./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/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_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/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_7692d8db-c595-43b4-834f-393cb6fca745/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 aa83d3f5173117ef698c13f0bcf19338ee3f6f59e63ac9b8ac7bd80f7d40c635 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:12:53,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:12:53,264 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:12:53,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:12:53,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:12:53,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:12:53,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:12:53,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:12:53,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:12:53,296 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:12:53,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:12:53,297 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:12:53,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:12:53,299 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:12:53,299 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:12:53,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:12:53,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:12:53,301 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:12:53,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:12:53,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:12:53,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:12:53,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:12:53,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:12:53,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:12:53,307 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:12:53,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:12:53,308 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:12:53,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:12:53,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:12:53,309 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:12:53,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:12:53,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:12:53,310 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:12:53,310 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:12:53,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:12:53,311 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:12:53,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:12:53,311 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:12:53,311 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:12:53,311 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:12:53,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:12:53,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:12:53,312 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_7692d8db-c595-43b4-834f-393cb6fca745/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa83d3f5173117ef698c13f0bcf19338ee3f6f59e63ac9b8ac7bd80f7d40c635 [2023-11-29 03:12:53,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:12:53,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:12:53,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:12:53,611 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:12:53,612 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:12:53,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 03:12:56,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:12:56,927 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:12:56,928 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 03:12:56,952 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/data/12863eb34/001ef05654624c4782ae02b415d9ba58/FLAGc01d8a360 [2023-11-29 03:12:56,966 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/data/12863eb34/001ef05654624c4782ae02b415d9ba58 [2023-11-29 03:12:56,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:12:56,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:12:56,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:12:56,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:12:56,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:12:56,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:12:56" (1/1) ... [2023-11-29 03:12:56,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3d9496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:56, skipping insertion in model container [2023-11-29 03:12:56,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:12:56" (1/1) ... [2023-11-29 03:12:57,122 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:12:57,445 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_7692d8db-c595-43b4-834f-393cb6fca745/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[8786,8799] [2023-11-29 03:12:57,503 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_7692d8db-c595-43b4-834f-393cb6fca745/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[14341,14354] [2023-11-29 03:12:58,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:12:58,381 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:12:58,411 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_7692d8db-c595-43b4-834f-393cb6fca745/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[8786,8799] [2023-11-29 03:12:58,421 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_7692d8db-c595-43b4-834f-393cb6fca745/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[14341,14354] [2023-11-29 03:12:58,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:12:58,924 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:12:58,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58 WrapperNode [2023-11-29 03:12:58,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:12:58,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:12:58,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:12:58,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:12:58,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:58,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,298 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5032 [2023-11-29 03:12:59,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:12:59,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:12:59,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:12:59,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:12:59,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,516 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 03:12:59,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,677 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:12:59,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:12:59,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:12:59,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:12:59,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (1/1) ... [2023-11-29 03:12:59,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:12:59,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:12:59,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:12:59,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:12:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:12:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:12:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:12:59,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:12:59,954 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:12:59,956 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:13:04,739 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:13:04,794 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:13:04,794 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 03:13:04,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:13:04 BoogieIcfgContainer [2023-11-29 03:13:04,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:13:04,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:13:04,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:13:04,800 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:13:04,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:12:56" (1/3) ... [2023-11-29 03:13:04,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2209626a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:13:04, skipping insertion in model container [2023-11-29 03:13:04,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:12:58" (2/3) ... [2023-11-29 03:13:04,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2209626a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:13:04, skipping insertion in model container [2023-11-29 03:13:04,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:13:04" (3/3) ... [2023-11-29 03:13:04,803 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-29 03:13:04,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:13:04,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 03:13:04,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:13:04,889 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;@36b4291c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:13:04,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 03:13:04,899 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 03:13:04,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 03:13:04,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:04,906 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 03:13:04,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:04,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash -581144777, now seen corresponding path program 1 times [2023-11-29 03:13:04,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:04,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082548935] [2023-11-29 03:13:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:04,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:05,102 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 03:13:05,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082548935] [2023-11-29 03:13:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082548935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:05,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:05,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:13:05,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722558336] [2023-11-29 03:13:05,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:13:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:05,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:13:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:13:05,135 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 03:13:05,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:05,245 INFO L93 Difference]: Finished difference Result 1612 states and 3179 transitions. [2023-11-29 03:13:05,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:13:05,247 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 03:13:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:05,263 INFO L225 Difference]: With dead ends: 1612 [2023-11-29 03:13:05,264 INFO L226 Difference]: Without dead ends: 816 [2023-11-29 03:13:05,269 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 03:13:05,273 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:05,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1544 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:13:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-29 03:13:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-11-29 03:13:05,359 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 03:13:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-11-29 03:13:05,366 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-11-29 03:13:05,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:05,367 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-11-29 03:13:05,367 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 03:13:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-11-29 03:13:05,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 03:13:05,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:05,369 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 03:13:05,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:13:05,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:05,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1861008455, now seen corresponding path program 1 times [2023-11-29 03:13:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:05,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531640854] [2023-11-29 03:13:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:05,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:05,657 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 03:13:05,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:05,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531640854] [2023-11-29 03:13:05,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531640854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:05,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:05,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:13:05,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693980929] [2023-11-29 03:13:05,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:05,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:13:05,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:13:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:13:05,662 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 03:13:05,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:05,757 INFO L93 Difference]: Finished difference Result 854 states and 1604 transitions. [2023-11-29 03:13:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:13:05,758 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 03:13:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:05,764 INFO L225 Difference]: With dead ends: 854 [2023-11-29 03:13:05,764 INFO L226 Difference]: Without dead ends: 816 [2023-11-29 03:13:05,765 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 03:13:05,767 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 0 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:05,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4599 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:13:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-11-29 03:13:05,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-11-29 03:13:05,793 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 03:13:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-11-29 03:13:05,799 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-11-29 03:13:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:05,800 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-11-29 03:13:05,800 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 03:13:05,800 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-11-29 03:13:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 03:13:05,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:05,802 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 03:13:05,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:13:05,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:05,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1583731468, now seen corresponding path program 1 times [2023-11-29 03:13:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:05,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434248380] [2023-11-29 03:13:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:05,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:05,972 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 03:13:05,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434248380] [2023-11-29 03:13:05,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434248380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:05,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:05,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:13:05,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257924961] [2023-11-29 03:13:05,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:05,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:13:05,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:05,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:13:05,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:13:05,976 INFO L87 Difference]: Start difference. First operand 816 states and 1522 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 03:13:06,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:06,215 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2023-11-29 03:13:06,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:13:06,215 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 03:13:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:06,223 INFO L225 Difference]: With dead ends: 1096 [2023-11-29 03:13:06,224 INFO L226 Difference]: Without dead ends: 1061 [2023-11-29 03:13:06,225 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 03:13:06,226 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 03:13:06,227 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 03:13:06,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-11-29 03:13:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2023-11-29 03:13:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 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 