./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ccc8126940cf3f46bcb3993cc3f2567a1d57b3d9eef9ad8f60ee950111ffdfc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:46:05,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:46:05,967 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:46:05,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:46:05,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:46:05,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:46:05,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:46:06,000 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:46:06,001 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:46:06,001 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:46:06,002 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:46:06,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:46:06,003 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:46:06,004 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:46:06,004 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:46:06,005 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:46:06,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:46:06,006 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:46:06,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:46:06,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:46:06,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:46:06,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:46:06,009 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:46:06,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:46:06,010 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:46:06,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:46:06,011 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:46:06,011 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:46:06,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:46:06,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:46:06,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:46:06,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:46:06,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:46:06,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:46:06,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:46:06,014 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:46:06,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:46:06,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:46:06,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:46:06,015 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:46:06,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:46:06,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:46:06,016 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_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ccc8126940cf3f46bcb3993cc3f2567a1d57b3d9eef9ad8f60ee950111ffdfc [2023-11-29 04:46:06,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:46:06,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:46:06,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:46:06,269 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:46:06,269 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:46:06,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2023-11-29 04:46:08,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:46:09,429 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:46:09,430 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2023-11-29 04:46:09,459 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/data/0a7a7c51d/82ca526984084f0b8317608bdb978bc8/FLAG777962826 [2023-11-29 04:46:09,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/data/0a7a7c51d/82ca526984084f0b8317608bdb978bc8 [2023-11-29 04:46:09,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:46:09,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:46:09,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:46:09,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:46:09,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:46:09,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:46:09" (1/1) ... [2023-11-29 04:46:09,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a729458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:09, skipping insertion in model container [2023-11-29 04:46:09,497 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:46:09" (1/1) ... [2023-11-29 04:46:09,630 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:46:09,935 WARN L240 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_514e8e03-0954-4c92-8b54-fc6952e90c87/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[8616,8629] [2023-11-29 04:46:09,970 WARN L240 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_514e8e03-0954-4c92-8b54-fc6952e90c87/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[11433,11446] [2023-11-29 04:46:10,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:46:10,787 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:46:10,815 WARN L240 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_514e8e03-0954-4c92-8b54-fc6952e90c87/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[8616,8629] [2023-11-29 04:46:10,821 WARN L240 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_514e8e03-0954-4c92-8b54-fc6952e90c87/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[11433,11446] [2023-11-29 04:46:11,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:46:11,437 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:46:11,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11 WrapperNode [2023-11-29 04:46:11,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:46:11,439 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:46:11,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:46:11,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:46:11,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:11,509 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:11,825 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5034 [2023-11-29 04:46:11,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:46:11,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:46:11,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:46:11,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:46:11,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:11,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:11,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:12,026 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]. [2023-11-29 04:46:12,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:12,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:12,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:12,173 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:12,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:12,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:12,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:46:12,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:46:12,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:46:12,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:46:12,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (1/1) ... [2023-11-29 04:46:12,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:46:12,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:46:12,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:46:12,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:46:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:46:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:46:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:46:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:46:12,442 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:46:12,445 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:46:17,750 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:46:17,816 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:46:17,817 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 04:46:17,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:46:17 BoogieIcfgContainer [2023-11-29 04:46:17,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:46:17,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:46:17,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:46:17,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:46:17,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:46:09" (1/3) ... [2023-11-29 04:46:17,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796f99a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:46:17, skipping insertion in model container [2023-11-29 04:46:17,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:46:11" (2/3) ... [2023-11-29 04:46:17,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796f99a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:46:17, skipping insertion in model container [2023-11-29 04:46:17,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:46:17" (3/3) ... [2023-11-29 04:46:17,828 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2023-11-29 04:46:17,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:46:17,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 04:46:17,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:46:17,935 INFO L357 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, mHoare=true, 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;@47221bd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:46:17,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 04:46:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 04:46:17,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:17,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:17,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:17,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:17,962 INFO L85 PathProgramCache]: Analyzing trace with hash -915082471, now seen corresponding path program 1 times [2023-11-29 04:46:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:17,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107087109] [2023-11-29 04:46:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:17,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:18,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:18,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107087109] [2023-11-29 04:46:18,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107087109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:18,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:18,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:46:18,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481015964] [2023-11-29 04:46:18,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:18,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:46:18,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:18,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:46:18,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:46:18,227 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:18,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:18,321 INFO L93 Difference]: Finished difference Result 1613 states and 3180 transitions. [2023-11-29 04:46:18,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:46:18,324 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 04:46:18,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:18,344 INFO L225 Difference]: With dead ends: 1613 [2023-11-29 04:46:18,345 INFO L226 Difference]: Without dead ends: 816 [2023-11-29 04:46:18,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:46:18,355 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:18,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1545 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:18,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-29 04:46:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-11-29 04:46:18,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-11-29 04:46:18,434 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-11-29 04:46:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:18,435 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-11-29 04:46:18,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-11-29 04:46:18,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 04:46:18,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:18,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:18,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:46:18,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:18,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:18,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2100021147, now seen corresponding path program 1 times [2023-11-29 04:46:18,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:18,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962434904] [2023-11-29 04:46:18,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:18,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:18,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:18,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962434904] [2023-11-29 04:46:18,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962434904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:18,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:18,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:46:18,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651747099] [2023-11-29 04:46:18,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:18,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:46:18,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:46:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:46:18,654 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:18,750 INFO L93 Difference]: Finished difference Result 889 states and 1660 transitions. [2023-11-29 04:46:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:46:18,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 04:46:18,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:18,756 INFO L225 Difference]: With dead ends: 889 [2023-11-29 04:46:18,756 INFO L226 Difference]: Without dead ends: 851 [2023-11-29 04:46:18,757 INFO L412 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 [2023-11-29 04:46:18,758 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 55 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:18,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4592 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:18,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-11-29 04:46:18,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 816. [2023-11-29 04:46:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-11-29 04:46:18,781 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-11-29 04:46:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:18,781 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-11-29 04:46:18,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:18,782 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-11-29 04:46:18,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 04:46:18,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:18,783 INFO L195 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] [2023-11-29 04:46:18,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:46:18,783 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:18,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:18,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1342881082, now seen corresponding path program 1 times [2023-11-29 04:46:18,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:18,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218363546] [2023-11-29 04:46:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:18,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:18,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218363546] [2023-11-29 