-08 16:10:01,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:01,541 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:01,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-08 16:10:01,541 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:01,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:01,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1898329056, now seen corresponding path program 1 times [2024-11-08 16:10:01,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:01,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294042097] [2024-11-08 16:10:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:01,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:02,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:02,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294042097] [2024-11-08 16:10:02,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294042097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:02,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:02,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:10:02,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126994036] [2024-11-08 16:10:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:02,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:10:02,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:02,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:10:02,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:10:02,368 INFO L87 Difference]: Start difference. First operand 4299 states and 6207 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:03,088 INFO L93 Difference]: Finished difference Result 8362 states and 12112 transitions. [2024-11-08 16:10:03,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:10:03,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2024-11-08 16:10:03,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:03,095 INFO L225 Difference]: With dead ends: 8362 [2024-11-08 16:10:03,095 INFO L226 Difference]: Without dead ends: 4439 [2024-11-08 16:10:03,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:10:03,099 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 397 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:03,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1492 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:10:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2024-11-08 16:10:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 4439. [2024-11-08 16:10:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4439 states, 4438 states have (on average 1.4364578639026588) internal successors, (6375), 4438 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 6375 transitions. [2024-11-08 16:10:03,162 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 6375 transitions. Word has length 212 [2024-11-08 16:10:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:03,162 INFO L471 AbstractCegarLoop]: Abstraction has 4439 states and 6375 transitions. [2024-11-08 16:10:03,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 6375 transitions. [2024-11-08 16:10:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-08 16:10:03,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:03,165 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:03,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-08 16:10:03,166 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:03,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:03,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1294818756, now seen corresponding path program 1 times [2024-11-08 16:10:03,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:03,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474215582] [2024-11-08 16:10:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:03,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:06,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:06,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474215582] [2024-11-08 16:10:06,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474215582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:06,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815338011] [2024-11-08 16:10:06,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:06,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:06,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:06,258 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:06,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:10:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:07,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 16:10:07,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:08,196 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:10:08,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815338011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:08,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:10:08,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2024-11-08 16:10:08,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145732469] [2024-11-08 16:10:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:08,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 16:10:08,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:08,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 16:10:08,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2024-11-08 16:10:08,199 INFO L87 Difference]: Start difference. First operand 4439 states and 6375 transitions. Second operand has 9 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:08,848 INFO L93 Difference]: Finished difference Result 6449 states and 9284 transitions. [2024-11-08 16:10:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:10:08,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2024-11-08 16:10:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:08,855 INFO L225 Difference]: With dead ends: 6449 [2024-11-08 16:10:08,856 INFO L226 Difference]: Without dead ends: 4437 [2024-11-08 16:10:08,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2024-11-08 16:10:08,859 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 867 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:08,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1052 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:10:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4437 states. [2024-11-08 16:10:08,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4437 to 4437. [2024-11-08 16:10:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 4436 states have (on average 1.4359783588818755) internal successors, (6370), 4436 states have internal predecessors, (6370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 6370 transitions. [2024-11-08 16:10:08,918 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 6370 transitions. Word has length 212 [2024-11-08 16:10:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:08,919 INFO L471 AbstractCegarLoop]: Abstraction has 4437 states and 6370 transitions. [2024-11-08 16:10:08,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.555555555555557) internal successors, (212), 9 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 6370 transitions. [2024-11-08 16:10:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-08 16:10:08,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:08,922 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:08,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 16:10:09,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:09,123 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:09,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:09,124 INFO L85 PathProgramCache]: Analyzing trace with hash 428011222, now seen corresponding path program 1 times [2024-11-08 16:10:09,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:09,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85091989] [2024-11-08 16:10:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:09,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:10,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85091989] [2024-11-08 16:10:10,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85091989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:10,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095676812] [2024-11-08 16:10:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:10,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:10,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:10,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:10,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:10:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:11,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-08 16:10:11,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:14,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:10:14,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095676812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:14,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:10:14,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 23 [2024-11-08 16:10:14,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193837072] [2024-11-08 16:10:14,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:14,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 16:10:14,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:14,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 16:10:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:10:14,154 INFO L87 Difference]: Start difference. First operand 4437 states and 6370 transitions. Second operand has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:16,578 INFO L93 Difference]: Finished difference Result 6445 states and 9279 transitions. [2024-11-08 16:10:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 16:10:16,579 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2024-11-08 16:10:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:16,582 INFO L225 Difference]: With dead ends: 6445 [2024-11-08 16:10:16,583 INFO L226 Difference]: Without dead ends: 4549 [2024-11-08 16:10:16,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2024-11-08 16:10:16,586 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 961 mSDsluCounter, 4301 mSDsCounter, 0 mSdLazyCounter, 2908 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 4829 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:16,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 4829 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2908 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 16:10:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2024-11-08 16:10:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4447. [2024-11-08 16:10:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4447 states, 4446 states have (on average 1.4349977507872245) internal successors, (6380), 4446 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:16,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 6380 transitions. [2024-11-08 16:10:16,646 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 6380 transitions. Word has length 212 [2024-11-08 16:10:16,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:16,647 INFO L471 AbstractCegarLoop]: Abstraction has 4447 states and 6380 transitions. [2024-11-08 16:10:16,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.142857142857142) internal successors, (212), 14 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:16,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 6380 transitions. [2024-11-08 16:10:16,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-08 16:10:16,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:16,650 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:16,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:10:16,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:16,851 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:16,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:16,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1518654750, now seen corresponding path program 1 times [2024-11-08 16:10:16,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:16,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566664338] [2024-11-08 16:10:16,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:16,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:19,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566664338] [2024-11-08 16:10:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566664338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:19,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067812421] [2024-11-08 16:10:19,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:19,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:19,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:19,752 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:19,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:10:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:21,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-08 16:10:21,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:22,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:25,415 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:25,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067812421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:25,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:25,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 50 [2024-11-08 16:10:25,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795576217] [2024-11-08 16:10:25,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:25,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 16:10:25,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 16:10:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2163, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 16:10:25,418 INFO L87 Difference]: Start difference. First operand 4447 states and 6380 transitions. Second operand has 50 states, 50 states have (on average 12.08) internal successors, (604), 50 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:34,090 INFO L93 Difference]: Finished difference Result 11064 states and 15966 transitions. [2024-11-08 16:10:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-08 16:10:34,091 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 12.08) internal successors, (604), 50 states have internal predecessors, (604), 0 states have call successors, (0), 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 212 [2024-11-08 16:10:34,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:34,101 INFO L225 Difference]: With dead ends: 11064 [2024-11-08 16:10:34,101 INFO L226 Difference]: Without dead ends: 8732 [2024-11-08 16:10:34,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 395 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2439 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1592, Invalid=8914, Unknown=0, NotChecked=0, Total=10506 [2024-11-08 16:10:34,108 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 10291 mSDsluCounter, 7836 mSDsCounter, 0 mSdLazyCounter, 7390 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10291 SdHoareTripleChecker+Valid, 8071 SdHoareTripleChecker+Invalid, 7415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 7390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:34,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10291 Valid, 8071 Invalid, 7415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 7390 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-08 16:10:34,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8732 states. [2024-11-08 16:10:34,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8732 to 5931. [2024-11-08 16:10:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5931 states, 5930 states have (on average 1.4347386172006746) internal successors, (8508), 5930 states have internal predecessors, (8508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5931 states to 5931 states and 8508 transitions. [2024-11-08 16:10:34,206 INFO L78 Accepts]: Start accepts. Automaton has 5931 states and 8508 transitions. Word has length 212 [2024-11-08 16:10:34,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:34,206 INFO L471 AbstractCegarLoop]: Abstraction has 5931 states and 8508 transitions. [2024-11-08 16:10:34,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 12.08) internal successors, (604), 50 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5931 states and 8508 transitions. [2024-11-08 16:10:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-08 16:10:34,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:34,210 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:34,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 16:10:34,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:34,412 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:34,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1021152707, now seen corresponding path program 1 times [2024-11-08 16:10:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:34,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421664852] [2024-11-08 16:10:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:34,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:36,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421664852] [2024-11-08 16:10:36,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421664852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68179142] [2024-11-08 16:10:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:36,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:36,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:36,338 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:36,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:10:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:37,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-08 16:10:37,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:39,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:10:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:46,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68179142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:10:46,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:10:46,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 16] total 38 [2024-11-08 16:10:46,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774980417] [2024-11-08 16:10:46,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:10:46,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 16:10:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 16:10:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1206, Unknown=2, NotChecked=0, Total=1406 [2024-11-08 16:10:46,906 INFO L87 Difference]: Start difference. First operand 5931 states and 8508 transitions. Second operand has 38 states, 38 states have (on average 14.31578947368421) internal successors, (544), 38 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:54,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:10:54,065 