03:13:06,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2023-11-29 03:13:06,263 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2023-11-29 03:13:06,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:06,263 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2023-11-29 03:13:06,264 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 03:13:06,264 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2023-11-29 03:13:06,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 03:13:06,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:06,266 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 03:13:06,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:13:06,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:06,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:06,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1671128700, now seen corresponding path program 1 times [2023-11-29 03:13:06,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:06,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572851157] [2023-11-29 03:13:06,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:06,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:06,360 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 03:13:06,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:06,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572851157] [2023-11-29 03:13:06,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572851157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:06,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:06,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:13:06,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151026118] [2023-11-29 03:13:06,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:06,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:06,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:06,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:06,363 INFO L87 Difference]: Start difference. First operand 849 states and 1575 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 03:13:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:06,411 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2023-11-29 03:13:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:06,412 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 03:13:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:06,419 INFO L225 Difference]: With dead ends: 974 [2023-11-29 03:13:06,419 INFO L226 Difference]: Without dead ends: 906 [2023-11-29 03:13:06,420 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 03:13:06,421 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 03:13:06,422 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 03:13:06,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-29 03:13:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-11-29 03:13:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 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 03:13:06,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2023-11-29 03:13:06,459 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2023-11-29 03:13:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:06,459 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2023-11-29 03:13:06,459 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 03:13:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2023-11-29 03:13:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 03:13:06,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:06,462 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 03:13:06,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:13:06,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:06,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:06,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1668983748, now seen corresponding path program 1 times [2023-11-29 03:13:06,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:06,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848208763] [2023-11-29 03:13:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:06,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:06,703 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 03:13:06,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:06,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848208763] [2023-11-29 03:13:06,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848208763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:06,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:06,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:13:06,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630545951] [2023-11-29 03:13:06,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:06,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:13:06,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:06,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:13:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:13:06,706 INFO L87 Difference]: Start difference. First operand 904 states and 1661 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 03:13:06,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:06,842 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2023-11-29 03:13:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:13:06,843 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 03:13:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:06,848 INFO L225 Difference]: With dead ends: 1029 [2023-11-29 03:13:06,848 INFO L226 Difference]: Without dead ends: 906 [2023-11-29 03:13:06,849 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 03:13:06,850 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1488 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 03:13:06,851 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 03:13:06,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-11-29 03:13:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-11-29 03:13:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 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 03:13:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2023-11-29 03:13:06,871 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2023-11-29 03:13:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:06,871 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2023-11-29 03:13:06,872 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 03:13:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2023-11-29 03:13:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 03:13:06,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:06,873 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 03:13:06,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:13:06,874 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:06,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash -327272229, now seen corresponding path program 1 times [2023-11-29 03:13:06,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:06,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302273046] [2023-11-29 03:13:06,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:06,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:07,053 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 03:13:07,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:07,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302273046] [2023-11-29 03:13:07,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302273046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:07,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:07,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:13:07,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756098565] [2023-11-29 03:13:07,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:07,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:13:07,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:07,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:13:07,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:13:07,055 INFO L87 Difference]: Start difference. First operand 904 states and 1659 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 03:13:07,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:07,095 INFO L93 Difference]: Finished difference Result 912 states and 1668 transitions. [2023-11-29 03:13:07,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:13:07,095 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 03:13:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:07,101 INFO L225 Difference]: With dead ends: 912 [2023-11-29 03:13:07,102 INFO L226 Difference]: Without dead ends: 910 [2023-11-29 03:13:07,102 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 03:13:07,103 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 03:13:07,104 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 03:13:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-11-29 03:13:07,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-11-29 03:13:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 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 03:13:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2023-11-29 03:13:07,129 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2023-11-29 03:13:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:07,129 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2023-11-29 03:13:07,129 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 03:13:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2023-11-29 03:13:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 03:13:07,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:07,130 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 03:13:07,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:13:07,131 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:07,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1398089532, now seen corresponding path program 1 times [2023-11-29 03:13:07,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:07,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83374396] [2023-11-29 03:13:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:07,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:07,172 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 03:13:07,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:07,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83374396] [2023-11-29 03:13:07,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83374396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:07,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:07,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:13:07,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115042336] [2023-11-29 03:13:07,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:07,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:07,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:07,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:07,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:07,174 INFO L87 Difference]: Start difference. First operand 908 states and 1662 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 03:13:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:07,207 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2023-11-29 03:13:07,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:07,208 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 03:13:07,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:07,214 INFO L225 Difference]: With dead ends: 1046 [2023-11-29 03:13:07,214 INFO L226 Difference]: Without dead ends: 974 [2023-11-29 03:13:07,215 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 03:13:07,215 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 03:13:07,216 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 03:13:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-11-29 03:13:07,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2023-11-29 03:13:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 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 03:13:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2023-11-29 03:13:07,238 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2023-11-29 03:13:07,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:07,238 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2023-11-29 03:13:07,239 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 03:13:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2023-11-29 03:13:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 03:13:07,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:07,240 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 03:13:07,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:13:07,240 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:07,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:07,241 INFO L85 PathProgramCache]: Analyzing trace with hash 812377404, now seen corresponding path program 1 times [2023-11-29 03:13:07,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:07,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325847635] [2023-11-29 03:13:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:07,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:07,286 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 03:13:07,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:07,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325847635] [2023-11-29 03:13:07,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325847635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:07,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:07,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:13:07,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132378305] [2023-11-29 03:13:07,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:07,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:07,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:07,289 INFO L87 Difference]: Start difference. First operand 972 states and 1759 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 03:13:07,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:07,323 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2023-11-29 03:13:07,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:07,323 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 03:13:07,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:07,329 INFO L225 Difference]: With dead ends: 1326 [2023-11-29 03:13:07,330 INFO L226 Difference]: Without dead ends: 1137 [2023-11-29 03:13:07,330 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 03:13:07,331 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 03:13:07,331 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 03:13:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-11-29 03:13:07,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-11-29 03:13:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 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 03:13:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2023-11-29 03:13:07,356 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2023-11-29 03:13:07,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:07,356 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2023-11-29 03:13:07,356 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 03:13:07,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2023-11-29 03:13:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 03:13:07,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:07,357 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 03:13:07,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:13:07,358 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:07,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:07,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1701110844, now seen corresponding path program 1 times [2023-11-29 03:13:07,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:07,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117689032] [2023-11-29 03:13:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:07,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:07,398 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 03:13:07,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:07,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117689032] [2023-11-29 03:13:07,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117689032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:07,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:07,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:13:07,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606097982] [2023-11-29 03:13:07,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:07,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:07,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:07,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:07,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:07,401 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 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 03:13:07,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:07,442 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2023-11-29 03:13:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:07,442 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 03:13:07,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:07,450 INFO L225 Difference]: With dead ends: 1791 [2023-11-29 03:13:07,450 INFO L226 Difference]: Without dead ends: 1439 [2023-11-29 03:13:07,451 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 03:13:07,452 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 03:13:07,452 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 03:13:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-11-29 03:13:07,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2023-11-29 03:13:07,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 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 03:13:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2023-11-29 03:13:07,486 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2023-11-29 03:13:07,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:07,486 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2023-11-29 03:13:07,487 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 03:13:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2023-11-29 03:13:07,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 03:13:07,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:07,487 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 03:13:07,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:13:07,488 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:07,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:07,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1438033468, now seen corresponding path program 1 times [2023-11-29 03:13:07,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:07,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591638994] [2023-11-29 03:13:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:07,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:07,527 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 03:13:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591638994] [2023-11-29 03:13:07,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591638994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:07,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:07,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:13:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118879076] [2023-11-29 03:13:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:07,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:07,528 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 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 03:13:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:07,578 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2023-11-29 03:13:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:07,579 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 03:13:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:07,588 INFO L225 Difference]: With dead ends: 2649 [2023-11-29 03:13:07,588 INFO L226 Difference]: Without dead ends: 1995 [2023-11-29 03:13:07,590 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 03:13:07,590 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 03:13:07,591 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 03:13:07,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-11-29 03:13:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2023-11-29 03:13:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 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 03:13:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2023-11-29 03:13:07,645 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2023-11-29 03:13:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:07,645 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2023-11-29 03:13:07,645 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 03:13:07,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2023-11-29 03:13:07,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 03:13:07,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:07,646 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, 1, 1] [2023-11-29 03:13:07,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:13:07,646 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:07,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:07,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2145314009, now seen corresponding path program 1 times [2023-11-29 03:13:07,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:07,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142645171] [2023-11-29 03:13:07,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:07,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:07,692 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 03:13:07,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:07,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142645171] [2023-11-29 03:13:07,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142645171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:07,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:07,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:13:07,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586179272] [2023-11-29 03:13:07,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:07,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:07,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:07,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:07,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:07,694 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 03:13:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:11,376 INFO L93 Difference]: Finished difference Result 3497 states and 6086 transitions. [2023-11-29 03:13:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:11,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-11-29 03:13:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:11,388 INFO L225 Difference]: With dead ends: 3497 [2023-11-29 03:13:11,388 INFO L226 Difference]: Without dead ends: 2744 [2023-11-29 03:13:11,390 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 03:13:11,390 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 851 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:11,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 157 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 03:13:11,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2023-11-29 03:13:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2744. [2023-11-29 03:13:11,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2742 states have (on average 1.6732312180889861) internal successors, (4588), 2743 states have internal predecessors, (4588), 0 states have call successors, (0), 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 03:13:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 4588 transitions. [2023-11-29 03:13:11,480 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 4588 transitions. Word has length 47 [2023-11-29 03:13:11,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:11,480 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 4588 transitions. [2023-11-29 03:13:11,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 03:13:11,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 4588 transitions. [2023-11-29 03:13:11,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 03:13:11,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:11,482 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 03:13:11,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:13:11,482 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:11,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:11,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2057850860, now seen corresponding path program 1 times [2023-11-29 03:13:11,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:11,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369991629] [2023-11-29 03:13:11,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:11,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:11,622 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 03:13:11,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:11,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369991629] [2023-11-29 03:13:11,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369991629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:11,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:11,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:13:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817392499] [2023-11-29 03:13:11,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:11,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:13:11,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:13:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:13:11,624 INFO L87 Difference]: Start difference. First operand 2744 states and 4588 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 03:13:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:11,864 INFO L93 Difference]: Finished difference Result 7506 states and 11449 transitions. [2023-11-29 03:13:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:13:11,864 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 03:13:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:11,900 INFO L225 Difference]: With dead ends: 7506 [2023-11-29 03:13:11,900 INFO L226 Difference]: Without dead ends: 6640 [2023-11-29 03:13:11,903 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 03:13:11,904 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:11,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:13:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2023-11-29 03:13:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 3784. [2023-11-29 03:13:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3782 states have (on average 1.6044420941300899) internal successors, (6068), 3783 states have internal predecessors, (6068), 0 states have call successors, (0), 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 03:13:12,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 6068 transitions. [2023-11-29 03:13:12,056 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 6068 transitions. Word has length 61 [2023-11-29 03:13:12,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:12,056 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 6068 transitions. [2023-11-29 03:13:12,056 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 03:13:12,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 6068 transitions. [2023-11-29 03:13:12,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 03:13:12,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:12,057 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 03:13:12,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:13:12,058 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:12,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:12,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1651404308, now seen corresponding path program 1 times [2023-11-29 03:13:12,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:12,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652953067] [2023-11-29 03:13:12,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:12,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:12,161 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 03:13:12,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:12,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652953067] [2023-11-29 03:13:12,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652953067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:12,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:12,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:13:12,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699164997] [2023-11-29 03:13:12,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:12,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:13:12,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:12,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:13:12,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:13:12,163 INFO L87 Difference]: Start difference. First operand 3784 states and 6068 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 03:13:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:12,376 INFO L93 Difference]: Finished difference Result 8714 states and 13177 transitions. [2023-11-29 03:13:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:13:12,377 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 03:13:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:12,404 INFO L225 Difference]: With dead ends: 8714 [2023-11-29 03:13:12,405 INFO L226 Difference]: Without dead ends: 7504 [2023-11-29 03:13:12,408 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 03:13:12,409 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:12,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:13:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2023-11-29 03:13:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 5424. [2023-11-29 03:13:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5422 states have (on average 1.5485060863150129) internal successors, (8396), 5423 states have internal predecessors, (8396), 0 states have call successors, (0), 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 03:13:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8396 transitions. [2023-11-29 03:13:12,569 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8396 transitions. Word has length 61 [2023-11-29 03:13:12,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:12,569 INFO L495 AbstractCegarLoop]: Abstraction has 5424 states and 8396 transitions. [2023-11-29 03:13:12,570 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 03:13:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8396 transitions. [2023-11-29 03:13:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 03:13:12,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:12,571 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 03:13:12,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:13:12,571 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:12,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:12,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1754829548, now seen corresponding path program 1 times [2023-11-29 03:13:12,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:12,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205877519] [2023-11-29 03:13:12,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:12,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:12,664 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 03:13:12,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:12,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205877519] [2023-11-29 03:13:12,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205877519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:12,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:12,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:13:12,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995707707] [2023-11-29 03:13:12,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:12,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:13:12,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:12,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:13:12,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:13:12,666 INFO L87 Difference]: Start difference. First operand 5424 states and 8396 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 03:13:12,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:12,972 INFO L93 Difference]: Finished difference Result 9922 states and 14897 transitions. [2023-11-29 03:13:12,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:13:12,972 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 03:13:12,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:12,991 INFO L225 Difference]: With dead ends: 9922 [2023-11-29 03:13:12,992 INFO L226 Difference]: Without dead ends: 8712 [2023-11-29 03:13:12,996 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 03:13:12,996 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4669 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 3308 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:12,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 3308 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:13:13,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8712 states. [2023-11-29 03:13:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8712 to 6632. [2023-11-29 03:13:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6632 states, 6630 states have (on average 1.5257918552036198) internal successors, (10116), 6631 states have internal predecessors, (10116), 0 states have call successors, (0), 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 03:13:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6632 states to 6632 states and 10116 transitions. [2023-11-29 03:13:13,313 INFO L78 Accepts]: Start accepts. Automaton has 6632 states and 10116 transitions. Word has length 61 [2023-11-29 03:13:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:13,313 INFO L495 AbstractCegarLoop]: Abstraction has 6632 states and 10116 transitions. [2023-11-29 03:13:13,314 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 03:13:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 6632 states and 10116 transitions. [2023-11-29 03:13:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 03:13:13,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:13,316 