04:46:18,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218363546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:18,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:18,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:46:18,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120247864] [2023-11-29 04:46:18,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:18,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:46:18,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:18,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:46:18,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:18,841 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:22,219 INFO L93 Difference]: Finished difference Result 2320 states and 4395 transitions. [2023-11-29 04:46:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:46:22,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-29 04:46:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:22,231 INFO L225 Difference]: With dead ends: 2320 [2023-11-29 04:46:22,231 INFO L226 Difference]: Without dead ends: 1567 [2023-11-29 04:46:22,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:22,234 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 878 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:22,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 508 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 04:46:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2023-11-29 04:46:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1567. [2023-11-29 04:46:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1565 states have (on average 1.6287539936102235) internal successors, (2549), 1566 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2549 transitions. [2023-11-29 04:46:22,271 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2549 transitions. Word has length 23 [2023-11-29 04:46:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:22,271 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2549 transitions. [2023-11-29 04:46:22,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:22,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2549 transitions. [2023-11-29 04:46:22,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 04:46:22,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:22,274 INFO L195 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] [2023-11-29 04:46:22,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:46:22,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:22,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:22,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1286109718, now seen corresponding path program 1 times [2023-11-29 04:46:22,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:22,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690192787] [2023-11-29 04:46:22,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:22,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:22,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:22,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690192787] [2023-11-29 04:46:22,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690192787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:22,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:22,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:46:22,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064550370] [2023-11-29 04:46:22,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:22,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:46:22,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:46:22,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:46:22,399 INFO L87 Difference]: Start difference. First operand 1567 states and 2549 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:22,617 INFO L93 Difference]: Finished difference Result 1847 states and 2997 transitions. [2023-11-29 04:46:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:46:22,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-29 04:46:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:22,630 INFO L225 Difference]: With dead ends: 1847 [2023-11-29 04:46:22,630 INFO L226 Difference]: Without dead ends: 1812 [2023-11-29 04:46:22,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:46:22,632 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:22,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:46:22,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2023-11-29 04:46:22,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1600. [2023-11-29 04:46:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1598 states have (on average 1.62828535669587) internal successors, (2602), 1599 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2602 transitions. [2023-11-29 04:46:22,678 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2602 transitions. Word has length 41 [2023-11-29 04:46:22,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:22,679 INFO L495 AbstractCegarLoop]: Abstraction has 1600 states and 2602 transitions. [2023-11-29 04:46:22,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2602 transitions. [2023-11-29 04:46:22,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 04:46:22,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:22,681 INFO L195 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] [2023-11-29 04:46:22,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:46:22,682 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:22,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:22,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1122752986, now seen corresponding path program 1 times [2023-11-29 04:46:22,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:22,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650530157] [2023-11-29 04:46:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:22,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:22,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:22,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650530157] [2023-11-29 04:46:22,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650530157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:22,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:22,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:46:22,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432484531] [2023-11-29 04:46:22,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:22,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:46:22,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:46:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:22,752 INFO L87 Difference]: Start difference. First operand 1600 states and 2602 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:22,804 INFO L93 Difference]: Finished difference Result 1725 states and 2801 transitions. [2023-11-29 04:46:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:46:22,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-29 04:46:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:22,816 INFO L225 Difference]: With dead ends: 1725 [2023-11-29 04:46:22,816 INFO L226 Difference]: Without dead ends: 1657 [2023-11-29 04:46:22,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:22,819 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:22,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-11-29 04:46:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1655. [2023-11-29 04:46:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1653 states have (on average 1.6261343012704175) internal successors, (2688), 1654 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2688 transitions. [2023-11-29 04:46:22,866 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2688 transitions. Word has length 43 [2023-11-29 04:46:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:22,866 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2688 transitions. [2023-11-29 04:46:22,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2688 transitions. [2023-11-29 04:46:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 04:46:22,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:22,869 INFO L195 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] [2023-11-29 04:46:22,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:46:22,870 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:22,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:22,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1120608034, now seen corresponding path program 1 times [2023-11-29 04:46:22,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:22,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673362304] [2023-11-29 04:46:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:22,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:23,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:23,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673362304] [2023-11-29 04:46:23,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673362304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:23,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:23,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:46:23,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476052099] [2023-11-29 04:46:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:23,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:46:23,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:23,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:46:23,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:46:23,085 INFO L87 Difference]: Start difference. First operand 1655 states and 2688 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:23,261 INFO L93 Difference]: Finished difference Result 1780 states and 2884 transitions. [2023-11-29 04:46:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:46:23,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-29 04:46:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:23,272 INFO L225 Difference]: With dead ends: 1780 [2023-11-29 04:46:23,272 INFO L226 Difference]: Without dead ends: 1657 [2023-11-29 04:46:23,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:46:23,274 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1488 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:23,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1719 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:46:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-11-29 04:46:23,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1655. [2023-11-29 04:46:23,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1653 states have (on average 1.6249243799153055) internal successors, (2686), 1654 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2686 transitions. [2023-11-29 04:46:23,321 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2686 transitions. Word has length 43 [2023-11-29 04:46:23,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:23,322 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2686 transitions. [2023-11-29 04:46:23,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2686 transitions. [2023-11-29 04:46:23,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 04:46:23,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:23,324 INFO L195 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] [2023-11-29 04:46:23,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:46:23,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:23,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:23,325 INFO L85 PathProgramCache]: Analyzing trace with hash -507494279, now seen corresponding path program 1 times [2023-11-29 04:46:23,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:23,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958196265] [2023-11-29 04:46:23,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:23,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958196265] [2023-11-29 04:46:23,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958196265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:23,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:23,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:46:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821654236] [2023-11-29 04:46:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:23,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:46:23,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:46:23,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:46:23,498 INFO L87 Difference]: Start difference. First operand 1655 states and 2686 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:23,560 INFO L93 Difference]: Finished difference Result 1663 states and 2695 transitions. [2023-11-29 04:46:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:46:23,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-11-29 04:46:23,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:23,572 INFO L225 Difference]: With dead ends: 1663 [2023-11-29 04:46:23,572 INFO L226 Difference]: Without dead ends: 1661 [2023-11-29 04:46:23,573 INFO L412 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 [2023-11-29 04:46:23,574 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:23,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:23,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2023-11-29 04:46:23,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1659. [2023-11-29 04:46:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1657 states have (on average 1.6228123114061557) internal successors, (2689), 1658 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2689 transitions. [2023-11-29 04:46:23,622 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2689 transitions. Word has length 44 [2023-11-29 04:46:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:23,622 INFO L495 AbstractCegarLoop]: Abstraction has 1659 states and 2689 transitions. [2023-11-29 04:46:23,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2689 transitions. [2023-11-29 04:46:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 04:46:23,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:23,624 INFO L195 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] [2023-11-29 04:46:23,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:46:23,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:23,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:23,625 INFO L85 PathProgramCache]: Analyzing trace with hash 106173278, now seen corresponding path program 1 times [2023-11-29 04:46:23,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:23,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036548252] [2023-11-29 04:46:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:23,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:23,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:23,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036548252] [2023-11-29 04:46:23,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036548252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:23,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:23,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:46:23,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602148268] [2023-11-29 04:46:23,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:23,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:46:23,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:23,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:46:23,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:23,678 INFO L87 Difference]: Start difference. First operand 1659 states and 2689 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:23,727 INFO L93 Difference]: Finished