INFO L93 Difference]: Finished difference Result 21210 states and 30565 transitions. [2024-11-08 16:10:54,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-08 16:10:54,065 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 14.31578947368421) internal successors, (544), 38 states have internal predecessors, (544), 0 states have call successors, (0), 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 213 [2024-11-08 16:10:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:10:54,074 INFO L225 Difference]: With dead ends: 21210 [2024-11-08 16:10:54,074 INFO L226 Difference]: Without dead ends: 16120 [2024-11-08 16:10:54,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 396 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2680 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1021, Invalid=6633, Unknown=2, NotChecked=0, Total=7656 [2024-11-08 16:10:54,078 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 4954 mSDsluCounter, 6346 mSDsCounter, 0 mSdLazyCounter, 4485 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4954 SdHoareTripleChecker+Valid, 6660 SdHoareTripleChecker+Invalid, 4506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:10:54,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4954 Valid, 6660 Invalid, 4506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 4485 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 16:10:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16120 states. [2024-11-08 16:10:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16120 to 7883. [2024-11-08 16:10:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7883 states, 7882 states have (on average 1.4303476275057092) internal successors, (11274), 7882 states have internal predecessors, (11274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7883 states to 7883 states and 11274 transitions. [2024-11-08 16:10:54,216 INFO L78 Accepts]: Start accepts. Automaton has 7883 states and 11274 transitions. Word has length 213 [2024-11-08 16:10:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:10:54,216 INFO L471 AbstractCegarLoop]: Abstraction has 7883 states and 11274 transitions. [2024-11-08 16:10:54,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 14.31578947368421) internal successors, (544), 38 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 7883 states and 11274 transitions. [2024-11-08 16:10:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-08 16:10:54,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:10:54,221 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:54,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 16:10:54,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:54,422 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:10:54,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:54,422 INFO L85 PathProgramCache]: Analyzing trace with hash -321009343, now seen corresponding path program 1 times [2024-11-08 16:10:54,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:54,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668174946] [2024-11-08 16:10:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:54,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:56,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:56,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668174946] [2024-11-08 16:10:56,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668174946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:10:56,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596018765] [2024-11-08 16:10:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:56,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:10:56,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:10:56,072 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:10:56,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:10:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:57,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-08 16:10:57,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:10:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:58,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:11:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:02,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596018765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:11:02,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:11:02,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 12] total 31 [2024-11-08 16:11:02,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113209323] [2024-11-08 16:11:02,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:11:02,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 16:11:02,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:11:02,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 16:11:02,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=821, Unknown=1, NotChecked=0, Total=930 [2024-11-08 16:11:02,504 INFO L87 Difference]: Start difference. First operand 7883 states and 11274 transitions. Second operand has 31 states, 31 states have (on average 17.806451612903224) internal successors, (552), 31 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:11:06,157 INFO L93 Difference]: Finished difference Result 12881 states and 18492 transitions. [2024-11-08 16:11:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 16:11:06,158 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 17.806451612903224) internal successors, (552), 31 states have internal predecessors, (552), 0 states have call successors, (0), 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 213 [2024-11-08 16:11:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:11:06,166 INFO L225 Difference]: With dead ends: 12881 [2024-11-08 16:11:06,166 INFO L226 Difference]: Without dead ends: 8487 [2024-11-08 16:11:06,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 400 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=451, Invalid=2628, Unknown=1, NotChecked=0, Total=3080 [2024-11-08 16:11:06,173 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 1738 mSDsluCounter, 7113 mSDsCounter, 0 mSdLazyCounter, 4458 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 7577 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:11:06,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1738 Valid, 7577 Invalid, 4466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 4458 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 16:11:06,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8487 states. [2024-11-08 16:11:06,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8487 to 7881. [2024-11-08 16:11:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7881 states, 7880 states have (on average 1.4286802030456853) internal successors, (11258), 7880 states have internal predecessors, (11258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7881 states to 7881 states and 11258 transitions. [2024-11-08 16:11:06,375 INFO L78 Accepts]: Start accepts. Automaton has 7881 states and 11258 transitions. Word has length 213 [2024-11-08 16:11:06,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:11:06,376 INFO L471 AbstractCegarLoop]: Abstraction has 7881 states and 11258 transitions. [2024-11-08 16:11:06,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 17.806451612903224) internal successors, (552), 31 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:06,376 INFO L276 IsEmpty]: Start isEmpty. Operand 7881 states and 11258 transitions. [2024-11-08 16:11:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-08 16:11:06,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:11:06,380 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:11:06,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 16:11:06,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:11:06,581 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:11:06,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:11:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -658297503, now seen corresponding path program 1 times [2024-11-08 16:11:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:11:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448835995] [2024-11-08 16:11:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:11:06,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:11:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:11:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:07,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:11:07,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448835995] [2024-11-08 16:11:07,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448835995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:11:07,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:11:07,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:11:07,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202786544] [2024-11-08 16:11:07,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:11:07,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:11:07,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:11:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:11:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:11:07,208 INFO L87 Difference]: Start difference. First operand 7881 states and 11258 transitions. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:11:07,290 INFO L93 Difference]: Finished difference Result 16283 states and 23371 transitions. [2024-11-08 16:11:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:11:07,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2024-11-08 16:11:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:11:07,299 INFO L225 Difference]: With dead ends: 16283 [2024-11-08 16:11:07,300 INFO L226 Difference]: Without dead ends: 8835 [2024-11-08 16:11:07,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:11:07,307 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 13 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:11:07,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2989 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:11:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8835 states. [2024-11-08 16:11:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8835 to 8835. [2024-11-08 16:11:07,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8835 states, 8834 states have (on average 1.4220058863482001) internal successors, (12562), 8834 states have internal predecessors, (12562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8835 states to 8835 states and 12562 transitions. [2024-11-08 16:11:07,417 INFO L78 Accepts]: Start accepts. Automaton has 8835 states and 12562 transitions. Word has length 213 [2024-11-08 16:11:07,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:11:07,418 INFO L471 AbstractCegarLoop]: Abstraction has 8835 states and 12562 transitions. [2024-11-08 16:11:07,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 8835 states and 12562 transitions. [2024-11-08 16:11:07,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-08 16:11:07,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:11:07,422 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:11:07,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-08 16:11:07,423 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:11:07,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:11:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -575072582, now seen corresponding path program 1 times [2024-11-08 16:11:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:11:07,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513090022] [2024-11-08 16:11:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:11:07,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:11:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:11:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:07,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:11:07,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513090022] [2024-11-08 16:11:07,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513090022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:11:07,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:11:07,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:11:07,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143387113] [2024-11-08 16:11:07,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:11:07,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:11:07,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:11:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:11:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:11:07,928 INFO L87 Difference]: Start difference. First operand 8835 states and 12562 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:11:07,977 INFO L93 Difference]: Finished difference Result 16239 states and 23152 transitions. [2024-11-08 16:11:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:11:07,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2024-11-08 16:11:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:11:07,984 INFO L225 Difference]: With dead ends: 16239 [2024-11-08 16:11:07,984 INFO L226 Difference]: Without dead ends: 9027 [2024-11-08 16:11:07,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:11:07,989 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 0 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:11:07,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1508 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:11:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9027 states. [2024-11-08 16:11:08,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9027 to 9027. [2024-11-08 16:11:08,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9027 states, 9026 states have (on average 1.4130290272545978) internal successors, (12754), 9026 states have internal predecessors, (12754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9027 states to 9027 states and 12754 transitions. [2024-11-08 16:11:08,101 INFO L78 Accepts]: Start accepts. Automaton has 9027 states and 12754 transitions. Word has length 213 [2024-11-08 16:11:08,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:11:08,102 INFO L471 AbstractCegarLoop]: Abstraction has 9027 states and 12754 transitions. [2024-11-08 16:11:08,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:11:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9027 states and 12754 transitions. [2024-11-08 16:11:08,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-08 16:11:08,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:11:08,107 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:11:08,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-08 16:11:08,107 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:11:08,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:11:08,107 INFO L85 PathProgramCache]: Analyzing trace with hash 473928645, now seen corresponding path program 1 times [2024-11-08 16:11:08,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:11:08,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425436855] [2024-11-08 16:11:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:11:08,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:11:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:11:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:11,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:11:11,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425436855] [2024-11-08 16:11:11,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425436855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:11:11,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917222248] [2024-11-08 16:11:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:11:11,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:11:11,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:11:11,960 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:11:11,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 16:11:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:11:13,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 218 conjuncts are in the unsatisfiable core [2024-11-08 16:11:13,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:11:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:21,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:11:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:11:33,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917222248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:11:33,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:11:33,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 36, 36] total 85 [2024-11-08 16:11:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585669582] [2024-11-08 16:11:33,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:11:33,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-08 16:11:33,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:11:33,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-08 16:11:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=729, Invalid=6411, Unknown=0, NotChecked=0, Total=7140 [2024-11-08 16:11:33,403 INFO L87 Difference]: Start difference. First operand 9027 states and 12754 transitions. Second operand has 85 states, 85 states have (on average 7.305882352941176) internal successors, (621), 85 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:06,090 INFO L93 Difference]: Finished difference Result 24696 states and 35047 transitions. [2024-11-08 16:12:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-08 16:12:06,091 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 7.305882352941176) internal successors, (621), 85 states have internal predecessors, (621), 0 states have call successors, (0), 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 213 [2024-11-08 16:12:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:06,103 INFO L225 Difference]: With dead ends: 24696 [2024-11-08 16:12:06,104 INFO L226 Difference]: Without dead ends: 21520 [2024-11-08 16:12:06,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14894 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=6039, Invalid=38693, Unknown=0, NotChecked=0, Total=44732 [2024-11-08 16:12:06,112 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 7703 mSDsluCounter, 19120 mSDsCounter, 0 mSdLazyCounter, 16339 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7703 SdHoareTripleChecker+Valid, 19510 SdHoareTripleChecker+Invalid, 16415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 16339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:06,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7703 Valid, 19510 Invalid, 16415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 16339 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2024-11-08 16:12:06,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21520 states. [2024-11-08 16:12:06,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21520 to 