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 03:13:13,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:13:13,316 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:13,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2017906924, now seen corresponding path program 1 times [2023-11-29 03:13:13,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:13,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879288100] [2023-11-29 03:13:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:13,439 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 03:13:13,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879288100] [2023-11-29 03:13:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879288100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:13,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:13,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:13:13,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985366962] [2023-11-29 03:13:13,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:13,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:13:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:13:13,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:13:13,441 INFO L87 Difference]: Start difference. First operand 6632 states and 10116 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 03:13:13,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:13,771 INFO L93 Difference]: Finished difference Result 11130 states and 16617 transitions. [2023-11-29 03:13:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:13:13,772 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 03:13:13,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:13,791 INFO L225 Difference]: With dead ends: 11130 [2023-11-29 03:13:13,791 INFO L226 Difference]: Without dead ends: 9920 [2023-11-29 03:13:13,795 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 03:13:13,796 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4637 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:13,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3350 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:13:13,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2023-11-29 03:13:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 7840. [2023-11-29 03:13:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.5100791018116866) internal successors, (11836), 7839 states have internal predecessors, (11836), 0 states have call successors, (0), 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 03:13:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11836 transitions. [2023-11-29 03:13:14,068 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11836 transitions. Word has length 61 [2023-11-29 03:13:14,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:14,069 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11836 transitions. [2023-11-29 03:13:14,069 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 03:13:14,069 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11836 transitions. [2023-11-29 03:13:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 03:13:14,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:14,071 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 03:13:14,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 03:13:14,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:14,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:14,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1544035826, now seen corresponding path program 1 times [2023-11-29 03:13:14,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:14,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878759729] [2023-11-29 03:13:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:14,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,167 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 03:13:14,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:14,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878759729] [2023-11-29 03:13:14,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878759729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:14,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:14,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:13:14,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318473551] [2023-11-29 03:13:14,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:14,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:14,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:14,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:14,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:14,169 INFO L87 Difference]: Start difference. First operand 7840 states and 11836 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 03:13:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:14,303 INFO L93 Difference]: Finished difference Result 14148 states and 20830 transitions. [2023-11-29 03:13:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:14,303 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 03:13:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:14,315 INFO L225 Difference]: With dead ends: 14148 [2023-11-29 03:13:14,315 INFO L226 Difference]: Without dead ends: 7842 [2023-11-29 03:13:14,322 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 03:13:14,322 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 03:13:14,323 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 03:13:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7842 states. [2023-11-29 03:13:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7842 to 7840. [2023-11-29 03:13:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.4942587394743556) internal successors, (11712), 7839 states have internal predecessors, (11712), 0 states have call successors, (0), 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 03:13:14,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11712 transitions. [2023-11-29 03:13:14,505 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11712 transitions. Word has length 62 [2023-11-29 03:13:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:14,506 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11712 transitions. [2023-11-29 03:13:14,506 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 03:13:14,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11712 transitions. [2023-11-29 03:13:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 03:13:14,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:14,508 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 03:13:14,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 03:13:14,508 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:14,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:14,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1995198044, now seen corresponding path program 1 times [2023-11-29 03:13:14,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:14,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045351380] [2023-11-29 03:13:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:14,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,574 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 03:13:14,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:14,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045351380] [2023-11-29 03:13:14,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045351380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:14,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:14,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:13:14,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246625957] [2023-11-29 03:13:14,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:14,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:14,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:14,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:14,576 INFO L87 Difference]: Start difference. First operand 7840 states and 11712 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 03:13:14,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:14,646 INFO L93 Difference]: Finished difference Result 10236 states and 15119 transitions. [2023-11-29 03:13:14,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:14,646 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 03:13:14,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:14,657 INFO L225 Difference]: With dead ends: 10236 [2023-11-29 03:13:14,657 INFO L226 Difference]: Without dead ends: 3930 [2023-11-29 03:13:14,662 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 03:13:14,663 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 03:13:14,663 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 03:13:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-11-29 03:13:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2023-11-29 03:13:14,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3921 states have (on average 1.5809742412649834) internal successors, (6199), 3922 states have internal predecessors, (6199), 0 states have call successors, (0), 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 03:13:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6199 transitions. [2023-11-29 03:13:14,742 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6199 transitions. Word has length 63 [2023-11-29 03:13:14,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:14,742 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 6199 transitions. [2023-11-29 03:13:14,743 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 03:13:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6199 transitions. [2023-11-29 03:13:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 03:13:14,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:14,744 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 03:13:14,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 03:13:14,744 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:14,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1235798528, now seen corresponding path program 1 times [2023-11-29 03:13:14,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:14,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568379198] [2023-11-29 03:13:14,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:14,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,812 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 03:13:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568379198] [2023-11-29 03:13:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568379198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:14,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:14,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:13:14,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282635357] [2023-11-29 03:13:14,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:14,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:14,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:14,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:14,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:14,814 INFO L87 Difference]: Start difference. First operand 3923 states and 6199 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 03:13:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:14,889 INFO L93 Difference]: Finished difference Result 5115 states and 7873 transitions. [2023-11-29 03:13:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:14,889 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 03:13:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:14,894 INFO L225 Difference]: With dead ends: 5115 [2023-11-29 03:13:14,894 INFO L226 Difference]: Without dead ends: 2737 [2023-11-29 03:13:14,896 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 03:13:14,896 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 03:13:14,896 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 03:13:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-11-29 03:13:14,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2023-11-29 03:13:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2733 states have (on average 1.6483717526527626) internal successors, (4505), 2734 states have internal predecessors, (4505), 0 states have call successors, (0), 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 03:13:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4505 transitions. [2023-11-29 03:13:14,943 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4505 transitions. Word has length 64 [2023-11-29 03:13:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:14,944 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4505 transitions. [2023-11-29 03:13:14,944 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 03:13:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4505 transitions. [2023-11-29 03:13:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-29 03:13:14,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:14,945 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 03:13:14,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 03:13:14,945 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:14,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash -940349554, now seen corresponding path program 1 times [2023-11-29 03:13:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:14,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78286266] [2023-11-29 03:13:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:14,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:15,013 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 03:13:15,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:15,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78286266] [2023-11-29 03:13:15,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78286266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:15,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:15,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:13:15,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842317431] [2023-11-29 03:13:15,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:15,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:13:15,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:15,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:13:15,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:13:15,015 INFO L87 Difference]: Start difference. First operand 2735 states and 4505 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 03:13:15,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:15,061 INFO L93 Difference]: Finished difference Result 3333 states and 5332 transitions. [2023-11-29 03:13:15,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:13:15,062 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 03:13:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:15,066 INFO L225 Difference]: With dead ends: 3333 [2023-11-29 03:13:15,067 INFO L226 Difference]: Without dead ends: 2143 [2023-11-29 03:13:15,068 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 03:13:15,069 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 03:13:15,069 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 03:13:15,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-11-29 03:13:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2023-11-29 03:13:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2139 states have (on average 1.7152875175315567) internal successors, (3669), 2140 states have internal predecessors, (3669), 0 states have call successors, (0), 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 03:13:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3669 transitions. [2023-11-29 03:13:15,118 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3669 transitions. Word has length 66 [2023-11-29 03:13:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:15,118 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3669 transitions. [2023-11-29 03:13:15,119 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 03:13:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3669 transitions. [2023-11-29 03:13:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 03:13:15,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:15,120 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 03:13:15,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 03:13:15,120 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:15,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:15,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1534169756, now seen corresponding path program 1 times [2023-11-29 03:13:15,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:15,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643857725] [2023-11-29 03:13:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:15,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:17,084 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 03:13:17,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:17,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643857725] [2023-11-29 03:13:17,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643857725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:17,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174858896] [2023-11-29 