difference Result 1797 states and 2902 transitions. [2023-11-29 04:46:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:46:23,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-11-29 04:46:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:23,741 INFO L225 Difference]: With dead ends: 1797 [2023-11-29 04:46:23,741 INFO L226 Difference]: Without dead ends: 1725 [2023-11-29 04:46:23,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:23,743 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:23,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:23,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2023-11-29 04:46:23,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1723. [2023-11-29 04:46:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1721 states have (on average 1.6188262638001163) internal successors, (2786), 1722 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2786 transitions. [2023-11-29 04:46:23,802 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2786 transitions. Word has length 45 [2023-11-29 04:46:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:23,802 INFO L495 AbstractCegarLoop]: Abstraction has 1723 states and 2786 transitions. [2023-11-29 04:46:23,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2786 transitions. [2023-11-29 04:46:23,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 04:46:23,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:23,804 INFO L195 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] [2023-11-29 04:46:23,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:46:23,804 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:23,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:23,805 INFO L85 PathProgramCache]: Analyzing trace with hash -479538850, now seen corresponding path program 1 times [2023-11-29 04:46:23,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:23,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484234954] [2023-11-29 04:46:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:23,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:23,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484234954] [2023-11-29 04:46:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484234954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:23,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:23,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:46:23,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389414507] [2023-11-29 04:46:23,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:23,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:46:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:46:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:23,861 INFO L87 Difference]: Start difference. First operand 1723 states and 2786 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:23,914 INFO L93 Difference]: Finished difference Result 2077 states and 3326 transitions. [2023-11-29 04:46:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:46:23,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-11-29 04:46:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:23,927 INFO L225 Difference]: With dead ends: 2077 [2023-11-29 04:46:23,927 INFO L226 Difference]: Without dead ends: 1888 [2023-11-29 04:46:23,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:23,929 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:23,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:23,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2023-11-29 04:46:23,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1886. [2023-11-29 04:46:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1884 states have (on average 1.6072186836518048) internal successors, (3028), 1885 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 3028 transitions. [2023-11-29 04:46:23,984 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 3028 transitions. Word has length 45 [2023-11-29 04:46:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:23,984 INFO L495 AbstractCegarLoop]: Abstraction has 1886 states and 3028 transitions. [2023-11-29 04:46:23,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 3028 transitions. [2023-11-29 04:46:23,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 04:46:23,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:23,985 INFO L195 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] [2023-11-29 04:46:23,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:46:23,985 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:23,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:23,986 INFO L85 PathProgramCache]: Analyzing trace with hash 409194590, now seen corresponding path program 1 times [2023-11-29 04:46:23,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:23,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579847290] [2023-11-29 04:46:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:23,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:24,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:24,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579847290] [2023-11-29 04:46:24,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579847290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:24,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:24,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:46:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830936626] [2023-11-29 04:46:24,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:24,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:46:24,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:24,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:46:24,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:24,038 INFO L87 Difference]: Start difference. First operand 1886 states and 3028 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:24,121 INFO L93 Difference]: Finished difference Result 2542 states and 4010 transitions. [2023-11-29 04:46:24,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:46:24,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-11-29 04:46:24,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:24,134 INFO L225 Difference]: With dead ends: 2542 [2023-11-29 04:46:24,134 INFO L226 Difference]: Without dead ends: 2190 [2023-11-29 04:46:24,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:24,137 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:24,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2023-11-29 04:46:24,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 2188. [2023-11-29 04:46:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2186 states have (on average 1.584629460201281) internal successors, (3464), 2187 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3464 transitions. [2023-11-29 04:46:24,222 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3464 transitions. Word has length 45 [2023-11-29 04:46:24,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:24,223 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3464 transitions. [2023-11-29 04:46:24,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:24,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3464 transitions. [2023-11-29 04:46:24,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 04:46:24,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:24,224 INFO L195 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] [2023-11-29 04:46:24,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:46:24,225 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:24,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash 146117214, now seen corresponding path program 1 times [2023-11-29 04:46:24,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:24,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709468612] [2023-11-29 04:46:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:24,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:24,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:24,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709468612] [2023-11-29 04:46:24,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709468612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:24,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:24,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:46:24,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951225046] [2023-11-29 04:46:24,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:24,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:46:24,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:24,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:46:24,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:24,285 INFO L87 Difference]: Start difference. First operand 2188 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:24,378 INFO L93 Difference]: Finished difference Result 3400 states and 5234 transitions. [2023-11-29 04:46:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:46:24,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-11-29 04:46:24,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:24,396 INFO L225 Difference]: With dead ends: 3400 [2023-11-29 04:46:24,396 INFO L226 Difference]: Without dead ends: 2746 [2023-11-29 04:46:24,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:24,399 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:24,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2023-11-29 04:46:24,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2744. [2023-11-29 04:46:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2742 states have (on average 1.5463165572574762) internal successors, (4240), 2743 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4240 transitions. [2023-11-29 04:46:24,525 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4240 transitions. Word has length 45 [2023-11-29 04:46:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:24,525 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4240 transitions. [2023-11-29 04:46:24,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4240 transitions. [2023-11-29 04:46:24,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 04:46:24,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:24,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:24,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:46:24,528 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:24,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:24,528 INFO L85 PathProgramCache]: Analyzing trace with hash -879880138, now seen corresponding path program 1 times [2023-11-29 04:46:24,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:24,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501421863] [2023-11-29 04:46:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:24,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:46:24,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:24,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501421863] [2023-11-29 04:46:24,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501421863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:24,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:24,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:46:24,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953597209] [2023-11-29 04:46:24,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:24,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:46:24,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:46:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:46:24,689 INFO L87 Difference]: Start difference. First operand 2744 states and 4240 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:24,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:24,949 INFO L93 Difference]: Finished difference Result 7506 states and 11101 transitions. [2023-11-29 04:46:24,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:46:24,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 04:46:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:24,985 INFO L225 Difference]: With dead ends: 7506 [2023-11-29 04:46:24,985 INFO L226 Difference]: Without dead ends: 6640 [2023-11-29 04:46:24,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:46:24,990 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4635 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:24,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 3299 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:46:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2023-11-29 04:46:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3784. [2023-11-29 04:46:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3782 states have (on average 1.5124272871496562) internal successors, (5720), 3783 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:25,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5720 transitions. [2023-11-29 04:46:25,127 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5720 transitions. Word has length 61 [2023-11-29 04:46:25,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:25,127 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 5720 transitions. [2023-11-29 04:46:25,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:25,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5720 transitions. [2023-11-29 04:46:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 04:46:25,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:25,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:25,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:46:25,129 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:25,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1465592266, now seen corresponding path program 1 times [2023-11-29 04:46:25,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:25,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493650219] [2023-11-29 04:46:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:25,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:46:25,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:25,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493650219] [2023-11-29 04:46:25,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493650219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:25,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:25,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:46:25,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357248774] [2023-11-29 04:46:25,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:25,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:46:25,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:25,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:46:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:46:25,242 INFO L87 Difference]: Start difference. First operand 3784 states and 5720 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:25,481 INFO L93 Difference]: Finished difference Result 8714 states and 12829 transitions. [2023-11-29 04:46:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:46:25,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 04:46:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:25,500 INFO L225 Difference]: With dead ends: 8714 [2023-11-29 04:46:25,500 INFO L226 Difference]: Without dead ends: 7504 [2023-11-29 04:46:25,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:46:25,504 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4670 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:25,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4670 Valid, 3317 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:46:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2023-11-29 04:46:25,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 5424. [2023-11-29 