10924. [2024-11-08 16:12:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10924 states, 10923 states have (on average 1.4102352833470657) internal successors, (15404), 10923 states have internal predecessors, (15404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:06,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10924 states to 10924 states and 15404 transitions. [2024-11-08 16:12:06,284 INFO L78 Accepts]: Start accepts. Automaton has 10924 states and 15404 transitions. Word has length 213 [2024-11-08 16:12:06,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:06,284 INFO L471 AbstractCegarLoop]: Abstraction has 10924 states and 15404 transitions. [2024-11-08 16:12:06,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 7.305882352941176) internal successors, (621), 85 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:06,285 INFO L276 IsEmpty]: Start isEmpty. Operand 10924 states and 15404 transitions. [2024-11-08 16:12:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-08 16:12:06,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:06,291 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:06,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 16:12:06,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-08 16:12:06,491 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:06,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:06,492 INFO L85 PathProgramCache]: Analyzing trace with hash -760551439, now seen corresponding path program 1 times [2024-11-08 16:12:06,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:06,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552497758] [2024-11-08 16:12:06,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:06,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:08,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:08,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552497758] [2024-11-08 16:12:08,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552497758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:08,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964570153] [2024-11-08 16:12:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:08,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:08,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:08,290 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:08,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 16:12:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:09,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-08 16:12:09,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:10,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:27,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964570153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:27,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:27,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-08 16:12:27,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189454954] [2024-11-08 16:12:27,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:27,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 16:12:27,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 16:12:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=231, Unknown=10, NotChecked=0, Total=306 [2024-11-08 16:12:27,535 INFO L87 Difference]: Start difference. First operand 10924 states and 15404 transitions. Second operand has 18 states, 18 states have (on average 22.27777777777778) internal successors, (401), 18 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:27,901 INFO L93 Difference]: Finished difference Result 25901 states and 36645 transitions. [2024-11-08 16:12:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 16:12:27,902 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 22.27777777777778) internal successors, (401), 18 states have internal predecessors, (401), 0 states have call successors, (0), 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 214 [2024-11-08 16:12:27,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:27,914 INFO L225 Difference]: With dead ends: 25901 [2024-11-08 16:12:27,914 INFO L226 Difference]: Without dead ends: 18051 [2024-11-08 16:12:27,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 418 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=183, Invalid=563, Unknown=10, NotChecked=0, Total=756 [2024-11-08 16:12:27,921 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 2756 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2756 SdHoareTripleChecker+Valid, 3735 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:27,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2756 Valid, 3735 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:12:27,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18051 states. [2024-11-08 16:12:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18051 to 12236. [2024-11-08 16:12:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12236 states, 12235 states have (on average 1.4087454025337147) internal successors, (17236), 12235 states have internal predecessors, (17236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12236 states to 12236 states and 17236 transitions. [2024-11-08 16:12:28,097 INFO L78 Accepts]: Start accepts. Automaton has 12236 states and 17236 transitions. Word has length 214 [2024-11-08 16:12:28,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:28,098 INFO L471 AbstractCegarLoop]: Abstraction has 12236 states and 17236 transitions. [2024-11-08 16:12:28,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 22.27777777777778) internal successors, (401), 18 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 12236 states and 17236 transitions. [2024-11-08 16:12:28,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-08 16:12:28,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:28,105 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:28,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 16:12:28,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-08 16:12:28,306 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:28,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1346303129, now seen corresponding path program 1 times [2024-11-08 16:12:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:28,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760611025] [2024-11-08 16:12:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:28,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:28,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:28,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760611025] [2024-11-08 16:12:28,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760611025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:28,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:28,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:28,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772523772] [2024-11-08 16:12:28,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:28,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:28,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:28,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:28,670 INFO L87 Difference]: Start difference. First operand 12236 states and 17236 transitions. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:28,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:28,736 INFO L93 Difference]: Finished difference Result 23911 states and 33732 transitions. [2024-11-08 16:12:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:12:28,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2024-11-08 16:12:28,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:28,745 INFO L225 Difference]: With dead ends: 23911 [2024-11-08 16:12:28,745 INFO L226 Difference]: Without dead ends: 12468 [2024-11-08 16:12:28,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:28,751 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 0 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:28,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2008 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12468 states. [2024-11-08 16:12:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12468 to 12468. [2024-11-08 16:12:28,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12468 states, 12467 states have (on average 1.401139006978423) internal successors, (17468), 12467 states have internal predecessors, (17468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:28,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12468 states to 12468 states and 17468 transitions. [2024-11-08 16:12:28,870 INFO L78 Accepts]: Start accepts. Automaton has 12468 states and 17468 transitions. Word has length 214 [2024-11-08 16:12:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:28,870 INFO L471 AbstractCegarLoop]: Abstraction has 12468 states and 17468 transitions. [2024-11-08 16:12:28,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:28,871 INFO L276 IsEmpty]: Start isEmpty. Operand 12468 states and 17468 transitions. [2024-11-08 16:12:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-08 16:12:28,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:28,877 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:28,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-08 16:12:28,878 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:28,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:28,878 INFO L85 PathProgramCache]: Analyzing trace with hash 612939996, now seen corresponding path program 1 times [2024-11-08 16:12:28,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:28,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245973060] [2024-11-08 16:12:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:28,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:29,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:29,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245973060] [2024-11-08 16:12:29,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245973060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:29,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:29,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650942632] [2024-11-08 16:12:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:29,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:29,276 INFO L87 Difference]: Start difference. First operand 12468 states and 17468 transitions. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:29,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:29,362 INFO L93 Difference]: Finished difference Result 33767 states and 47417 transitions. [2024-11-08 16:12:29,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:29,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2024-11-08 16:12:29,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:29,377 INFO L225 Difference]: With dead ends: 33767 [2024-11-08 16:12:29,377 INFO L226 Difference]: Without dead ends: 22107 [2024-11-08 16:12:29,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:12:29,385 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 207 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:29,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 2008 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:29,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22107 states. [2024-11-08 16:12:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22107 to 12932. [2024-11-08 16:12:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12932 states, 12931 states have (on average 1.3957157219085918) internal successors, (18048), 12931 states have internal predecessors, (18048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12932 states to 12932 states and 18048 transitions. [2024-11-08 16:12:29,521 INFO L78 Accepts]: Start accepts. Automaton has 12932 states and 18048 transitions. Word has length 214 [2024-11-08 16:12:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:29,522 INFO L471 AbstractCegarLoop]: Abstraction has 12932 states and 18048 transitions. [2024-11-08 16:12:29,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:29,522 INFO L276 IsEmpty]: Start isEmpty. Operand 12932 states and 18048 transitions. [2024-11-08 16:12:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-08 16:12:29,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:29,529 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:29,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-08 16:12:29,529 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:29,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1464777821, now seen corresponding path program 1 times [2024-11-08 16:12:29,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:29,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457514227] [2024-11-08 16:12:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:29,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:29,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:29,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457514227] [2024-11-08 16:12:29,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457514227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:29,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:29,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:29,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274695913] [2024-11-08 16:12:29,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:29,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:29,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:29,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:29,908 INFO L87 Difference]: Start difference. First operand 12932 states and 18048 transitions. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:30,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:30,041 INFO L93 Difference]: Finished difference Result 24891 states and 34798 transitions. [2024-11-08 16:12:30,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:30,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2024-11-08 16:12:30,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:30,050 INFO L225 Difference]: With dead ends: 24891 [2024-11-08 16:12:30,051 INFO L226 Difference]: Without dead ends: 12782 [2024-11-08 16:12:30,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:12:30,058 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 942 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:30,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1484 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12782 states. [2024-11-08 16:12:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12782 to 12782. [2024-11-08 16:12:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12782 states, 12781 states have (on average 1.3933182067130898) internal successors, (17808), 12781 states have internal predecessors, (17808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12782 states to 12782 states and 17808 transitions. [2024-11-08 16:12:30,162 INFO L78 Accepts]: Start accepts. Automaton has 12782 states and 17808 transitions. Word has length 214 [2024-11-08 16:12:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:30,163 INFO L471 AbstractCegarLoop]: Abstraction has 12782 states and 17808 transitions. [2024-11-08 16:12:30,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 5 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 12782 states and 17808 transitions. [2024-11-08 16:12:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-08 16:12:30,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:30,168 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:30,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-08 16:12:30,169 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:30,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -864813006, now seen corresponding path program 1 times [2024-11-08 16:12:30,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:30,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411723190] [2024-11-08 16:12:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:30,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:30,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:30,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411723190] [2024-11-08 16:12:30,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411723190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:30,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:30,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:12:30,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965489336] [2024-11-08 16:12:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:30,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:12:30,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:30,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:12:30,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:12:30,533 INFO L87 Difference]: Start difference. First operand 12782 states and 17808 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:30,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:30,594 INFO L93 Difference]: Finished difference Result 23382 states and 32635 transitions. [2024-11-08 16:12:30,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:12:30,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2024-11-08 16:12:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:30,607 INFO L225 Difference]: With dead ends: 23382 [2024-11-08 16:12:30,607 INFO L226 Difference]: Without dead ends: 12816 [2024-11-08 16:12:30,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:12:30,615 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 0 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:30,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1508 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12816 states. [2024-11-08 16:12:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12816 to 12816. [2024-11-08 16:12:30,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12816 states, 12815 states have (on average 1.392274678111588) internal successors, (17842), 12815 states have internal predecessors, (17842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:30,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12816 states to 12816 states and 17842 transitions. [2024-11-08 16:12:30,726 INFO L78 Accepts]: Start accepts. Automaton has 12816 states and 17842 transitions. Word has length 214 [2024-11-08 16:12:30,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:30,726 INFO L471 AbstractCegarLoop]: Abstraction has 12816 states and 17842 transitions. [2024-11-08 16:12:30,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:30,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12816 states and 17842 transitions. [2024-11-08 16:12:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-08 16:12:30,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:30,732 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:30,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-08 16:12:30,733 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:30,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash -941265165, now seen corresponding path program 1 times [2024-11-08 16:12:30,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:30,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762705232] [2024-11-08 16:12:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:30,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762705232] [2024-11-08 16:12:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762705232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:31,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:31,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:12:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153252613] [2024-11-08 16:12:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:31,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:12:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:12:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:12:31,137 INFO L87 Difference]: Start difference. First operand 12816 states and 17842 transitions. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:31,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:31,260 INFO L93 Difference]: Finished difference Result 24591 states and 34288 transitions. [2024-11-08 16:12:31,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:31,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2024-11-08 16:12:31,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:31,268 INFO L225 Difference]: With dead ends: 24591 [2024-11-08 16:12:31,269 INFO L226 Difference]: Without dead ends: 12426 [2024-11-08 16:12:31,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:12:31,274 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 545 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:31,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1480 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:31,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12426 states. [2024-11-08 16:12:31,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12426 to 12426. [2024-11-08 16:12:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12426 states, 12425 states have (on average 1.3876861167002013) internal successors, (17242), 12425 states have internal predecessors, (17242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12426 states to 12426 states and 17242 transitions. [2024-11-08 16:12:31,370 INFO L78 Accepts]: Start accepts. Automaton has 12426 states and 17242 transitions. Word has length 215 [2024-11-08 16:12:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:31,370 INFO L471 AbstractCegarLoop]: Abstraction has 12426 states and 17242 transitions. [2024-11-08 16:12:31,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:31,371 INFO L276 IsEmpty]: Start isEmpty. Operand 12426 states and 17242 transitions. [2024-11-08 16:12:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-08 16:12:31,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:31,374 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:31,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-08 16:12:31,374 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:31,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1135929677, now seen corresponding path program 1 times [2024-11-08 16:12:31,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591989209] [2024-11-08 16:12:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:31,818 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:31,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:31,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591989209] [2024-11-08 16:12:31,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591989209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:31,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:31,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:31,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667103116] [2024-11-08 16:12:31,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:31,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:31,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:31,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:31,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:31,820 INFO L87 Difference]: Start difference. First operand 12426 states and 17242 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:31,942 INFO L93 Difference]: Finished difference Result 22348 states and 31108 transitions. [2024-11-08 16:12:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:31,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2024-11-08 16:12:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:31,950 INFO L225 Difference]: With dead ends: 22348 [2024-11-08 16:12:31,950 INFO L226 Difference]: Without dead ends: 10348 [2024-11-08 16:12:31,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:12:31,956 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 892 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:31,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1484 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2024-11-08 16:12:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 10348. [2024-11-08 16:12:32,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10348 states, 10347 states have (on average 1.3909345704068812) internal successors, (14392), 10347 states have internal predecessors, (14392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10348 states to 10348 states and 14392 transitions. [2024-11-08 16:12:32,039 INFO L78 Accepts]: Start accepts. Automaton has 10348 states and 14392 transitions. Word has length 215 [2024-11-08 16:12:32,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:32,039 INFO L471 AbstractCegarLoop]: Abstraction has 10348 states and 14392 transitions. [2024-11-08 16:12:32,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 10348 states and 14392 transitions. [2024-11-08 16:12:32,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-08 16:12:32,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:32,042 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:32,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-08 16:12:32,042 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:32,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:32,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1450444694, now seen corresponding path program 1 times [2024-11-08 16:12:32,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:32,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88693523] [2024-11-08 16:12:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:32,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:32,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88693523] [2024-11-08 16:12:32,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88693523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:32,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:32,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:32,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935981057] [2024-11-08 16:12:32,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:32,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:32,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:32,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:32,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:32,418 INFO L87 Difference]: Start difference. First operand 10348 states and 14392 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:32,553 INFO L93 Difference]: Finished difference Result 19476 states and 27148 transitions. [2024-11-08 16:12:32,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:32,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2024-11-08 16:12:32,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:32,563 INFO L225 Difference]: With dead ends: 19476 [2024-11-08 16:12:32,564 INFO L226 Difference]: Without dead ends: 9355 [2024-11-08 16:12:32,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:12:32,571 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 881 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:32,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1487 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:32,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9355 states. [2024-11-08 16:12:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9355 to 9355. [2024-11-08 16:12:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9355 states, 9354 states have (on average 1.3960872354073124) internal successors, (13059), 9354 states have internal predecessors, (13059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9355 states to 9355 states and 13059 transitions. [2024-11-08 16:12:32,654 INFO L78 Accepts]: Start accepts. Automaton has 9355 states and 13059 transitions. Word has length 215 [2024-11-08 16:12:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:32,655 INFO L471 AbstractCegarLoop]: Abstraction has 9355 states and 13059 transitions. [2024-11-08 16:12:32,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 9355 states and 13059 transitions. [2024-11-08 16:12:32,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-08 16:12:32,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:32,657 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:32,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-08 16:12:32,657 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:32,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:32,658 INFO L85 PathProgramCache]: Analyzing trace with hash 839837488, now seen corresponding path program 1 times [2024-11-08 16:12:32,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:32,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237465872] [2024-11-08 16:12:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237465872] [2024-11-08 16:12:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237465872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:32,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:32,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:12:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84341337] [2024-11-08 16:12:32,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:32,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:12:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:32,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:12:32,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:12:32,985 INFO L87 Difference]: Start difference. First operand 9355 states and 13059 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:33,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:33,034 INFO L93 Difference]: Finished difference Result 18228 states and 25474 transitions. [2024-11-08 16:12:33,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:12:33,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2024-11-08 16:12:33,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:33,041 INFO L225 Difference]: With dead ends: 18228 [2024-11-08 16:12:33,041 INFO L226 Difference]: Without dead ends: 9383 [2024-11-08 16:12:33,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:12:33,046 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 0 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:33,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1508 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:33,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9383 states. [2024-11-08 16:12:33,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9383 to 9383. [2024-11-08 16:12:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9383 states, 9382 states have (on average 1.3949051374973354) internal successors, (13087), 9382 states have internal predecessors, (13087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9383 states to 9383 states and 13087 transitions. [2024-11-08 16:12:33,166 INFO L78 Accepts]: Start accepts. Automaton has 9383 states and 13087 transitions. Word has length 215 [2024-11-08 16:12:33,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:33,166 INFO L471 AbstractCegarLoop]: Abstraction has 9383 states and 13087 transitions. [2024-11-08 16:12:33,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:33,166 INFO L276 IsEmpty]: Start isEmpty. Operand 9383 states and 13087 transitions. [2024-11-08 16:12:33,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-08 16:12:33,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:33,168 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:33,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-08 16:12:33,168 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:33,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:33,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1936681110, now seen corresponding path program 1 times [2024-11-08 16:12:33,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:33,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598787379] [2024-11-08 16:12:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:33,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:33,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598787379] [2024-11-08 16:12:33,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598787379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:33,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:33,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:33,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253263286] [2024-11-08 16:12:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:33,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:33,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:33,530 INFO L87 Difference]: Start difference. First operand 9383 states and 13087 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:33,639 INFO L93 Difference]: Finished difference Result 18323 states and 25576 transitions. [2024-11-08 16:12:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:33,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2024-11-08 16:12:33,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:33,645 INFO L225 Difference]: With dead ends: 18323 [2024-11-08 16:12:33,645 INFO L226 Difference]: Without dead ends: 9139 [2024-11-08 16:12:33,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:12:33,650 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 869 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:33,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1487 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9139 states. [2024-11-08 16:12:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9139 to 9139. [2024-11-08 16:12:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9139 states, 9138 states have (on average 1.395491354782228) internal successors, (12752), 9138 states have internal predecessors, (12752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9139 states to 9139 states and 12752 transitions. [2024-11-08 16:12:33,726 INFO L78 Accepts]: Start accepts. Automaton has 9139 states and 12752 transitions. Word has length 216 [2024-11-08 16:12:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:33,726 INFO L471 AbstractCegarLoop]: Abstraction has 9139 states and 12752 transitions. [2024-11-08 16:12:33,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 9139 states and 12752 transitions. [2024-11-08 16:12:33,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-08 16:12:33,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:33,728 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:33,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-08 16:12:33,729 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:33,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:33,729 INFO L85 PathProgramCache]: Analyzing trace with hash -637080108, now seen corresponding path program 1 times [2024-11-08 16:12:33,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:33,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389135149] [2024-11-08 16:12:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:33,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:35,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389135149] [2024-11-08 16:12:35,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389135149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:35,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372685232] [2024-11-08 16:12:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:35,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:35,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:35,676 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:35,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 16:12:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:37,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 16:12:37,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:39,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:42,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372685232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:42,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:42,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 13] total 26 [2024-11-08 16:12:42,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222127400] [2024-11-08 16:12:42,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:42,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 16:12:42,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:42,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 16:12:42,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-08 16:12:42,407 INFO L87 Difference]: Start difference. First operand 9139 states and 12752 transitions. Second operand has 26 states, 26 states have (on average 20.96153846153846) internal successors, (545), 26 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:45,066 INFO L93 Difference]: Finished difference Result 20076 states and 28148 transitions. [2024-11-08 16:12:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 16:12:45,067 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 20.96153846153846) internal successors, (545), 26 states have internal predecessors, (545), 0 states have call successors, (0), 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 216 [2024-11-08 16:12:45,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:45,076 INFO L225 Difference]: With dead ends: 20076 [2024-11-08 16:12:45,076 INFO L226 Difference]: Without dead ends: 14053 [2024-11-08 16:12:45,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 412 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=297, Invalid=1263, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 16:12:45,081 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 4192 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4192 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:45,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4192 Valid, 4000 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 16:12:45,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14053 states. [2024-11-08 16:12:45,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14053 to 8908. [2024-11-08 16:12:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8908 states, 8907 states have (on average 1.39665431682946) internal successors, (12440), 8907 states have internal predecessors, (12440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8908 states to 8908 states and 12440 transitions. [2024-11-08 16:12:45,164 INFO L78 Accepts]: Start accepts. Automaton has 8908 states and 12440 transitions. Word has length 216 [2024-11-08 16:12:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:45,165 INFO L471 AbstractCegarLoop]: Abstraction has 8908 states and 12440 transitions. [2024-11-08 16:12:45,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 20.96153846153846) internal successors, (545), 26 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:45,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8908 states and 12440 transitions. [2024-11-08 16:12:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-08 16:12:45,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:45,172 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:45,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 16:12:45,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-08 16:12:45,372 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:12:45,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:45,373 INFO L85 PathProgramCache]: Analyzing trace with hash 3753713, now seen corresponding path program 1 times [2024-11-08 16:12:45,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:45,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677547259] [2024-11-08 16:12:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:45,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:50,576 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 130 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 16:12:50,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:50,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677547259] [2024-11-08 16:12:50,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677547259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:50,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270896860] [2024-11-08 16:12:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:50,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:50,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:50,578 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:50,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 16:12:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:52,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-08 16:12:52,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 52 proven. 