03:13:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:17,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:17,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:17,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:17,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:13:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:17,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:13:17,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:17,383 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 03:13:17,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:17,564 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 03:13:17,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174858896] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:17,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:17,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 03:13:17,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893605422] [2023-11-29 03:13:17,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:17,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:13:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:17,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:13:17,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:13:17,567 INFO L87 Difference]: Start difference. First operand 2141 states and 3669 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 03:13:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:20,249 INFO L93 Difference]: Finished difference Result 6296 states and 9162 transitions. [2023-11-29 03:13:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-29 03:13:20,249 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 03:13:20,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:20,256 INFO L225 Difference]: With dead ends: 6296 [2023-11-29 03:13:20,256 INFO L226 Difference]: Without dead ends: 5700 [2023-11-29 03:13:20,259 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 03:13:20,260 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 14683 mSDsluCounter, 6247 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14683 SdHoareTripleChecker+Valid, 7749 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:20,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14683 Valid, 7749 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:13:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2023-11-29 03:13:20,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5372. [2023-11-29 03:13:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5370 states have (on average 1.45195530726257) internal successors, (7797), 5371 states have internal predecessors, (7797), 0 states have call successors, (0), 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 03:13:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7797 transitions. [2023-11-29 03:13:20,447 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7797 transitions. Word has length 68 [2023-11-29 03:13:20,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:20,448 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 7797 transitions. [2023-11-29 03:13:20,448 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 03:13:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7797 transitions. [2023-11-29 03:13:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 03:13:20,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:20,449 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 03:13:20,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:20,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:20,650 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:20,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash -353967630, now seen corresponding path program 1 times [2023-11-29 03:13:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:20,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351863871] [2023-11-29 03:13:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:20,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:23,686 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 03:13:23,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:23,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351863871] [2023-11-29 03:13:23,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351863871] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:23,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943449669] [2023-11-29 03:13:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:23,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:23,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:23,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:23,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:13:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:23,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:13:23,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:13:24,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:13:25,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943449669] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:25,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:25,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-11-29 03:13:25,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994321987] [2023-11-29 03:13:25,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:25,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:13:25,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:13:25,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:13:25,325 INFO L87 Difference]: Start difference. First operand 5372 states and 7797 transitions. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 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 03:13:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:27,896 INFO L93 Difference]: Finished difference Result 21318 states and 28359 transitions. [2023-11-29 03:13:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 03:13:27,897 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 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 03:13:27,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:27,915 INFO L225 Difference]: With dead ends: 21318 [2023-11-29 03:13:27,916 INFO L226 Difference]: Without dead ends: 17962 [2023-11-29 03:13:27,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=596, Invalid=2710, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 03:13:27,923 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 18804 mSDsluCounter, 7906 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18804 SdHoareTripleChecker+Valid, 9400 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:27,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18804 Valid, 9400 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:13:27,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17962 states. [2023-11-29 03:13:28,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17962 to 16590. [2023-11-29 03:13:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16590 states, 16588 states have (on average 1.3386182782734506) internal successors, (22205), 16589 states have internal predecessors, (22205), 0 states have call successors, (0), 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 03:13:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16590 states to 16590 states and 22205 transitions. [2023-11-29 03:13:28,552 INFO L78 Accepts]: Start accepts. Automaton has 16590 states and 22205 transitions. Word has length 69 [2023-11-29 03:13:28,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:28,552 INFO L495 AbstractCegarLoop]: Abstraction has 16590 states and 22205 transitions. [2023-11-29 03:13:28,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 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 03:13:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 16590 states and 22205 transitions. [2023-11-29 03:13:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 03:13:28,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:28,554 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 03:13:28,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:13:28,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 03:13:28,754 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:28,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1105613760, now seen corresponding path program 1 times [2023-11-29 03:13:28,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:28,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488021055] [2023-11-29 03:13:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:28,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:29,268 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 03:13:29,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:29,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488021055] [2023-11-29 03:13:29,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488021055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:29,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978201590] [2023-11-29 03:13:29,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:29,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:29,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:29,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:29,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:13:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:29,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:13:29,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:29,999 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 03:13:30,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:30,830 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 03:13:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978201590] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:30,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:30,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-11-29 03:13:30,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419872242] [2023-11-29 03:13:30,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:30,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 03:13:30,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:30,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 03:13:30,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:13:30,832 INFO L87 Difference]: Start difference. First operand 16590 states and 22205 transitions. Second operand has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 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 03:13:34,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:34,801 INFO L93 Difference]: Finished difference Result 55463 states and 71688 transitions. [2023-11-29 03:13:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 03:13:34,802 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 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 69 [2023-11-29 03:13:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:34,842 INFO L225 Difference]: With dead ends: 55463 [2023-11-29 03:13:34,843 INFO L226 Difference]: Without dead ends: 41536 [2023-11-29 03:13:34,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=796, Invalid=3236, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 03:13:34,864 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 23001 mSDsluCounter, 6550 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23001 SdHoareTripleChecker+Valid, 8048 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:34,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23001 Valid, 8048 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:13:34,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41536 states. [2023-11-29 03:13:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41536 to 22116. [2023-11-29 03:13:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22116 states, 22114 states have (on average 1.297775165053812) internal successors, (28699), 22115 states have internal predecessors, (28699), 0 states have call successors, (0), 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 03:13:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22116 states to 22116 states and 28699 transitions. [2023-11-29 03:13:35,911 INFO L78 Accepts]: Start accepts. Automaton has 22116 states and 28699 transitions. Word has length 69 [2023-11-29 03:13:35,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:35,911 INFO L495 AbstractCegarLoop]: Abstraction has 22116 states and 28699 transitions. [2023-11-29 03:13:35,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 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 03:13:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 22116 states and 28699 transitions. [2023-11-29 03:13:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 03:13:35,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:35,913 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 03:13:35,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:13:36,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:13:36,114 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:36,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash 80527306, now seen corresponding path program 1 times [2023-11-29 03:13:36,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:36,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753594668] [2023-11-29 03:13:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:36,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:36,446 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 03:13:36,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:36,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753594668] [2023-11-29 03:13:36,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753594668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:36,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16144469] [2023-11-29 03:13:36,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:36,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:36,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:36,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:36,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:13:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:36,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 03:13:36,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:36,997 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 03:13:36,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:37,735 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 03:13:37,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16144469] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:37,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:37,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-29 03:13:37,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907697069] [2023-11-29 03:13:37,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:37,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 03:13:37,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:37,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 03:13:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:13:37,738 INFO L87 Difference]: Start difference. First operand 22116 states and 28699 transitions. Second operand has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 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 03:13:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:38,977 INFO L93 Difference]: Finished difference Result 42393 states and 54248 transitions. [2023-11-29 03:13:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:13:38,977 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 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 03:13:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:38,995 INFO L225 Difference]: With dead ends: 42393 [2023-11-29 03:13:38,995 INFO L226 Difference]: Without dead ends: 23878 [2023-11-29 03:13:39,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:13:39,007 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 12190 mSDsluCounter, 6145 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12190 SdHoareTripleChecker+Valid, 7657 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:39,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12190 Valid, 7657 Invalid, 403 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:13:39,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23878 states. [2023-11-29 03:13:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23878 to 22440. [2023-11-29 03:13:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22440 states, 22438 states have (on average 1.2856315179606026) internal successors, (28847), 22439 states have internal predecessors, (28847), 0 states have call successors, (0), 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 03:13:39,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22440 states to 22440 states and 28847 transitions. [2023-11-29 03:13:39,937 INFO L78 Accepts]: Start accepts. Automaton has 22440 states and 28847 transitions. Word has length 70 [2023-11-29 03:13:39,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:39,938 INFO L495 AbstractCegarLoop]: Abstraction has 22440 states and 28847 transitions. [2023-11-29 03:13:39,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 states have internal predecessors, (152), 0 states have call successors, (0), 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 03:13:39,938 INFO L276 IsEmpty]: Start isEmpty. Operand 22440 states and 28847 transitions. [2023-11-29 03:13:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 