04:46:25,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5422 states have (on average 1.484323127997049) internal successors, (8048), 5423 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8048 transitions. [2023-11-29 04:46:25,715 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8048 transitions. Word has length 61 [2023-11-29 04:46:25,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:25,715 INFO L495 AbstractCegarLoop]: Abstraction has 5424 states and 8048 transitions. [2023-11-29 04:46:25,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:25,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8048 transitions. [2023-11-29 04:46:25,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 04:46:25,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:25,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:25,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:46:25,718 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:25,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:25,718 INFO L85 PathProgramCache]: Analyzing trace with hash -576858826, now seen corresponding path program 1 times [2023-11-29 04:46:25,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:25,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350046747] [2023-11-29 04:46:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:25,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 04:46:25,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:25,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350046747] [2023-11-29 04:46:25,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350046747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:25,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:25,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:46:25,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48818549] [2023-11-29 04:46:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:25,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:46:25,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:46:25,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:46:25,822 INFO L87 Difference]: Start difference. First operand 5424 states and 8048 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:26,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:26,078 INFO L93 Difference]: Finished difference Result 9922 states and 14549 transitions. [2023-11-29 04:46:26,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:46:26,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 04:46:26,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:26,091 INFO L225 Difference]: With dead ends: 9922 [2023-11-29 04:46:26,091 INFO L226 Difference]: Without dead ends: 8712 [2023-11-29 04:46:26,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:46:26,095 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:26,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:46:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8712 states. [2023-11-29 04:46:26,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8712 to 6632. [2023-11-29 04:46:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6630 states have (on average 1.4733031674208146) internal successors, (9768), 6631 states have internal predecessors, (9768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 9768 transitions. [2023-11-29 04:46:26,299 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 9768 transitions. Word has length 61 [2023-11-29 04:46:26,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:26,299 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 9768 transitions. [2023-11-29 04:46:26,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:26,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 9768 transitions. [2023-11-29 04:46:26,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 04:46:26,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:26,302 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:26,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:46:26,302 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:26,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:26,303 INFO L85 PathProgramCache]: Analyzing trace with hash -839936202, now seen corresponding path program 1 times [2023-11-29 04:46:26,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:26,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405435874] [2023-11-29 04:46:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:26,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:46:26,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:26,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405435874] [2023-11-29 04:46:26,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405435874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:26,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:26,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:46:26,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446734427] [2023-11-29 04:46:26,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:26,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:46:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:26,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:46:26,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:46:26,412 INFO L87 Difference]: Start difference. First operand 6632 states and 9768 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:26,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:26,678 INFO L93 Difference]: Finished difference Result 11130 states and 16269 transitions. [2023-11-29 04:46:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:46:26,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-29 04:46:26,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:26,723 INFO L225 Difference]: With dead ends: 11130 [2023-11-29 04:46:26,723 INFO L226 Difference]: Without dead ends: 9920 [2023-11-29 04:46:26,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:46:26,726 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4639 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:26,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 3339 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:46:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2023-11-29 04:46:26,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 7840. [2023-11-29 04:46:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.4656800204133709) internal successors, (11488), 7839 states have internal predecessors, (11488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11488 transitions. [2023-11-29 04:46:26,941 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11488 transitions. Word has length 61 [2023-11-29 04:46:26,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:26,941 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11488 transitions. [2023-11-29 04:46:26,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:26,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11488 transitions. [2023-11-29 04:46:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 04:46:26,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:26,943 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:26,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:46:26,944 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:26,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash -593577456, now seen corresponding path program 1 times [2023-11-29 04:46:26,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:26,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928837069] [2023-11-29 04:46:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:26,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:27,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:27,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928837069] [2023-11-29 04:46:27,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928837069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:27,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:27,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:46:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807326235] [2023-11-29 04:46:27,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:27,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:46:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:27,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:46:27,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:27,029 INFO L87 Difference]: Start difference. First operand 7840 states and 11488 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:27,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:27,181 INFO L93 Difference]: Finished difference Result 14148 states and 20482 transitions. [2023-11-29 04:46:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:46:27,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 04:46:27,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:27,193 INFO L225 Difference]: With dead ends: 14148 [2023-11-29 04:46:27,194 INFO L226 Difference]: Without dead ends: 7842 [2023-11-29 04:46:27,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:27,202 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:27,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:27,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2023-11-29 04:46:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7840. [2023-11-29 04:46:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.44985965807604) internal successors, (11364), 7839 states have internal predecessors, (11364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11364 transitions. [2023-11-29 04:46:27,412 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11364 transitions. Word has length 62 [2023-11-29 04:46:27,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:27,412 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11364 transitions. [2023-11-29 04:46:27,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:27,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11364 transitions. [2023-11-29 04:46:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 04:46:27,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:27,414 INFO L195 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] [2023-11-29 04:46:27,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:46:27,414 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:27,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:27,414 INFO L85 PathProgramCache]: Analyzing trace with hash 153695742, now seen corresponding path program 1 times [2023-11-29 04:46:27,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:27,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564291285] [2023-11-29 04:46:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:27,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564291285] [2023-11-29 04:46:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564291285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:46:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55308841] [2023-11-29 04:46:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:27,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:46:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:27,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:46:27,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:27,492 INFO L87 Difference]: Start difference. First operand 7840 states and 11364 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:27,643 INFO L93 Difference]: Finished difference Result 10236 states and 14771 transitions. [2023-11-29 04:46:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:46:27,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-29 04:46:27,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:27,650 INFO L225 Difference]: With dead ends: 10236 [2023-11-29 04:46:27,650 INFO L226 Difference]: Without dead ends: 3930 [2023-11-29 04:46:27,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:27,656 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:27,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-11-29 04:46:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2023-11-29 04:46:27,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3921 states have (on average 1.4922213720989543) internal successors, (5851), 3922 states have internal predecessors, (5851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 5851 transitions. [2023-11-29 04:46:27,773 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 5851 transitions. Word has length 63 [2023-11-29 04:46:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:27,773 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 5851 transitions. [2023-11-29 04:46:27,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 5851 transitions. [2023-11-29 04:46:27,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 04:46:27,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:27,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:27,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:46:27,775 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:27,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:27,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1807172254, now seen corresponding path program 1 times [2023-11-29 04:46:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260352092] [2023-11-29 04:46:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:27,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:27,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260352092] [2023-11-29 04:46:27,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260352092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:27,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:27,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:46:27,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878633110] [2023-11-29 04:46:27,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:27,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:46:27,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:27,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:46:27,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:27,866 INFO L87 Difference]: Start difference. First operand 3923 states and 5851 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:27,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:27,935 INFO L93 Difference]: Finished difference Result 5115 states and 7525 transitions. [2023-11-29 04:46:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:46:27,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-29 04:46:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:27,940 INFO L225 Difference]: With dead ends: 5115 [2023-11-29 04:46:27,940 INFO L226 Difference]: Without dead ends: 2737 [2023-11-29 04:46:27,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:27,944 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:27,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-11-29 04:46:28,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2023-11-29 04:46:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2733 states have (on average 1.5210391511159898) internal successors, (4157), 2734 states have internal predecessors, (4157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4157 transitions. [2023-11-29 04:46:28,010 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4157 transitions. Word has length 64 [2023-11-29 04:46:28,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:28,010 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4157 transitions. [2023-11-29 04:46:28,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:28,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4157 transitions. [2023-11-29 04:46:28,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 