88 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 16:12:54,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 116 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 16:12:55,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270896860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:55,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:55,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 12] total 38 [2024-11-08 16:12:55,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144780634] [2024-11-08 16:12:55,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:55,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 16:12:55,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 16:12:55,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 16:12:55,829 INFO L87 Difference]: Start difference. First operand 8908 states and 12440 transitions. Second operand has 38 states, 38 states have (on average 23.394736842105264) internal successors, (889), 38 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:00,939 INFO L93 Difference]: Finished difference Result 22866 states and 32093 transitions. [2024-11-08 16:13:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-08 16:13:00,940 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 23.394736842105264) internal successors, (889), 38 states have internal predecessors, (889), 0 states have call successors, (0), 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 318 [2024-11-08 16:13:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:00,950 INFO L225 Difference]: With dead ends: 22866 [2024-11-08 16:13:00,950 INFO L226 Difference]: Without dead ends: 14555 [2024-11-08 16:13:00,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1205, Invalid=6105, Unknown=0, NotChecked=0, Total=7310 [2024-11-08 16:13:00,956 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 5864 mSDsluCounter, 5763 mSDsCounter, 0 mSdLazyCounter, 5373 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5864 SdHoareTripleChecker+Valid, 6027 SdHoareTripleChecker+Invalid, 5391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 5373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:00,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5864 Valid, 6027 Invalid, 5391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 5373 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-08 16:13:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14555 states. [2024-11-08 16:13:01,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14555 to 10531. [2024-11-08 16:13:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10531 states, 10530 states have (on average 1.4052231718898385) internal successors, (14797), 10530 states have internal predecessors, (14797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10531 states to 10531 states and 14797 transitions. [2024-11-08 16:13:01,113 INFO L78 Accepts]: Start accepts. Automaton has 10531 states and 14797 transitions. Word has length 318 [2024-11-08 16:13:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:01,113 INFO L471 AbstractCegarLoop]: Abstraction has 10531 states and 14797 transitions. [2024-11-08 16:13:01,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 23.394736842105264) internal successors, (889), 38 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:01,114 INFO L276 IsEmpty]: Start isEmpty. Operand 10531 states and 14797 transitions. [2024-11-08 16:13:01,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-08 16:13:01,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:01,124 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:01,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 16:13:01,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:01,326 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:13:01,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:01,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2130460847, now seen corresponding path program 1 times [2024-11-08 16:13:01,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:01,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411262148] [2024-11-08 16:13:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:01,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 102 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:06,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:06,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411262148] [2024-11-08 16:13:06,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411262148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:06,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683107564] [2024-11-08 16:13:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:06,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:06,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:06,859 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:06,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 16:13:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:08,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 16:13:09,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 47 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:10,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-08 16:13:10,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683107564] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:10,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 16:13:10,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13, 11] total 24 [2024-11-08 16:13:10,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039505213] [2024-11-08 16:13:10,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:13:10,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:13:10,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:13:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-11-08 16:13:10,414 INFO L87 Difference]: Start difference. First operand 10531 states and 14797 transitions. Second operand has 7 states, 7 states have (on average 35.42857142857143) internal successors, (248), 7 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:10,621 INFO L93 Difference]: Finished difference Result 25518 states and 36333 transitions. [2024-11-08 16:13:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:13:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.42857142857143) internal successors, (248), 7 states have internal predecessors, (248), 0 states have call successors, (0), 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 320 [2024-11-08 16:13:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:10,633 INFO L225 Difference]: With dead ends: 25518 [2024-11-08 16:13:10,633 INFO L226 Difference]: Without dead ends: 15856 [2024-11-08 16:13:10,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2024-11-08 16:13:10,640 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 166 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:10,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2596 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:13:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15856 states. [2024-11-08 16:13:10,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15856 to 12942. [2024-11-08 16:13:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12942 states, 12941 states have (on average 1.41797388146202) internal successors, (18350), 12941 states have internal predecessors, (18350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12942 states to 12942 states and 18350 transitions. [2024-11-08 16:13:10,754 INFO L78 Accepts]: Start accepts. Automaton has 12942 states and 18350 transitions. Word has length 320 [2024-11-08 16:13:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:10,755 INFO L471 AbstractCegarLoop]: Abstraction has 12942 states and 18350 transitions. [2024-11-08 16:13:10,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.42857142857143) internal successors, (248), 7 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 12942 states and 18350 transitions. [2024-11-08 16:13:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-08 16:13:10,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:10,766 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:10,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 16:13:10,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:10,967 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:13:10,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash -48310480, now seen corresponding path program 1 times [2024-11-08 16:13:10,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:10,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088744374] [2024-11-08 16:13:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:10,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:13:14,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:14,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088744374] [2024-11-08 16:13:14,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088744374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:13:14,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:13:14,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:13:14,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535217039] [2024-11-08 16:13:14,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:13:14,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:13:14,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:14,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:13:14,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:13:14,121 INFO L87 Difference]: Start difference. First operand 12942 states and 18350 transitions. Second operand has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:14,370 INFO L93 Difference]: Finished difference Result 33464 states and 47619 transitions. [2024-11-08 16:13:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:13:14,371 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 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 321 [2024-11-08 16:13:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:14,384 INFO L225 Difference]: With dead ends: 33464 [2024-11-08 16:13:14,384 INFO L226 Difference]: Without dead ends: 21276 [2024-11-08 16:13:14,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:13:14,392 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 434 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:14,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 3958 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:13:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21276 states. [2024-11-08 16:13:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21276 to 17366. [2024-11-08 16:13:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17366 states, 17365 states have (on average 1.4076590843651022) internal successors, (24444), 17365 states have internal predecessors, (24444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17366 states to 17366 states and 24444 transitions. [2024-11-08 16:13:14,537 INFO L78 Accepts]: Start accepts. Automaton has 17366 states and 24444 transitions. Word has length 321 [2024-11-08 16:13:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:14,537 INFO L471 AbstractCegarLoop]: Abstraction has 17366 states and 24444 transitions. [2024-11-08 16:13:14,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.3) internal successors, (313), 10 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 17366 states and 24444 transitions. [2024-11-08 16:13:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-08 16:13:14,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:14,551 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:14,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-11-08 16:13:14,552 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:13:14,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1179070221, now seen corresponding path program 1 times [2024-11-08 16:13:14,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:14,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002226506] [2024-11-08 16:13:14,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:14,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 16:13:17,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:17,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002226506] [2024-11-08 16:13:17,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002226506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:13:17,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:13:17,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 16:13:17,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716539028] [2024-11-08 16:13:17,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:13:17,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 16:13:17,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:17,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 16:13:17,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:13:17,801 INFO L87 Difference]: Start difference. First operand 17366 states and 24444 transitions. Second operand has 9 states, 9 states have (on average 34.77777777777778) internal successors, (313), 9 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:18,037 INFO L93 Difference]: Finished difference Result 37542 states and 53164 transitions. [2024-11-08 16:13:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:13:18,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 34.77777777777778) internal successors, (313), 9 states have internal predecessors, (313), 0 states have call successors, (0), 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 321 [2024-11-08 16:13:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:18,051 INFO L225 Difference]: With dead ends: 37542 [2024-11-08 16:13:18,051 INFO L226 Difference]: Without dead ends: 21041 [2024-11-08 16:13:18,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:13:18,060 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 188 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 3943 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:18,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 3943 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:13:18,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21041 states. [2024-11-08 16:13:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21041 to 17567. [2024-11-08 16:13:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17567 states, 17566 states have (on average 1.4081179551406124) internal successors, (24735), 17566 states have internal predecessors, (24735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:18,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17567 states to 17567 states and 24735 transitions. [2024-11-08 16:13:18,201 INFO L78 Accepts]: Start accepts. Automaton has 17567 states and 24735 transitions. Word has length 321 [2024-11-08 16:13:18,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:18,201 INFO L471 AbstractCegarLoop]: Abstraction has 17567 states and 24735 transitions. [2024-11-08 16:13:18,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.77777777777778) internal successors, (313), 9 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 17567 states and 24735 transitions. [2024-11-08 16:13:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-08 16:13:18,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:18,208 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:18,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-08 16:13:18,208 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:13:18,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:18,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1306980049, now seen corresponding path program 1 times [2024-11-08 16:13:18,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:18,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644432368] [2024-11-08 16:13:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:18,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 115 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:25,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:25,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644432368] [2024-11-08 