03:13:39,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:39,940 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 03:13:39,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:13:40,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:13:40,141 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:40,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:40,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1901852944, now seen corresponding path program 1 times [2023-11-29 03:13:40,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:40,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571868056] [2023-11-29 03:13:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:40,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:42,895 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 03:13:42,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571868056] [2023-11-29 03:13:42,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571868056] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392076496] [2023-11-29 03:13:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:42,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:42,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:42,897 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:42,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:13:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:42,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 03:13:42,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:47,548 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 03:13:47,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:50,778 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 03:13:50,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392076496] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:50,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:50,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 19] total 61 [2023-11-29 03:13:50,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8698880] [2023-11-29 03:13:50,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:50,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-11-29 03:13:50,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:50,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-11-29 03:13:50,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 03:13:50,782 INFO L87 Difference]: Start difference. First operand 22440 states and 28847 transitions. Second operand has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:16:43,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:16:43,963 INFO L93 Difference]: Finished difference Result 79430 states and 98665 transitions. [2023-11-29 03:16:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 427 states. [2023-11-29 03:16:43,963 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-29 03:16:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:16:44,022 INFO L225 Difference]: With dead ends: 79430 [2023-11-29 03:16:44,022 INFO L226 Difference]: Without dead ends: 68003 [2023-11-29 03:16:44,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 484 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105628 ImplicationChecksByTransitivity, 162.2s TimeCoverageRelationStatistics Valid=32146, Invalid=203564, Unknown=0, NotChecked=0, Total=235710 [2023-11-29 03:16:44,057 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 24556 mSDsluCounter, 31596 mSDsCounter, 0 mSdLazyCounter, 7436 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24556 SdHoareTripleChecker+Valid, 33206 SdHoareTripleChecker+Invalid, 7692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 7436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:16:44,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24556 Valid, 33206 Invalid, 7692 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [256 Valid, 7436 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-11-29 03:16:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68003 states. [2023-11-29 03:16:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68003 to 38499. [2023-11-29 03:16:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38499 states, 38497 states have (on average 1.2629295789282282) internal successors, (48619), 38498 states have internal predecessors, (48619), 0 states have call successors, (0), 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 03:16:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38499 states to 38499 states and 48619 transitions. [2023-11-29 03:16:46,671 INFO L78 Accepts]: Start accepts. Automaton has 38499 states and 48619 transitions. Word has length 71 [2023-11-29 03:16:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:16:46,671 INFO L495 AbstractCegarLoop]: Abstraction has 38499 states and 48619 transitions. [2023-11-29 03:16:46,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:16:46,672 INFO L276 IsEmpty]: Start isEmpty. Operand 38499 states and 48619 transitions. [2023-11-29 03:16:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 03:16:46,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:16:46,673 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 03:16:46,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:16:46,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 03:16:46,874 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:16:46,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:16:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1828365840, now seen corresponding path program 1 times [2023-11-29 03:16:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:16:46,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132376986] [2023-11-29 03:16:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:46,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:16:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:48,685 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 03:16:48,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:16:48,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132376986] [2023-11-29 03:16:48,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132376986] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:16:48,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459518391] [2023-11-29 03:16:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:48,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:16:48,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:16:48,686 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:16:48,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:16:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:48,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 03:16:48,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:16:49,811 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 03:16:49,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:16:51,207 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 03:16:51,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459518391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:16:51,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:16:51,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 16] total 53 [2023-11-29 03:16:51,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026077361] [2023-11-29 03:16:51,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:16:51,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 03:16:51,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:16:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 03:16:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2553, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 03:16:51,210 INFO L87 Difference]: Start difference. First operand 38499 states and 48619 transitions. Second operand has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 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 03:17:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:19,235 INFO L93 Difference]: Finished difference Result 88449 states and 110779 transitions. [2023-11-29 03:17:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-11-29 03:17:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 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 71 [2023-11-29 03:17:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:19,293 INFO L225 Difference]: With dead ends: 88449 [2023-11-29 03:17:19,293 INFO L226 Difference]: Without dead ends: 69601 [2023-11-29 03:17:19,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11056 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=7356, Invalid=28176, Unknown=0, NotChecked=0, Total=35532 [2023-11-29 03:17:19,307 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 30848 mSDsluCounter, 27342 mSDsCounter, 0 mSdLazyCounter, 3832 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30848 SdHoareTripleChecker+Valid, 28911 SdHoareTripleChecker+Invalid, 4023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 3832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:19,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30848 Valid, 28911 Invalid, 4023 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [191 Valid, 3832 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 03:17:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69601 states. [2023-11-29 03:17:21,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69601 to 32995. [2023-11-29 03:17:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32995 states, 32993 states have (on average 1.266662625405389) internal successors, (41791), 32994 states have internal predecessors, (41791), 0 states have call successors, (0), 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 03:17:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32995 states to 32995 states and 41791 transitions. [2023-11-29 03:17:21,829 INFO L78 Accepts]: Start accepts. Automaton has 32995 states and 41791 transitions. Word has length 71 [2023-11-29 03:17:21,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:21,830 INFO L495 AbstractCegarLoop]: Abstraction has 32995 states and 41791 transitions. [2023-11-29 03:17:21,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 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 03:17:21,830 INFO L276 IsEmpty]: Start isEmpty. Operand 32995 states and 41791 transitions. [2023-11-29 03:17:21,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-29 03:17:21,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:21,832 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, 1] [2023-11-29 03:17:21,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:17:22,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 03:17:22,033 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:22,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1039608506, now seen corresponding path program 1 times [2023-11-29 03:17:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:22,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953061561] [2023-11-29 03:17:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:22,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:22,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:22,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953061561] [2023-11-29 03:17:22,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953061561] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:22,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257460197] [2023-11-29 03:17:22,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:22,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:22,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:22,550 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:22,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:17:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:22,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 03:17:22,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:24,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:27,297 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 03:17:27,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257460197] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:27,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:17:27,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 16] total 41 [2023-11-29 03:17:27,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327638655] [2023-11-29 03:17:27,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:27,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 03:17:27,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 03:17:27,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 03:17:27,300 INFO L87 Difference]: Start difference. First operand 32995 states and 41791 transitions. Second operand has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 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 03:17:36,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:36,676 INFO L93 Difference]: Finished difference Result 44731 states and 56112 transitions. [2023-11-29 03:17:36,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 03:17:36,677 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 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 73 [2023-11-29 03:17:36,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:36,705 INFO L225 Difference]: With dead ends: 44731 [2023-11-29 03:17:36,705 INFO L226 Difference]: Without dead ends: 30698 [2023-11-29 03:17:36,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2102, Invalid=6828, Unknown=0, NotChecked=0, Total=8930 [2023-11-29 03:17:36,715 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 17512 mSDsluCounter, 16490 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17512 SdHoareTripleChecker+Valid, 17999 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:36,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17512 Valid, 17999 Invalid, 1022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 03:17:36,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30698 states. [2023-11-29 03:17:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30698 to 27534. [2023-11-29 03:17:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27534 states, 27532 states have (on average 1.2701946825512132) internal successors, (34971), 27533 states have internal predecessors, (34971), 0 states have call successors, (0), 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 03:17:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27534 states to 27534 states and 34971 transitions. [2023-11-29 03:17:38,938 INFO L78 Accepts]: Start accepts. Automaton has 27534 states and 34971 transitions. Word has length 73 [2023-11-29 03:17:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:38,939 INFO L495 AbstractCegarLoop]: Abstraction has 27534 states and 34971 transitions. [2023-11-29 03:17:38,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 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 03:17:38,939 INFO L276 IsEmpty]: Start isEmpty. Operand 27534 states and 34971 transitions. [2023-11-29 03:17:38,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 03:17:38,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:38,943 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, 1] [2023-11-29 03:17:38,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:17:39,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 03:17:39,143 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:39,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:39,144 INFO L85 PathProgramCache]: Analyzing trace with hash 775315466, now seen corresponding path program 1 times [2023-11-29 03:17:39,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:39,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399290977] [2023-11-29 03:17:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:39,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:39,892 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 03:17:39,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399290977] [2023-11-29 03:17:39,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399290977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874434232] [2023-11-29 03:17:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:39,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:39,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:39,893 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:39,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:17:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:40,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:17:40,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:40,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:43,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874434232] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:43,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:17:43,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-11-29 03:17:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653990291] [2023-11-29 03:17:43,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:43,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 03:17:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 03:17:43,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:17:43,276 INFO L87 Difference]: Start difference. First operand 27534 states and 34971 transitions. Second operand has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 