04:46:28,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:28,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:28,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 04:46:28,013 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:28,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1518156628, now seen corresponding path program 1 times [2023-11-29 04:46:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:28,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196114263] [2023-11-29 04:46:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:28,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:28,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196114263] [2023-11-29 04:46:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196114263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:28,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:28,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:46:28,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246301774] [2023-11-29 04:46:28,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:28,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:46:28,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:28,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:46:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:28,093 INFO L87 Difference]: Start difference. First operand 2735 states and 4157 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:28,129 INFO L93 Difference]: Finished difference Result 3333 states and 4984 transitions. [2023-11-29 04:46:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:46:28,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-29 04:46:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:28,134 INFO L225 Difference]: With dead ends: 3333 [2023-11-29 04:46:28,134 INFO L226 Difference]: Without dead ends: 2143 [2023-11-29 04:46:28,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:46:28,137 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:28,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:46:28,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-11-29 04:46:28,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2023-11-29 04:46:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2139 states have (on average 1.5525946704067322) internal successors, (3321), 2140 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3321 transitions. [2023-11-29 04:46:28,181 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3321 transitions. Word has length 66 [2023-11-29 04:46:28,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:28,181 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3321 transitions. [2023-11-29 04:46:28,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3321 transitions. [2023-11-29 04:46:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 04:46:28,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:28,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:28,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 04:46:28,183 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:28,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:28,183 INFO L85 PathProgramCache]: Analyzing trace with hash 312352826, now seen corresponding path program 1 times [2023-11-29 04:46:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:28,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474799611] [2023-11-29 04:46:28,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:28,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:29,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:29,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474799611] [2023-11-29 04:46:29,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474799611] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:46:29,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237764787] [2023-11-29 04:46:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:29,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:46:29,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:46:29,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:46:29,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:46:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:30,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:46:30,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:46:30,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:46:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:46:30,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237764787] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:46:30,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:46:30,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 04:46:30,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390486776] [2023-11-29 04:46:30,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:46:30,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 04:46:30,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 04:46:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:46:30,623 INFO L87 Difference]: Start difference. First operand 2141 states and 3321 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:33,280 INFO L93 Difference]: Finished difference Result 6296 states and 8814 transitions. [2023-11-29 04:46:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 04:46:33,280 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 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 68 [2023-11-29 04:46:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:33,289 INFO L225 Difference]: With dead ends: 6296 [2023-11-29 04:46:33,290 INFO L226 Difference]: Without dead ends: 5700 [2023-11-29 04:46:33,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 04:46:33,293 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 10018 mSDsluCounter, 6292 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10018 SdHoareTripleChecker+Valid, 7794 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:33,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10018 Valid, 7794 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:46:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2023-11-29 04:46:33,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5372. [2023-11-29 04:46:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5370 states have (on average 1.3871508379888269) internal successors, (7449), 5371 states have internal predecessors, (7449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:33,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7449 transitions. [2023-11-29 04:46:33,508 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7449 transitions. Word has length 68 [2023-11-29 04:46:33,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:33,509 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 7449 transitions. [2023-11-29 04:46:33,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7449 transitions. [2023-11-29 04:46:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 04:46:33,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:33,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:33,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:46:33,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:46:33,711 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:33,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash 424413204, now seen corresponding path program 1 times [2023-11-29 04:46:33,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:33,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632756229] [2023-11-29 04:46:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:33,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:35,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:35,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632756229] [2023-11-29 04:46:35,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632756229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:46:35,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947412657] [2023-11-29 04:46:35,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:35,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:46:35,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:46:35,492 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:46:35,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:46:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:35,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:46:35,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:36,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:36,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:46:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:37,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947412657] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:46:37,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:46:37,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-11-29 04:46:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37313883] [2023-11-29 04:46:37,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:46:37,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 04:46:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:37,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 04:46:37,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 04:46:37,421 INFO L87 Difference]: Start difference. First operand 5372 states and 7449 transitions. Second operand has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:40,817 INFO L93 Difference]: Finished difference Result 19899 states and 26193 transitions. [2023-11-29 04:46:40,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 04:46:40,817 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 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 69 [2023-11-29 04:46:40,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:40,841 INFO L225 Difference]: With dead ends: 19899 [2023-11-29 04:46:40,841 INFO L226 Difference]: Without dead ends: 16209 [2023-11-29 04:46:40,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1203, Invalid=5277, Unknown=0, NotChecked=0, Total=6480 [2023-11-29 04:46:40,848 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 23081 mSDsluCounter, 9434 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23081 SdHoareTripleChecker+Valid, 10932 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:40,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23081 Valid, 10932 Invalid, 1213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:46:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16209 states. [2023-11-29 04:46:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16209 to 14521. [2023-11-29 04:46:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14521 states, 14519 states have (on average 1.319512363110407) internal successors, (19158), 14520 states have internal predecessors, (19158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14521 states to 14521 states and 19158 transitions. [2023-11-29 04:46:41,298 INFO L78 Accepts]: Start accepts. Automaton has 14521 states and 19158 transitions. Word has length 69 [2023-11-29 04:46:41,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:41,298 INFO L495 AbstractCegarLoop]: Abstraction has 14521 states and 19158 transitions. [2023-11-29 04:46:41,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.5) internal successors, (187), 34 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:41,299 INFO L276 IsEmpty]: Start isEmpty. Operand 14521 states and 19158 transitions. [2023-11-29 04:46:41,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 04:46:41,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:41,300 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:41,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:46:41,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:46:41,501 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:41,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash 103866210, now seen corresponding path program 1 times [2023-11-29 04:46:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:41,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707886708] [2023-11-29 04:46:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:41,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:41,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:41,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707886708] [2023-11-29 04:46:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707886708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:46:41,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384608534] [2023-11-29 04:46:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:41,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:46:41,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:46:41,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:46:41,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:46:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:41,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:46:41,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:42,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:46:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:43,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384608534] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:46:43,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:46:43,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-11-29 04:46:43,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523397151] [2023-11-29 04:46:43,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:46:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 04:46:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 04:46:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:46:43,528 INFO L87 Difference]: Start difference. First operand 14521 states and 19158 transitions. Second operand has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:46,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:46,226 INFO L93 Difference]: Finished difference Result 40651 states and 52181 transitions. [2023-11-29 04:46:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 04:46:46,227 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 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 69 [2023-11-29 04:46:46,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:46,259 INFO L225 Difference]: With dead ends: 40651 [2023-11-29 04:46:46,260 INFO L226 Difference]: Without dead ends: 28103 [2023-11-29 04:46:46,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1196, Invalid=4810, Unknown=0, NotChecked=0, Total=6006 [2023-11-29 04:46:46,278 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 14514 mSDsluCounter, 8003 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14514 SdHoareTripleChecker+Valid, 9505 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:46,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14514 Valid, 9505 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:46:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28103 states. [2023-11-29 04:46:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28103 to 21817. [2023-11-29 04:46:47,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21817 states, 21815 states have (on average 1.287508595003438) internal successors, (28087), 21816 states have internal predecessors, (28087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21817 states to 21817 states and 28087 transitions. [2023-11-29 04:46:47,337 INFO L78 Accepts]: Start accepts. Automaton has 21817 states and 28087 transitions. Word has length 69 [2023-11-29 04:46:47,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:47,337 INFO L495 AbstractCegarLoop]: Abstraction has 21817 states and 28087 