16:13:25,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644432368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:25,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581723876] [2024-11-08 16:13:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:25,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:25,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:25,151 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:25,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 16:13:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:27,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 16:13:27,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 102 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:28,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 102 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:29,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581723876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:29,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:29,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 8] total 29 [2024-11-08 16:13:29,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079058450] [2024-11-08 16:13:29,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:29,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 16:13:29,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 16:13:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2024-11-08 16:13:29,921 INFO L87 Difference]: Start difference. First operand 17567 states and 24735 transitions. Second operand has 29 states, 29 states have (on average 27.896551724137932) internal successors, (809), 29 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:34,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:34,040 INFO L93 Difference]: Finished difference Result 55112 states and 77208 transitions. [2024-11-08 16:13:34,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-08 16:13:34,041 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 27.896551724137932) internal successors, (809), 29 states have internal predecessors, (809), 0 states have call successors, (0), 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 321 [2024-11-08 16:13:34,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:34,066 INFO L225 Difference]: With dead ends: 55112 [2024-11-08 16:13:34,067 INFO L226 Difference]: Without dead ends: 39171 [2024-11-08 16:13:34,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=971, Invalid=6169, Unknown=0, NotChecked=0, Total=7140 [2024-11-08 16:13:34,080 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 5018 mSDsluCounter, 9764 mSDsCounter, 0 mSdLazyCounter, 3476 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5018 SdHoareTripleChecker+Valid, 10365 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:34,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5018 Valid, 10365 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3476 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 16:13:34,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39171 states. [2024-11-08 16:13:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39171 to 25434. [2024-11-08 16:13:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25434 states, 25433 states have (on average 1.4025478708764203) internal successors, (35671), 25433 states have internal predecessors, (35671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25434 states to 25434 states and 35671 transitions. [2024-11-08 16:13:34,327 INFO L78 Accepts]: Start accepts. Automaton has 25434 states and 35671 transitions. Word has length 321 [2024-11-08 16:13:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:34,327 INFO L471 AbstractCegarLoop]: Abstraction has 25434 states and 35671 transitions. [2024-11-08 16:13:34,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 27.896551724137932) internal successors, (809), 29 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 25434 states and 35671 transitions. [2024-11-08 16:13:34,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-08 16:13:34,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:34,335 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:34,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 16:13:34,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:34,536 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:13:34,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1956663110, now seen corresponding path program 1 times [2024-11-08 16:13:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:34,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692302530] [2024-11-08 16:13:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:34,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 103 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:39,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:39,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692302530] [2024-11-08 16:13:39,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692302530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:39,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806720604] [2024-11-08 16:13:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:39,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:39,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:39,870 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:39,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 16:13:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:43,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 179 conjuncts are in the unsatisfiable core [2024-11-08 16:13:43,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:50,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 79 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:59,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806720604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:59,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:59,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 21] total 50 [2024-11-08 16:13:59,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173351628] [2024-11-08 16:13:59,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:59,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 16:13:59,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:59,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 16:13:59,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2164, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 16:13:59,169 INFO L87 Difference]: Start difference. First operand 25434 states and 35671 transitions. Second operand has 50 states, 50 states have (on average 17.88) internal successors, (894), 50 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:14:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:14:12,398 INFO L93 Difference]: Finished difference Result 71326 states and 99813 transitions. [2024-11-08 16:14:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-08 16:14:12,399 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 17.88) internal successors, (894), 50 states have internal predecessors, (894), 0 states have call successors, (0), 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 322 [2024-11-08 16:14:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:14:12,439 INFO L225 Difference]: With dead ends: 71326 [2024-11-08 16:14:12,439 INFO L226 Difference]: Without dead ends: 48164 [2024-11-08 16:14:12,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5810 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2273, Invalid=17467, Unknown=0, NotChecked=0, Total=19740 [2024-11-08 16:14:12,455 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 7842 mSDsluCounter, 11888 mSDsCounter, 0 mSdLazyCounter, 10083 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7842 SdHoareTripleChecker+Valid, 12343 SdHoareTripleChecker+Invalid, 10115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 10083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:14:12,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7842 Valid, 12343 Invalid, 10115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 10083 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-08 16:14:12,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48164 states. [2024-11-08 16:14:12,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48164 to 36316. [2024-11-08 16:14:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36316 states, 36315 states have (on average 1.3981825691862866) internal successors, (50775), 36315 states have internal predecessors, (50775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:14:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36316 states to 36316 states and 50775 transitions. [2024-11-08 16:14:12,859 INFO L78 Accepts]: Start accepts. Automaton has 36316 states and 50775 transitions. Word has length 322 [2024-11-08 16:14:12,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:14:12,860 INFO L471 AbstractCegarLoop]: Abstraction has 36316 states and 50775 transitions. [2024-11-08 16:14:12,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 17.88) internal successors, (894), 50 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:14:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 36316 states and 50775 transitions. [2024-11-08 16:14:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-08 16:14:12,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:14:12,874 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:12,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 16:14:13,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-08 16:14:13,075 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:14:13,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:13,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1732290399, now seen corresponding path program 1 times [2024-11-08 16:14:13,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:13,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059517629] [2024-11-08 16:14:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:13,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 113 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:21,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:21,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059517629] [2024-11-08 16:14:21,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059517629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:21,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672227719] [2024-11-08 16:14:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:21,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:21,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:21,177 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:21,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 16:14:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:23,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 2429 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-08 16:14:23,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 8 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:26,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:31,611 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 8 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:31,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672227719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:31,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:31,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 31, 26] total 69 [2024-11-08 16:14:31,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097415872] [2024-11-08 16:14:31,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:31,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-08 16:14:31,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:31,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-08 16:14:31,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=4280, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 16:14:31,614 INFO L87 Difference]: Start difference. First operand 36316 states and 50775 transitions. Second operand has 69 states, 69 states have (on average 13.840579710144928) internal successors, (955), 69 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:15:12,464 INFO L93 Difference]: Finished difference Result 165033 states and 230236 transitions. [2024-11-08 16:15:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 441 states. [2024-11-08 16:15:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 13.840579710144928) internal successors, (955), 69 states have internal predecessors, (955), 0 states have call successors, (0), 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 323 [2024-11-08 16:15:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:15:12,596 INFO L225 Difference]: With dead ends: 165033 [2024-11-08 16:15:12,596 INFO L226 Difference]: Without dead ends: 129369 [2024-11-08 16:15:12,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1100 GetRequests, 593 SyntacticMatches, 1 SemanticMatches, 506 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105927 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=20938, Invalid=236618, Unknown=0, NotChecked=0, Total=257556 [2024-11-08 16:15:12,638 INFO L432 NwaCegarLoop]: 1060 mSDtfsCounter, 19141 mSDsluCounter, 40098 mSDsCounter, 0 mSdLazyCounter, 8842 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19141 SdHoareTripleChecker+Valid, 41158 SdHoareTripleChecker+Invalid, 8926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 8842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:15:12,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19141 Valid, 41158 Invalid, 8926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 8842 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-08 16:15:12,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129369 states. [2024-11-08 16:15:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129369 to 47178. [2024-11-08 16:15:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47178 states, 47177 states have (on average 1.399771074888187) internal successors, (66037), 47177 states have internal predecessors, (66037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47178 states to 47178 states and 66037 transitions. [2024-11-08 16:15:13,559 INFO L78 Accepts]: Start accepts. Automaton has 47178 states and 66037 transitions. Word has length 323 [2024-11-08 16:15:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:15:13,559 INFO L471 AbstractCegarLoop]: Abstraction has 47178 states and 66037 transitions. [2024-11-08 16:15:13,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 13.840579710144928) internal successors, (955), 69 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 47178 states and 66037 transitions. [2024-11-08 16:15:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-08 16:15:13,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:15:13,573 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:15:13,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 16:15:13,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-08 16:15:13,773 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:15:13,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:15:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1283379345, now seen corresponding path program 1 times [2024-11-08 16:15:13,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:15:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62330182] [2024-11-08 16:15:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:13,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:15:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:19,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:15:19,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62330182] [2024-11-08 16:15:19,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62330182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:15:19,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289111142] [2024-11-08 16:15:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:19,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:15:19,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:15:19,465 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:15:19,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 16:15:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:23,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 2432 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-08 16:15:23,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:15:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:24,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:15:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:26,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289111142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:15:26,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:15:26,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 29 [2024-11-08 16:15:26,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257816990] [2024-11-08 16:15:26,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:15:26,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 16:15:26,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:15:26,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 16:15:26,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2024-11-08 16:15:26,942 INFO L87 Difference]: Start difference. First operand 47178 states and 66037 transitions. Second operand has 29 states, 29 states have (on average 27.17241379310345) internal successors, (788), 29 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:30,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:15:30,339 INFO L93 Difference]: Finished difference Result 105584 states and 147589 transitions. [2024-11-08 16:15:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 16:15:30,340 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 27.17241379310345) internal successors, (788), 29 states have internal predecessors, (788), 0 states have call successors, (0), 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 324 [2024-11-08 16:15:30,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:15:30,381 INFO L225 Difference]: With dead ends: 105584 [2024-11-08 16:15:30,381 INFO L226 Difference]: Without dead ends: 58966 [2024-11-08 16:15:30,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=2134, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 16:15:30,407 INFO L432 NwaCegarLoop]: 340 mSDtfsCounter, 3537 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 3599 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3537 SdHoareTripleChecker+Valid, 4720 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:15:30,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3537 Valid, 4720 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3599 