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 03:17:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:56,110 INFO L93 Difference]: Finished difference Result 64842 states and 80701 transitions. [2023-11-29 03:17:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-11-29 03:17:56,111 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 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 03:17:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:56,152 INFO L225 Difference]: With dead ends: 64842 [2023-11-29 03:17:56,152 INFO L226 Difference]: Without dead ends: 46820 [2023-11-29 03:17:56,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5331 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2807, Invalid=15825, Unknown=0, NotChecked=0, Total=18632 [2023-11-29 03:17:56,163 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 14292 mSDsluCounter, 18693 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14292 SdHoareTripleChecker+Valid, 20216 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:56,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14292 Valid, 20216 Invalid, 1954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:17:56,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46820 states. [2023-11-29 03:17:59,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46820 to 33705. [2023-11-29 03:17:59,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33705 states, 33703 states have (on average 1.2467436133281904) internal successors, (42019), 33704 states have internal predecessors, (42019), 0 states have call successors, (0), 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 03:17:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33705 states to 33705 states and 42019 transitions. [2023-11-29 03:17:59,157 INFO L78 Accepts]: Start accepts. Automaton has 33705 states and 42019 transitions. Word has length 114 [2023-11-29 03:17:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:59,157 INFO L495 AbstractCegarLoop]: Abstraction has 33705 states and 42019 transitions. [2023-11-29 03:17:59,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 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 03:17:59,157 INFO L276 IsEmpty]: Start isEmpty. Operand 33705 states and 42019 transitions. [2023-11-29 03:17:59,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 03:17:59,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:59,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:17:59,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:17:59,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 03:17:59,362 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:59,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:59,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1524897256, now seen corresponding path program 1 times [2023-11-29 03:17:59,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:59,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495139034] [2023-11-29 03:17:59,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:59,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:00,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:00,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495139034] [2023-11-29 03:18:00,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495139034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:00,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120182416] [2023-11-29 03:18:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:00,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:00,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:00,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:00,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:18:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:00,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:18:00,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:01,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:18:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:04,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120182416] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:18:04,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:18:04,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-11-29 03:18:04,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024065088] [2023-11-29 03:18:04,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:18:04,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 03:18:04,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 03:18:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:18:04,133 INFO L87 Difference]: Start difference. First operand 33705 states and 42019 transitions. Second operand has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 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 03:18:09,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:09,763 INFO L93 Difference]: Finished difference Result 59146 states and 72974 transitions. [2023-11-29 03:18:09,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 03:18:09,764 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 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 03:18:09,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:09,800 INFO L225 Difference]: With dead ends: 59146 [2023-11-29 03:18:09,800 INFO L226 Difference]: Without dead ends: 40606 [2023-11-29 03:18:09,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=859, Invalid=3047, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 03:18:09,809 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 21103 mSDsluCounter, 12323 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21103 SdHoareTripleChecker+Valid, 13838 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:09,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21103 Valid, 13838 Invalid, 1011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:18:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40606 states. [2023-11-29 03:18:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40606 to 33705. [2023-11-29 03:18:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33705 states, 33703 states have (on average 1.2382873928136962) internal successors, (41734), 33704 states have internal predecessors, (41734), 0 states have call successors, (0), 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 03:18:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33705 states to 33705 states and 41734 transitions. [2023-11-29 03:18:12,800 INFO L78 Accepts]: Start accepts. Automaton has 33705 states and 41734 transitions. Word has length 115 [2023-11-29 03:18:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:12,801 INFO L495 AbstractCegarLoop]: Abstraction has 33705 states and 41734 transitions. [2023-11-29 03:18:12,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 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 03:18:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 33705 states and 41734 transitions. [2023-11-29 03:18:12,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 03:18:12,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:12,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:18:12,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:18:13,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 03:18:13,005 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:13,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1002870552, now seen corresponding path program 1 times [2023-11-29 03:18:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708507068] [2023-11-29 03:18:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:13,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:13,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:13,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708507068] [2023-11-29 03:18:13,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708507068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:13,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616555062] [2023-11-29 03:18:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:13,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:13,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:13,861 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:13,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:18:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:14,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:18:14,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:14,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:18:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:17,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616555062] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:18:17,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:18:17,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-11-29 03:18:17,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958552738] [2023-11-29 03:18:17,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:18:17,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 03:18:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 03:18:17,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:18:17,002 INFO L87 Difference]: Start difference. First operand 33705 states and 41734 transitions. Second operand has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 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 03:18:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:20,894 INFO L93 Difference]: Finished difference Result 52982 states and 65377 transitions. [2023-11-29 03:18:20,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:18:20,895 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 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 03:18:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:20,923 INFO L225 Difference]: With dead ends: 52982 [2023-11-29 03:18:20,923 INFO L226 Difference]: Without dead ends: 38136 [2023-11-29 03:18:20,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=394, Invalid=1328, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 03:18:20,930 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 13596 mSDsluCounter, 9284 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13596 SdHoareTripleChecker+Valid, 10799 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:20,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13596 Valid, 10799 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:18:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38136 states. [2023-11-29 03:18:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38136 to 33705. [2023-11-29 03:18:23,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33705 states, 33703 states have (on average 1.2308103136219328) internal successors, (41482), 33704 states have internal predecessors, (41482), 0 states have call successors, (0), 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 03:18:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33705 states to 33705 states and 41482 transitions. [2023-11-29 03:18:23,982 INFO L78 Accepts]: Start accepts. Automaton has 33705 states and 41482 transitions. Word has length 115 [2023-11-29 03:18:23,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:23,982 INFO L495 AbstractCegarLoop]: Abstraction has 33705 states and 41482 transitions. [2023-11-29 03:18:23,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 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 03:18:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 33705 states and 41482 transitions. [2023-11-29 03:18:23,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 03:18:23,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:23,986 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 03:18:23,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:18:24,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 03:18:24,187 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:24,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:24,187 INFO L85 PathProgramCache]: Analyzing trace with hash 110129570, now seen corresponding path program 1 times [2023-11-29 03:18:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:24,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259344660] [2023-11-29 03:18:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:24,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:25,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:25,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259344660] [2023-11-29 03:18:25,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259344660] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:18:25,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852300601] [2023-11-29 03:18:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:25,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:25,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:25,717 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:25,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:18:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:25,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 03:18:25,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:27,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:18:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:18:32,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852300601] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:18:32,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:18:32,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 57 [2023-11-29 03:18:32,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123786707] [2023-11-29 03:18:32,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:18:32,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 03:18:32,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:32,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 03:18:32,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 03:18:32,016 INFO L87 Difference]: Start difference. First operand 33705 states and 41482 transitions. Second operand has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:19:29,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:19:29,770 INFO L93 Difference]: Finished difference Result 74623 states and 90401 transitions. [2023-11-29 03:19:29,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-11-29 03:19:29,771 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-11-29 03:19:29,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:19:29,826 INFO L225 Difference]: With dead ends: 74623 [2023-11-29 03:19:29,826 INFO L226 Difference]: Without dead ends: 66955 [2023-11-29 03:19:29,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23428 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=8348, Invalid=59512, Unknown=0, NotChecked=0, Total=67860 [2023-11-29 03:19:29,837 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 23262 mSDsluCounter, 34829 mSDsCounter, 0 mSdLazyCounter, 4969 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23262 SdHoareTripleChecker+Valid, 36472 SdHoareTripleChecker+Invalid, 5295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 4969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:19:29,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23262 Valid, 36472 Invalid, 5295 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [326 Valid, 4969 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-29 03:19:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66955 states. [2023-11-29 03:19:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66955 to 39172. [2023-11-29 03:19:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39172 states, 39170 states have (on average 1.222976767934644) internal successors, (47904), 39171 states have internal predecessors, (47904), 0 states have call successors, (0), 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 03:19:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39172 states to 39172 states and 47904 transitions. [2023-11-29 03:19:34,124 INFO L78 Accepts]: Start accepts. Automaton has 39172 states and 47904 transitions. Word has length 116 [2023-11-29 03:19:34,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:19:34,124 INFO L495 AbstractCegarLoop]: Abstraction has 39172 states and 47904 transitions. [2023-11-29 03:19:34,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:19:34,125 INFO L276 IsEmpty]: Start isEmpty. Operand 39172 states and 47904 transitions. [2023-11-29 03:19:34,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 03:19:34,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:19:34,128 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 03:19:34,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:19:34,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:19:34,329 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:19:34,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:19:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1631714690, now seen corresponding path program 1 times [2023-11-29 03:19:34,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:19:34,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792528478] [2023-11-29 03:19:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:34,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:19:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:36,012 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 