transitions. [2023-11-29 04:46:47,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:47,337 INFO L276 IsEmpty]: Start isEmpty. Operand 21817 states and 28087 transitions. [2023-11-29 04:46:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 04:46:47,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:47,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:47,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:46:47,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:46:47,540 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:47,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:47,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1578698104, now seen corresponding path program 1 times [2023-11-29 04:46:47,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:47,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376933101] [2023-11-29 04:46:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:47,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:48,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:48,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376933101] [2023-11-29 04:46:48,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376933101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:46:48,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562010638] [2023-11-29 04:46:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:48,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:46:48,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:46:48,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:46:48,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:46:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:48,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:46:48,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:48,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:46:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:50,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562010638] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:46:50,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:46:50,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 30 [2023-11-29 04:46:50,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113488072] [2023-11-29 04:46:50,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:46:50,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 04:46:50,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:46:50,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 04:46:50,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:46:50,205 INFO L87 Difference]: Start difference. First operand 21817 states and 28087 transitions. Second operand has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:54,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:54,537 INFO L93 Difference]: Finished difference Result 62024 states and 77699 transitions. [2023-11-29 04:46:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 04:46:54,537 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 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 70 [2023-11-29 04:46:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:54,571 INFO L225 Difference]: With dead ends: 62024 [2023-11-29 04:46:54,572 INFO L226 Difference]: Without dead ends: 43265 [2023-11-29 04:46:54,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1092, Invalid=5228, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 04:46:54,590 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 18627 mSDsluCounter, 16587 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18627 SdHoareTripleChecker+Valid, 18083 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:54,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18627 Valid, 18083 Invalid, 1121 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:46:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43265 states. [2023-11-29 04:46:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43265 to 35253. [2023-11-29 04:46:56,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35253 states, 35251 states have (on average 1.2567303055232475) internal successors, (44301), 35252 states have internal predecessors, (44301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35253 states to 35253 states and 44301 transitions. [2023-11-29 04:46:56,096 INFO L78 Accepts]: Start accepts. Automaton has 35253 states and 44301 transitions. Word has length 70 [2023-11-29 04:46:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:56,096 INFO L495 AbstractCegarLoop]: Abstraction has 35253 states and 44301 transitions. [2023-11-29 04:46:56,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:46:56,096 INFO L276 IsEmpty]: Start isEmpty. Operand 35253 states and 44301 transitions. [2023-11-29 04:46:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 04:46:56,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:56,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:46:56,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:46:56,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:46:56,299 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:46:56,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:56,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2129294422, now seen corresponding path program 1 times [2023-11-29 04:46:56,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:46:56,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637346673] [2023-11-29 04:46:56,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:46:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:56,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:46:56,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637346673] [2023-11-29 04:46:56,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637346673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:46:56,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766536823] [2023-11-29 04:46:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:56,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:46:56,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:46:56,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:46:56,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:46:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:57,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 04:46:57,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:46:58,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:47:00,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:47:00,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766536823] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:47:00,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:47:00,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 19] total 44 [2023-11-29 04:47:00,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279453983] [2023-11-29 04:47:00,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:47:00,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 04:47:00,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:47:00,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 04:47:00,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 04:47:00,963 INFO L87 Difference]: Start difference. First operand 35253 states and 44301 transitions. Second operand has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:47:16,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:47:16,997 INFO L93 Difference]: Finished difference Result 91691 states and 115413 transitions. [2023-11-29 04:47:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-11-29 04:47:16,997 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 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 71 [2023-11-29 04:47:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:47:17,064 INFO L225 Difference]: With dead ends: 91691 [2023-11-29 04:47:17,064 INFO L226 Difference]: Without dead ends: 78325 [2023-11-29 04:47:17,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=4162, Invalid=18790, Unknown=0, NotChecked=0, Total=22952 [2023-11-29 04:47:17,089 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 22077 mSDsluCounter, 20856 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22077 SdHoareTripleChecker+Valid, 22422 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:47:17,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22077 Valid, 22422 Invalid, 2322 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 04:47:17,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78325 states. [2023-11-29 04:47:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78325 to 31137. [2023-11-29 04:47:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31137 states, 31135 states have (on average 1.256142604785611) internal successors, (39110), 31136 states have internal predecessors, (39110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:47:18,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31137 states to 31137 states and 39110 transitions. [2023-11-29 04:47:18,723 INFO L78 Accepts]: Start accepts. Automaton has 31137 states and 39110 transitions. Word has length 71 [2023-11-29 04:47:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:47:18,723 INFO L495 AbstractCegarLoop]: Abstraction has 31137 states and 39110 transitions. [2023-11-29 04:47:18,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.159090909090909) internal successors, (183), 44 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:47:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 31137 states and 39110 transitions. [2023-11-29 04:47:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 04:47:18,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:47:18,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:47:18,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 04:47:18,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:47:18,926 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:47:18,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:47:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash 387450162, now seen corresponding path program 1 times [2023-11-29 04:47:18,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:47:18,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320885653] [2023-11-29 04:47:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:47:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:47:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:47:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:47:19,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:47:19,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320885653] [2023-11-29 04:47:19,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320885653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:47:19,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891960285] [2023-11-29 04:47:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:47:19,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:47:19,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:47:19,630 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:47:19,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:47:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:47:19,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:47:19,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:47:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:47:20,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:47:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:47:22,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891960285] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:47:22,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:47:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 33 [2023-11-29 04:47:22,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380481222] [2023-11-29 04:47:22,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:47:22,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 04:47:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:47:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 04:47:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 04:47:22,132 INFO L87 Difference]: Start difference. First operand 31137 states and 39110 transitions. Second operand has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:47:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:47:24,385 INFO L93 Difference]: Finished difference Result 43705 states and 54122 transitions. [2023-11-29 04:47:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 04:47:24,386 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-29 04:47:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:47:24,407 INFO L225 Difference]: With dead ends: 43705 [2023-11-29 04:47:24,407 INFO L226 Difference]: Without dead ends: 30337 [2023-11-29 04:47:24,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=467, Invalid=1885, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 04:47:24,415 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 7981 mSDsluCounter, 12140 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7981 SdHoareTripleChecker+Valid, 13634 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:47:24,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7981 Valid, 13634 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:47:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30337 states. [2023-11-29 04:47:25,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30337 to 25828. [2023-11-29 04:47:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25828 states, 25826 states have (on average 1.2583055835204833) internal successors, (32497), 25827 states have internal predecessors, (32497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:47:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25828 states to 25828 states and 32497 transitions. [2023-11-29 04:47:25,678 INFO L78 Accepts]: Start accepts. Automaton has 25828 states and 32497 transitions. Word has length 71 [2023-11-29 04:47:25,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:47:25,678 INFO L495 AbstractCegarLoop]: Abstraction has 25828 states and 32497 transitions. [2023-11-29 04:47:25,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.575757575757576) internal successors, (184), 33 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:47:25,678 INFO L276 IsEmpty]: Start isEmpty. Operand 25828 states and 32497 transitions. [2023-11-29 04:47:25,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-29 04:47:25,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:47:25,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:47:25,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:47:25,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 04:47:25,880 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:47:25,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:47:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash 497746538, now seen corresponding path program 1 times [2023-11-29 04:47:25,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:47:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348437971] [2023-11-29 04:47:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:47:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:47:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:47:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:47:28,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:47:28,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348437971] [2023-11-29 04:47:28,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348437971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:47:28,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125467618] [2023-11-29 