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 16:15:30,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58966 states. [2024-11-08 16:15:30,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58966 to 48007. [2024-11-08 16:15:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48007 states, 48006 states have (on average 1.397262842144732) internal successors, (67077), 48006 states have internal predecessors, (67077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48007 states to 48007 states and 67077 transitions. [2024-11-08 16:15:30,843 INFO L78 Accepts]: Start accepts. Automaton has 48007 states and 67077 transitions. Word has length 324 [2024-11-08 16:15:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:15:30,843 INFO L471 AbstractCegarLoop]: Abstraction has 48007 states and 67077 transitions. [2024-11-08 16:15:30,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 27.17241379310345) internal successors, (788), 29 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 48007 states and 67077 transitions. [2024-11-08 16:15:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-11-08 16:15:31,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:15:31,109 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:15:31,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-08 16:15:31,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-08 16:15:31,310 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:15:31,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:15:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash -836404672, now seen corresponding path program 1 times [2024-11-08 16:15:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:15:31,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039274521] [2024-11-08 16:15:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:31,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:15:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 16:15:32,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:15:32,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039274521] [2024-11-08 16:15:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039274521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:15:32,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:15:32,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:15:32,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049390007] [2024-11-08 16:15:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:15:32,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:15:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:15:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:15:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:15:32,054 INFO L87 Difference]: Start difference. First operand 48007 states and 67077 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:15:32,208 INFO L93 Difference]: Finished difference Result 88061 states and 123155 transitions. [2024-11-08 16:15:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:15:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 325 [2024-11-08 16:15:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:15:32,243 INFO L225 Difference]: With dead ends: 88061 [2024-11-08 16:15:32,243 INFO L226 Difference]: Without dead ends: 48119 [2024-11-08 16:15:32,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:15:32,263 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 0 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:15:32,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1508 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:15:32,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48119 states. [2024-11-08 16:15:32,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48119 to 48119. [2024-11-08 16:15:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48119 states, 48118 states have (on average 1.39513279853693) internal successors, (67131), 48118 states have internal predecessors, (67131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48119 states to 48119 states and 67131 transitions. [2024-11-08 16:15:32,765 INFO L78 Accepts]: Start accepts. Automaton has 48119 states and 67131 transitions. Word has length 325 [2024-11-08 16:15:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:15:32,765 INFO L471 AbstractCegarLoop]: Abstraction has 48119 states and 67131 transitions. [2024-11-08 16:15:32,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:15:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 48119 states and 67131 transitions. [2024-11-08 16:15:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-11-08 16:15:32,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:15:32,779 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:15:32,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-11-08 16:15:32,779 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:15:32,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:15:32,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1649386558, now seen corresponding path program 1 times [2024-11-08 16:15:32,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:15:32,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328581577] [2024-11-08 16:15:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:32,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:15:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 104 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:40,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:15:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328581577] [2024-11-08 16:15:40,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328581577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:15:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859710655] [2024-11-08 16:15:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:40,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:15:40,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:15:40,715 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:15:40,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 16:15:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:44,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-11-08 16:15:44,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:15:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 104 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:47,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:15:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 94 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:54,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859710655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:15:54,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:15:54,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 21] total 50 [2024-11-08 16:15:54,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704892400] [2024-11-08 16:15:54,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:15:54,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 16:15:54,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:15:54,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 16:15:54,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=2127, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 16:15:54,481 INFO L87 Difference]: Start difference. First operand 48119 states and 67131 transitions. Second operand has 50 states, 50 states have (on average 17.72) internal successors, (886), 50 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:16:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:16:02,182 INFO L93 Difference]: Finished difference Result 91373 states and 127864 transitions. [2024-11-08 16:16:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-08 16:16:02,183 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 17.72) internal successors, (886), 50 states have internal predecessors, (886), 0 states have call successors, (0), 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 325 [2024-11-08 16:16:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:16:02,222 INFO L225 Difference]: With dead ends: 91373 [2024-11-08 16:16:02,222 INFO L226 Difference]: Without dead ends: 54121 [2024-11-08 16:16:02,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 618 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2684 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1330, Invalid=8372, Unknown=0, NotChecked=0, Total=9702 [2024-11-08 16:16:02,244 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 2139 mSDsluCounter, 7026 mSDsCounter, 0 mSdLazyCounter, 6126 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2139 SdHoareTripleChecker+Valid, 7313 SdHoareTripleChecker+Invalid, 6158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 6126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:16:02,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2139 Valid, 7313 Invalid, 6158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 6126 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-08 16:16:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54121 states. [2024-11-08 16:16:02,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54121 to 47234. [2024-11-08 16:16:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47234 states, 47233 states have (on average 1.3941735650922025) internal successors, (65851), 47233 states have internal predecessors, (65851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:16:02,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47234 states to 47234 states and 65851 transitions. [2024-11-08 16:16:02,944 INFO L78 Accepts]: Start accepts. Automaton has 47234 states and 65851 transitions. Word has length 325 [2024-11-08 16:16:02,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:16:02,944 INFO L471 AbstractCegarLoop]: Abstraction has 47234 states and 65851 transitions. [2024-11-08 16:16:02,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 17.72) internal successors, (886), 50 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:16:02,944 INFO L276 IsEmpty]: Start isEmpty. Operand 47234 states and 65851 transitions. [2024-11-08 16:16:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-08 16:16:02,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:16:02,956 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:16:02,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 16:16:03,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-08 16:16:03,157 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:16:03,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:16:03,158 INFO L85 PathProgramCache]: Analyzing trace with hash 126674436, now seen corresponding path program 1 times [2024-11-08 16:16:03,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:16:03,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813561514] [2024-11-08 16:16:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:16:03,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:16:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:16:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 8 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:09,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:16:09,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813561514] [2024-11-08 16:16:09,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813561514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:16:09,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499604498] [2024-11-08 16:16:09,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:16:09,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:16:09,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:16:09,161 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:16:09,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 16:16:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:16:13,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-08 16:16:13,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:16:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 8 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:16,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:16:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 8 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:20,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499604498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:16:20,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:16:20,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 17] total 48 [2024-11-08 16:16:20,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390103107] [2024-11-08 16:16:20,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:16:20,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 16:16:20,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:16:20,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 16:16:20,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2073, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 16:16:20,092 INFO L87 Difference]: Start difference. First operand 47234 states and 65851 transitions. Second operand has 48 states, 48 states have (on average 20.083333333333332) internal successors, (964), 48 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:16:26,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:16:26,566 INFO L93 Difference]: Finished difference Result 100155 states and 140136 transitions. [2024-11-08 16:16:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-08 16:16:26,566 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 20.083333333333332) internal successors, (964), 48 states have internal predecessors, (964), 0 states have call successors, (0), 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 326 [2024-11-08 16:16:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:16:26,611 INFO L225 Difference]: With dead ends: 100155 [2024-11-08 16:16:26,611 INFO L226 Difference]: Without dead ends: 58923 [2024-11-08 16:16:26,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2508 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1010, Invalid=8110, Unknown=0, NotChecked=0, Total=9120 [2024-11-08 16:16:26,633 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 2910 mSDsluCounter, 7537 mSDsCounter, 0 mSdLazyCounter, 7386 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2910 SdHoareTripleChecker+Valid, 7795 SdHoareTripleChecker+Invalid, 7405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 7386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:16:26,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2910 Valid, 7795 Invalid, 7405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 7386 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-08 16:16:26,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58923 states. [2024-11-08 16:16:27,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58923 to 57763. [2024-11-08 16:16:27,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57763 states, 57762 states have (on average 1.3964544163983241) internal successors, (80662), 57762 states have internal predecessors, (80662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:16:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57763 states to 57763 states and 80662 transitions. [2024-11-08 16:16:27,298 INFO L78 Accepts]: Start accepts. Automaton has 57763 states and 80662 transitions. Word has length 326 [2024-11-08 16:16:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:16:27,298 INFO L471 AbstractCegarLoop]: Abstraction has 57763 states and 80662 transitions. [2024-11-08 16:16:27,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 20.083333333333332) internal successors, (964), 48 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:16:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 57763 states and 80662 transitions. [2024-11-08 16:16:27,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-08 16:16:27,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:16:27,310 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:16:27,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-08 16:16:27,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:16:27,511 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:16:27,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:16:27,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1437669403, now seen corresponding path program 1 times [2024-11-08 16:16:27,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:16:27,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880791327] [2024-11-08 16:16:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:16:27,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:16:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:16:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 12 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:35,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:16:35,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880791327] [2024-11-08 16:16:35,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880791327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:16:35,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284286854] [2024-11-08 16:16:35,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:16:35,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:16:35,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:16:35,531 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:16:35,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 16:16:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:16:38,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-08 16:16:38,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:16:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 12 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:42,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:16:43,897 WARN L851 $PredicateComparison]: unable to prove that (and (not (= (mod |c_ULTIMATE.start_main_~var_41~0#1| 256) 0)) (= (mod |c_ULTIMATE.start_main_~input_12~0#1| 256) 0) (forall ((v_z_168 Int)) (or (< v_z_168 1) (forall ((v_y_168 Int)) (not (= (+ (* 255 v_z_168) (* 256 v_y_168)) (mod |c_ULTIMATE.start_main_~state_82~0#1| 256)))) (< 255 v_z_168)))) is different from false [2024-11-08 16:16:45,250 WARN L851 $PredicateComparison]: unable to prove that (and (not (= (mod |c_ULTIMATE.start_main_~var_41~0#1| 256) 0)) (= (mod |c_ULTIMATE.start_main_#t~bitwise74#1| 256) 0) (forall ((v_z_168 Int)) (or (< v_z_168 1) (forall ((v_y_168 Int)) (not (= (+ (* 255 v_z_168) (* 256 v_y_168)) (mod |c_ULTIMATE.start_main_~state_82~0#1| 256)))) (< 255 v_z_168)))) is different from false [2024-11-08 16:17:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 12 proven. 88 refuted. 0 times theorem prover too weak. 35 trivial. 