04:47:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:47:28,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:47:28,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:47:28,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:47:28,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:47:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:47:28,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:47:28,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:47:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:47:29,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:47:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:47:30,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125467618] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:47:30,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:47:30,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 13] total 47 [2023-11-29 04:47:30,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694207570] [2023-11-29 04:47:30,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:47:30,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 04:47:30,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:47:30,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 04:47:30,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 04:47:30,886 INFO L87 Difference]: Start difference. First operand 25828 states and 32497 transitions. Second operand has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 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) [2023-11-29 04:48:01,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:01,223 INFO L93 Difference]: Finished difference Result 62054 states and 76857 transitions. [2023-11-29 04:48:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-11-29 04:48:01,224 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 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 72 [2023-11-29 04:48:01,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:01,261 INFO L225 Difference]: With dead ends: 62054 [2023-11-29 04:48:01,261 INFO L226 Difference]: Without dead ends: 50557 [2023-11-29 04:48:01,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17684 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=9044, Invalid=40462, Unknown=0, NotChecked=0, Total=49506 [2023-11-29 04:48:01,274 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 22652 mSDsluCounter, 26684 mSDsCounter, 0 mSdLazyCounter, 4563 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22652 SdHoareTripleChecker+Valid, 28297 SdHoareTripleChecker+Invalid, 4709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:01,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22652 Valid, 28297 Invalid, 4709 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [146 Valid, 4563 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 04:48:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50557 states. [2023-11-29 04:48:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50557 to 22353. [2023-11-29 04:48:02,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22353 states, 22351 states have (on average 1.2618674779651917) internal successors, (28204), 22352 states have internal predecessors, (28204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22353 states to 22353 states and 28204 transitions. [2023-11-29 04:48:02,584 INFO L78 Accepts]: Start accepts. Automaton has 22353 states and 28204 transitions. Word has length 72 [2023-11-29 04:48:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:02,584 INFO L495 AbstractCegarLoop]: Abstraction has 22353 states and 28204 transitions. [2023-11-29 04:48:02,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.212765957446808) internal successors, (198), 47 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) [2023-11-29 04:48:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 22353 states and 28204 transitions. [2023-11-29 04:48:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 04:48:02,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:02,586 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 04:48:02,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:48:02,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:02,787 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:02,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:02,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2041527444, now seen corresponding path program 1 times [2023-11-29 04:48:02,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:02,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363508596] [2023-11-29 04:48:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:02,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-29 04:48:02,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:02,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363508596] [2023-11-29 04:48:02,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363508596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:02,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:02,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:48:02,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329819545] [2023-11-29 04:48:02,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:02,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:02,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:02,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:02,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:02,860 INFO L87 Difference]: Start difference. First operand 22353 states and 28204 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:07,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:07,265 INFO L93 Difference]: Finished difference Result 25359 states and 33131 transitions. [2023-11-29 04:48:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:07,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 [2023-11-29 04:48:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:07,282 INFO L225 Difference]: With dead ends: 25359 [2023-11-29 04:48:07,283 INFO L226 Difference]: Without dead ends: 23855 [2023-11-29 04:48:07,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:07,288 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 809 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:07,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 555 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 04:48:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23855 states. [2023-11-29 04:48:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23855 to 23855. [2023-11-29 04:48:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23855 states, 23853 states have (on average 1.258709596277198) internal successors, (30024), 23854 states have internal predecessors, (30024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23855 states to 23855 states and 30024 transitions. [2023-11-29 04:48:08,564 INFO L78 Accepts]: Start accepts. Automaton has 23855 states and 30024 transitions. Word has length 94 [2023-11-29 04:48:08,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:08,564 INFO L495 AbstractCegarLoop]: Abstraction has 23855 states and 30024 transitions. [2023-11-29 04:48:08,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 23855 states and 30024 transitions. [2023-11-29 04:48:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 04:48:08,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:08,566 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 04:48:08,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 04:48:08,566 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:08,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:08,567 INFO L85 PathProgramCache]: Analyzing trace with hash 164533342, now seen corresponding path program 1 times [2023-11-29 04:48:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:08,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320590947] [2023-11-29 04:48:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:08,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:08,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:08,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320590947] [2023-11-29 04:48:08,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320590947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:08,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:08,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:08,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488973777] [2023-11-29 04:48:08,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:08,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:08,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:08,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:08,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:08,716 INFO L87 Difference]: Start difference. First operand 23855 states and 30024 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:12,815 INFO L93 Difference]: Finished difference Result 27618 states and 35155 transitions. [2023-11-29 04:48:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:48:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-11-29 04:48:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:12,835 INFO L225 Difference]: With dead ends: 27618 [2023-11-29 04:48:12,835 INFO L226 Difference]: Without dead ends: 24612 [2023-11-29 04:48:12,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:48:12,841 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 1447 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:12,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1798 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 04:48:12,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24612 states. [2023-11-29 04:48:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24612 to 24606. [2023-11-29 04:48:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24606 states, 24604 states have (on average 1.251056738741668) internal successors, (30781), 24605 states have internal predecessors, (30781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24606 states to 24606 states and 30781 transitions. [2023-11-29 04:48:14,178 INFO L78 Accepts]: Start accepts. Automaton has 24606 states and 30781 transitions. Word has length 98 [2023-11-29 04:48:14,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:14,178 INFO L495 AbstractCegarLoop]: Abstraction has 24606 states and 30781 transitions. [2023-11-29 04:48:14,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 24606 states and 30781 transitions. [2023-11-29 04:48:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 04:48:14,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:14,183 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:14,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 04:48:14,183 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:14,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:14,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1625481862, now seen corresponding path program 1 times [2023-11-29 04:48:14,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243136389] [2023-11-29 04:48:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:14,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243136389] [2023-11-29 04:48:14,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243136389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623787982] [2023-11-29 04:48:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:14,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:14,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:14,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:14,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:48:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:15,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:48:15,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:15,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:17,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623787982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:17,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:48:17,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-11-29 04:48:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401627859] [2023-11-29 04:48:17,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:17,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 04:48:17,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:17,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 04:48:17,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:48:17,566 INFO L87 Difference]: Start difference. First operand 24606 states and 30781 transitions. Second operand has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:19,644 INFO L93 Difference]: Finished difference Result 36554 states and 45640 transitions. [2023-11-29 04:48:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 04:48:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-11-29 04:48:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:19,663 INFO L225 Difference]: With dead ends: 36554 [2023-11-29 04:48:19,663 INFO L226 Difference]: Without dead ends: 25922 [2023-11-29 04:48:19,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 04:48:19,670 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 15044 mSDsluCounter, 10793 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15044 SdHoareTripleChecker+Valid, 12309 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:19,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15044 Valid, 12309 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:48:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25922 states. [2023-11-29 04:48:21,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25922 to 24606. [2023-11-29 04:48:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24606 states, 24604 states have (on average 1.2410177206958217) internal successors, (30534), 24605 states have internal predecessors, (30534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24606 states to 24606 states and 30534 transitions. [2023-11-29 04:48:21,075 INFO L78 Accepts]: Start accepts. Automaton has 24606 states and 30534 transitions. Word has length 113 [2023-11-29 04:48:21,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:21,075 INFO L495 AbstractCegarLoop]: Abstraction has 24606 states and 30534 transitions. [2023-11-29 04:48:21,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.25925925925926) internal successors, (250), 26 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 24606 states and 30534 transitions. [2023-11-29 04:48:21,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 04:48:21,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:21,079 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:21,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:48:21,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 04:48:21,280 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:21,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:21,280 INFO L85 PathProgramCache]: Analyzing trace with hash 343927418, now seen corresponding path program 1 times [2023-11-29 04:48:21,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:21,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684242996] [2023-11-29 04:48:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:21,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 31 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:21,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:21,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684242996] [2023-11-29 04:48:21,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684242996] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:21,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560836033] [2023-11-29 04:48:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:21,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:21,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:21,975 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:21,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:48:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:22,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:48:22,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:22,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:25,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560836033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:25,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:48:25,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-11-29 04:48:25,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760215368] [2023-11-29 04:48:25,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:25,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 04:48:25,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:25,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 04:48:25,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 04:48:25,206 INFO L87 Difference]: Start difference. First operand 24606 states and 30534 transitions. Second operand has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:30,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:30,173 INFO L93 Difference]: Finished difference Result 41435 states and 51313 transitions. [2023-11-29 04:48:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 04:48:30,174 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 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 113 [2023-11-29 04:48:30,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:30,193 INFO L225 Difference]: With dead ends: 41435 [2023-11-29 04:48:30,193 INFO L226 Difference]: Without dead ends: 25654 [2023-11-29 04:48:30,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1384, Invalid=5588, Unknown=0, NotChecked=0, Total=6972 [2023-11-29 04:48:30,201 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 22847 mSDsluCounter, 12339 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22847 SdHoareTripleChecker+Valid, 13844 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:30,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22847 Valid, 13844 Invalid, 1079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:48:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25654 states. [2023-11-29 04:48:31,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25654 to 18713. [2023-11-29 04:48:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18713 states, 18711 states have (on average 1.2292768959435627) internal successors, (23001), 18712 states have internal predecessors, (23001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18713 states to 18713 states and 23001 transitions. [2023-11-29 04:48:31,800 INFO L78 Accepts]: Start accepts. Automaton has 18713 states and 23001 transitions. Word has length 113 [2023-11-29 04:48:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:31,800 INFO L495 AbstractCegarLoop]: Abstraction has 18713 states and 23001 transitions. [2023-11-29 04:48:31,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.06060606060606) internal successors, (299), 32 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:31,801 INFO L276 IsEmpty]: Start isEmpty. Operand 18713 states and 23001 transitions. [2023-11-29 04:48:31,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 04:48:31,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:31,804 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:31,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:48:32,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:32,005 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:32,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1893606096, now seen corresponding path program 1 times [2023-11-29 04:48:32,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:32,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675303426] [2023-11-29 04:48:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:32,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675303426] [2023-11-29 04:48:32,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675303426] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:32,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775531581] [2023-11-29 04:48:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:32,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:32,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:32,641 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:32,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:48:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:32,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:48:32,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:34,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 30 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:38,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775531581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:38,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:48:38,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 46 [2023-11-29 04:48:38,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179868569] [2023-11-29 04:48:38,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:38,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 04:48:38,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:38,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 04:48:38,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 04:48:38,159 INFO L87 Difference]: Start difference. First operand 18713 states and 23001 transitions. Second operand has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:34,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:34,841 INFO L93 Difference]: Finished difference Result 39616 states and 48037 transitions. [2023-11-29 04:49:34,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2023-11-29 04:49:34,842 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 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 114 [2023-11-29 04:49:34,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:34,864 INFO L225 Difference]: With dead ends: 39616 [2023-11-29 04:49:34,865 INFO L226 Difference]: Without dead ends: 30331 [2023-11-29 04:49:34,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34604 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=10783, Invalid=79517, Unknown=0, NotChecked=0, Total=90300 [2023-11-29 04:49:34,875 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 27561 mSDsluCounter, 31848 mSDsCounter, 0 mSdLazyCounter, 4817 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27561 SdHoareTripleChecker+Valid, 33421 SdHoareTripleChecker+Invalid, 5029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 4817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:34,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27561 Valid, 33421 Invalid, 5029 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [212 Valid, 4817 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 04:49:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30331 states. [2023-11-29 04:49:36,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30331 to 21894. [2023-11-29 04:49:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21894 states, 21892 states have (on average 1.2123606797003472) internal successors, (26541), 21893 states have internal predecessors, (26541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21894 states to 21894 states and 26541 transitions. [2023-11-29 04:49:36,602 INFO L78 Accepts]: Start accepts. Automaton has 21894 states and 26541 transitions. Word has length 114 [2023-11-29 04:49:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:36,602 INFO L495 AbstractCegarLoop]: Abstraction has 21894 states and 26541 transitions. [2023-11-29 04:49:36,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.956521739130435) internal successors, (320), 46 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 21894 states and 26541 transitions. [2023-11-29 04:49:36,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 04:49:36,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:36,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:49:36,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:49:36,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 04:49:36,806 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:36,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash -541139766, now seen corresponding path program 1 times [2023-11-29 04:49:36,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:36,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018756697] [2023-11-29 04:49:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 13 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:39,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018756697] [2023-11-29 04:49:39,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018756697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825694493] [2023-11-29 04:49:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:39,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:39,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:39,497 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:39,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:49:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:39,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 04:49:39,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:41,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:45,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825694493] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:45,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:49:45,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 18] total 63 [2023-11-29 04:49:45,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467057279] [2023-11-29 04:49:45,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:45,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-11-29 04:49:45,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:45,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-11-29 04:49:45,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3675, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 04:49:45,295 INFO L87 Difference]: Start difference. First operand 21894 states and 26541 transitions. Second operand has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:11,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:52:11,650 INFO L93 Difference]: Finished difference Result 49843 states and 59565 transitions. [2023-11-29 04:52:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 399 states. [2023-11-29 04:52:11,651 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 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 115 [2023-11-29 04:52:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:52:11,677 INFO L225 Difference]: With dead ends: 49843 [2023-11-29 04:52:11,677 INFO L226 Difference]: Without dead ends: 43513 [2023-11-29 04:52:11,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84027 ImplicationChecksByTransitivity, 130.9s TimeCoverageRelationStatistics Valid=20781, Invalid=190359, Unknown=0, NotChecked=0, Total=211140 [2023-11-29 04:52:11,690 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 32385 mSDsluCounter, 53929 mSDsCounter, 0 mSdLazyCounter, 12401 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32385 SdHoareTripleChecker+Valid, 55686 SdHoareTripleChecker+Invalid, 12873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 12401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:52:11,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32385 Valid, 55686 Invalid, 12873 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [472 Valid, 12401 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2023-11-29 04:52:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43513 states. [2023-11-29 04:52:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43513 to 25870. [2023-11-29 04:52:14,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25870 states, 25868 states have (on average 1.2027988248028452) internal successors, (31114), 25869 states have internal predecessors, (31114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25870 states to 25870 states and 31114 transitions. [2023-11-29 04:52:14,258 INFO L78 Accepts]: Start accepts. Automaton has 25870 states and 31114 transitions. Word has length 115 [2023-11-29 04:52:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:52:14,258 INFO L495 AbstractCegarLoop]: Abstraction has 25870 states and 31114 transitions. [2023-11-29 04:52:14,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 5.190476190476191) internal successors, (327), 63 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:14,259 INFO L276 IsEmpty]: Start isEmpty. Operand 25870 states and 31114 transitions. [2023-11-29 04:52:14,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 04:52:14,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:52:14,262 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 04:52:14,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 04:52:14,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 04:52:14,463 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:52:14,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1319738396, now seen corresponding path program 1 times [2023-11-29 04:52:14,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:14,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444926064] [2023-11-29 04:52:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:14,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:15,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:15,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444926064] [2023-11-29 04:52:15,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444926064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:52:15,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194776920] [2023-11-29 04:52:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:15,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:15,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:52:15,856 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:52:15,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514e8e03-0954-4c92-8b54-fc6952e90c87/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:52:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:15,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 04:52:15,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:21,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:52:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:34,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194776920] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:52:34,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:52:34,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 33, 31] total 81 [2023-11-29 04:52:34,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811508885] [2023-11-29 04:52:34,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:52:34,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-11-29 04:52:34,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:34,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-11-29 04:52:34,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=5955, Unknown=0, NotChecked=0, Total=6480 [2023-11-29 04:52:34,462 INFO L87 Difference]: Start difference. First operand 25870 states and 31114 transitions. Second operand has 81 states, 81 states have (on average 4.0246913580246915) internal successors, (326), 81 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)