26 not checked. [2024-11-08 16:17:18,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284286854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:17:18,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:17:18,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 20] total 58 [2024-11-08 16:17:18,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640014528] [2024-11-08 16:17:18,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:17:18,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-08 16:17:18,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:17:18,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-08 16:17:18,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2813, Unknown=9, NotChecked=218, Total=3306 [2024-11-08 16:17:18,150 INFO L87 Difference]: Start difference. First operand 57763 states and 80662 transitions. Second operand has 58 states, 58 states have (on average 15.689655172413794) internal successors, (910), 58 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:17:28,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:17:28,552 INFO L93 Difference]: Finished difference Result 150786 states and 210400 transitions. [2024-11-08 16:17:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-08 16:17:28,553 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 15.689655172413794) internal successors, (910), 58 states have internal predecessors, (910), 0 states have call successors, (0), 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 328 [2024-11-08 16:17:28,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:17:28,647 INFO L225 Difference]: With dead ends: 150786 [2024-11-08 16:17:28,647 INFO L226 Difference]: Without dead ends: 123315 [2024-11-08 16:17:28,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 619 SyntacticMatches, 6 SemanticMatches, 123 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4755 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=1790, Invalid=13215, Unknown=9, NotChecked=486, Total=15500 [2024-11-08 16:17:28,681 INFO L432 NwaCegarLoop]: 641 mSDtfsCounter, 8372 mSDsluCounter, 17454 mSDsCounter, 0 mSdLazyCounter, 7671 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8372 SdHoareTripleChecker+Valid, 18095 SdHoareTripleChecker+Invalid, 11871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 7671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4171 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:17:28,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8372 Valid, 18095 Invalid, 11871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 7671 Invalid, 0 Unknown, 4171 Unchecked, 5.8s Time] [2024-11-08 16:17:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123315 states. [2024-11-08 16:17:29,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123315 to 78626. [2024-11-08 16:17:29,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78626 states, 78625 states have (on average 1.396744038155803) internal successors, (109819), 78625 states have internal predecessors, (109819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:17:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78626 states to 78626 states and 109819 transitions. [2024-11-08 16:17:29,725 INFO L78 Accepts]: Start accepts. Automaton has 78626 states and 109819 transitions. Word has length 328 [2024-11-08 16:17:29,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:17:29,726 INFO L471 AbstractCegarLoop]: Abstraction has 78626 states and 109819 transitions. [2024-11-08 16:17:29,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 15.689655172413794) internal successors, (910), 58 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:17:29,726 INFO L276 IsEmpty]: Start isEmpty. Operand 78626 states and 109819 transitions. [2024-11-08 16:17:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-08 16:17:29,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:17:29,740 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:17:29,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 16:17:29,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:17:29,941 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:17:29,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:17:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash -789377475, now seen corresponding path program 1 times [2024-11-08 16:17:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:17:29,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689909292] [2024-11-08 16:17:29,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:17:29,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:17:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 49 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:39,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:17:39,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689909292] [2024-11-08 16:17:39,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689909292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:17:39,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029713887] [2024-11-08 16:17:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:17:39,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:17:39,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:17:39,804 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:17:39,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 16:17:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:42,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-08 16:17:42,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:17:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 18 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:46,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:17:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 12 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:54,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029713887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:17:54,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:17:54,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 22] total 71 [2024-11-08 16:17:54,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572237403] [2024-11-08 16:17:54,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:17:54,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-08 16:17:54,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:17:54,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-08 16:17:54,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=4580, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 16:17:54,619 INFO L87 Difference]: Start difference. First operand 78626 states and 109819 transitions. Second operand has 71 states, 71 states have (on average 13.647887323943662) internal successors, (969), 71 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:18:18,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:18,880 INFO L93 Difference]: Finished difference Result 336420 states and 472610 transitions. [2024-11-08 16:18:18,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2024-11-08 16:18:18,881 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 13.647887323943662) internal successors, (969), 71 states have internal predecessors, (969), 0 states have call successors, (0), 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 328 [2024-11-08 16:18:18,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:19,468 INFO L225 Difference]: With dead ends: 336420 [2024-11-08 16:18:19,468 INFO L226 Difference]: Without dead ends: 258610 [2024-11-08 16:18:19,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 615 SyntacticMatches, 1 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33619 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=8709, Invalid=82797, Unknown=0, NotChecked=0, Total=91506 [2024-11-08 16:18:19,540 INFO L432 NwaCegarLoop]: 535 mSDtfsCounter, 22368 mSDsluCounter, 23308 mSDsCounter, 0 mSdLazyCounter, 13496 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22368 SdHoareTripleChecker+Valid, 23843 SdHoareTripleChecker+Invalid, 13582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 13496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:19,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22368 Valid, 23843 Invalid, 13582 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 13496 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-11-08 16:18:19,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258610 states. [2024-11-08 16:18:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258610 to 145892. [2024-11-08 16:18:21,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145892 states, 145891 states have (on average 1.3986058084460316) internal successors, (204044), 145891 states have internal predecessors, (204044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:18:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145892 states to 145892 states and 204044 transitions. [2024-11-08 16:18:22,146 INFO L78 Accepts]: Start accepts. Automaton has 145892 states and 204044 transitions. Word has length 328 [2024-11-08 16:18:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:22,147 INFO L471 AbstractCegarLoop]: Abstraction has 145892 states and 204044 transitions. [2024-11-08 16:18:22,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 13.647887323943662) internal successors, (969), 71 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:18:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 145892 states and 204044 transitions. [2024-11-08 16:18:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-08 16:18:22,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:22,173 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:22,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-08 16:18:22,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:22,374 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:22,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:22,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1654858899, now seen corresponding path program 1 times [2024-11-08 16:18:22,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:22,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519986554] [2024-11-08 16:18:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:22,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 160 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:26,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:26,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519986554] [2024-11-08 16:18:26,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519986554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:26,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461954718] [2024-11-08 16:18:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:26,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:26,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:26,300 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:26,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 16:18:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:30,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 16:18:30,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:18:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 124 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:32,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:18:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 160 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:34,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461954718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:18:34,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:18:34,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 27 [2024-11-08 16:18:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816889637] [2024-11-08 16:18:34,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:18:34,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 16:18:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 16:18:34,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:18:34,014 INFO L87 Difference]: Start difference. First operand 145892 states and 204044 transitions. Second operand has 27 states, 27 states have (on average 28.51851851851852) internal successors, (770), 27 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:18:37,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:37,458 INFO L93 Difference]: Finished difference Result 345635 states and 486407 transitions. [2024-11-08 16:18:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 16:18:37,458 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 28.51851851851852) internal successors, (770), 27 states have internal predecessors, (770), 0 states have call successors, (0), 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 330 [2024-11-08 16:18:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:37,664 INFO L225 Difference]: With dead ends: 345635 [2024-11-08 16:18:37,664 INFO L226 Difference]: Without dead ends: 216085 [2024-11-08 16:18:37,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=378, Invalid=1692, Unknown=0, NotChecked=0, Total=2070 [2024-11-08 16:18:37,717 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 1849 mSDsluCounter, 4295 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:37,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1849 Valid, 4586 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 16:18:37,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216085 states. [2024-11-08 16:18:39,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216085 to 187244. [2024-11-08 16:18:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187244 states, 187243 states have (on average 1.4086080654550504) internal successors, (263752), 187243 states have internal predecessors, (263752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:18:40,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187244 states to 187244 states and 263752 transitions. [2024-11-08 16:18:40,335 INFO L78 Accepts]: Start accepts. Automaton has 187244 states and 263752 transitions. Word has length 330 [2024-11-08 16:18:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:40,335 INFO L471 AbstractCegarLoop]: Abstraction has 187244 states and 263752 transitions. [2024-11-08 16:18:40,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 28.51851851851852) internal successors, (770), 27 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:18:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 187244 states and 263752 transitions. [2024-11-08 16:18:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-08 16:18:40,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:40,368 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:40,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-08 16:18:40,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-11-08 16:18:40,569 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:18:40,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:40,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1527925340, now seen corresponding path program 1 times [2024-11-08 16:18:40,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:40,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208437852] [2024-11-08 16:18:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 71 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:47,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:47,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208437852] [2024-11-08 16:18:47,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208437852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:47,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586209145] [2024-11-08 16:18:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:47,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:47,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:47,557 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:47,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72f4e8d1-3e55-4cbf-a654-d07846f5d7e7/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 16:18:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:50,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 158 conjuncts are in the unsatisfiable core [2024-11-08 16:18:50,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:18:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 26 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:56,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:19:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 11 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:19:02,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586209145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:19:02,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:19:02,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 36, 30] total 78 [2024-11-08 16:19:02,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431239882] [2024-11-08 16:19:02,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:19:02,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-08 16:19:02,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:19:02,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-08 16:19:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=5537, Unknown=0, NotChecked=0, Total=6006 [2024-11-08 16:19:02,314 INFO L87 Difference]: Start difference. First operand 187244 states and 263752 transitions. Second operand has 78 states, 78 states have (on average 11.602564102564102) internal successors, (905), 78 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:19:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:19:29,785 INFO L93 Difference]: Finished difference Result 605510 states and 850096 transitions. [2024-11-08 16:19:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2024-11-08 16:19:29,785 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 11.602564102564102) internal successors, (905), 78 states have internal predecessors, (905), 0 states have call successors, (0), 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 330 [2024-11-08 16:19:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:19:30,348 INFO L225 Difference]: With dead ends: 605510 [2024-11-08 16:19:30,348 INFO L226 Difference]: Without dead ends: 447262 [2024-11-08 16:19:30,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 632 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34275 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=7419, Invalid=84087, Unknown=0, NotChecked=0, Total=91506 [2024-11-08 16:19:30,483 INFO L432 NwaCegarLoop]: 668 mSDtfsCounter, 12690 mSDsluCounter, 21731 mSDsCounter, 0 mSdLazyCounter, 9197 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12690 SdHoareTripleChecker+Valid, 22399 SdHoareTripleChecker+Invalid, 9293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 9197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:19:30,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12690 Valid, 22399 Invalid, 9293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 9197 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-08 16:19:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447262 states.