03:19:36,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:19:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792528478] [2023-11-29 03:19:36,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792528478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:19:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200883814] [2023-11-29 03:19:36,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:36,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:19:36,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:19:36,013 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:19:36,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:19:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:36,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 03:19:36,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:19:38,301 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 03:19:38,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:19:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:19:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200883814] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:19:43,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:19:43,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 21] total 62 [2023-11-29 03:19:43,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998135643] [2023-11-29 03:19:43,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:19:43,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 03:19:43,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:19:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 03:19:43,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3412, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 03:19:43,270 INFO L87 Difference]: Start difference. First operand 39172 states and 47904 transitions. Second operand has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 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 03:21:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:21:17,359 INFO L93 Difference]: Finished difference Result 93806 states and 112349 transitions. [2023-11-29 03:21:17,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 446 states. [2023-11-29 03:21:17,360 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 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 116 [2023-11-29 03:21:17,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:21:17,429 INFO L225 Difference]: With dead ends: 93806 [2023-11-29 03:21:17,429 INFO L226 Difference]: Without dead ends: 83097 [2023-11-29 03:21:17,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101927 ImplicationChecksByTransitivity, 76.2s TimeCoverageRelationStatistics Valid=23255, Invalid=232275, Unknown=0, NotChecked=0, Total=255530 [2023-11-29 03:21:17,449 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 19125 mSDsluCounter, 40829 mSDsCounter, 0 mSdLazyCounter, 10185 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19125 SdHoareTripleChecker+Valid, 42570 SdHoareTripleChecker+Invalid, 10446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 10185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:21:17,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19125 Valid, 42570 Invalid, 10446 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [261 Valid, 10185 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-11-29 03:21:17,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83097 states. [2023-11-29 03:21:22,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83097 to 42501. [2023-11-29 03:21:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42501 states, 42499 states have (on average 1.2196051671804042) internal successors, (51832), 42500 states have internal predecessors, (51832), 0 states have call successors, (0), 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 03:21:22,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42501 states to 42501 states and 51832 transitions. [2023-11-29 03:21:22,935 INFO L78 Accepts]: Start accepts. Automaton has 42501 states and 51832 transitions. Word has length 116 [2023-11-29 03:21:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:21:22,935 INFO L495 AbstractCegarLoop]: Abstraction has 42501 states and 51832 transitions. [2023-11-29 03:21:22,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 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 03:21:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 42501 states and 51832 transitions. [2023-11-29 03:21:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 03:21:22,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:21:22,939 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 03:21:22,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 03:21:23,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:21:23,139 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:21:23,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:21:23,140 INFO L85 PathProgramCache]: Analyzing trace with hash -321400638, now seen corresponding path program 1 times [2023-11-29 03:21:23,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:21:23,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047582830] [2023-11-29 03:21:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:21:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 03:21:23,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:21:23,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047582830] [2023-11-29 03:21:23,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047582830] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:21:23,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409913802] [2023-11-29 03:21:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:23,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:21:23,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:21:23,882 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:21:23,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:21:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:23,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:21:23,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:21:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:21:24,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:21:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:21:26,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409913802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:21:26,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:21:26,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 37 [2023-11-29 03:21:26,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768590241] [2023-11-29 03:21:26,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:21:26,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 03:21:26,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:21:26,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 03:21:26,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 03:21:26,626 INFO L87 Difference]: Start difference. First operand 42501 states and 51832 transitions. Second operand has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 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 03:21:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:21:38,032 INFO L93 Difference]: Finished difference Result 77358 states and 93793 transitions. [2023-11-29 03:21:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 03:21:38,033 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 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 116 [2023-11-29 03:21:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:21:38,071 INFO L225 Difference]: With dead ends: 77358 [2023-11-29 03:21:38,071 INFO L226 Difference]: Without dead ends: 48818 [2023-11-29 03:21:38,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1819, Invalid=6371, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 03:21:38,083 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 11429 mSDsluCounter, 17592 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11429 SdHoareTripleChecker+Valid, 19128 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:21:38,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11429 Valid, 19128 Invalid, 1802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:21:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48818 states. [2023-11-29 03:21:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48818 to 42369. [2023-11-29 03:21:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42369 states, 42367 states have (on average 1.21913281563481) internal successors, (51651), 42368 states have internal predecessors, (51651), 0 states have call successors, (0), 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 03:21:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42369 states to 42369 states and 51651 transitions. [2023-11-29 03:21:43,904 INFO L78 Accepts]: Start accepts. Automaton has 42369 states and 51651 transitions. Word has length 116 [2023-11-29 03:21:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:21:43,905 INFO L495 AbstractCegarLoop]: Abstraction has 42369 states and 51651 transitions. [2023-11-29 03:21:43,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 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 03:21:43,905 INFO L276 IsEmpty]: Start isEmpty. Operand 42369 states and 51651 transitions. [2023-11-29 03:21:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 03:21:43,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:21:43,908 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 03:21:43,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:21:44,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:21:44,109 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:21:44,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:21:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash -676106210, now seen corresponding path program 1 times [2023-11-29 03:21:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:21:44,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577789468] [2023-11-29 03:21:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:44,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:21:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:21:45,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:21:45,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577789468] [2023-11-29 03:21:45,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577789468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:21:45,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894572734] [2023-11-29 03:21:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:45,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:21:45,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:21:45,739 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:21:45,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:21:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:45,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:21:45,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:21:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:21:47,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:21:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:21:51,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894572734] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:21:51,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:21:51,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 18] total 57 [2023-11-29 03:21:51,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847706147] [2023-11-29 03:21:51,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:21:51,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 03:21:51,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:21:51,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 03:21:51,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2952, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 03:21:51,841 INFO L87 Difference]: Start difference. First operand 42369 states and 51651 transitions. Second operand has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 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 03:22:57,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:22:57,683 INFO L93 Difference]: Finished difference Result 111846 states and 134152 transitions. [2023-11-29 03:22:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-11-29 03:22:57,683 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 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 116 [2023-11-29 03:22:57,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:22:57,757 INFO L225 Difference]: With dead ends: 111846 [2023-11-29 03:22:57,757 INFO L226 Difference]: Without dead ends: 86312 [2023-11-29 03:22:57,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20770 ImplicationChecksByTransitivity, 48.3s TimeCoverageRelationStatistics Valid=8850, Invalid=52406, Unknown=0, NotChecked=0, Total=61256 [2023-11-29 03:22:57,776 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 26569 mSDsluCounter, 25598 mSDsCounter, 0 mSdLazyCounter, 4633 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26569 SdHoareTripleChecker+Valid, 27246 SdHoareTripleChecker+Invalid, 4984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:22:57,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26569 Valid, 27246 Invalid, 4984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [351 Valid, 4633 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-29 03:22:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86312 states. [2023-11-29 03:23:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86312 to 47753. [2023-11-29 03:23:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47753 states, 47751 states have (on average 1.2154091013800759) internal successors, (58037), 47752 states have internal predecessors, (58037), 0 states have call successors, (0), 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 03:23:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47753 states to 47753 states and 58037 transitions. [2023-11-29 03:23:05,750 INFO L78 Accepts]: Start accepts. Automaton has 47753 states and 58037 transitions. Word has length 116 [2023-11-29 03:23:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:23:05,750 INFO L495 AbstractCegarLoop]: Abstraction has 47753 states and 58037 transitions. [2023-11-29 03:23:05,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 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 03:23:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 47753 states and 58037 transitions. [2023-11-29 03:23:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 03:23:05,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:23:05,753 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 03:23:05,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 03:23:05,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:23:05,954 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:23:05,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:23:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1491845734, now seen corresponding path program 1 times [2023-11-29 03:23:05,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:23:05,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120411656] [2023-11-29 03:23:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:05,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:23:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:08,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:23:08,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120411656] [2023-11-29 03:23:08,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120411656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:23:08,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963442260] [2023-11-29 03:23:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:08,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:23:08,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:23:08,694 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:23:08,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7692d8db-c595-43b4-834f-393cb6fca745/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:23:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:08,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 03:23:08,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:23:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:19,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:23:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:31,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963442260] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:23:31,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:23:31,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35, 33] total 96 [2023-11-29 03:23:31,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101596666] [2023-11-29 03:23:31,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:23:31,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-29 03:23:31,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:23:31,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-29 03:23:31,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=8317, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 03:23:31,500 INFO L87 Difference]: Start difference. First operand 47753 states and 58037 transitions. Second operand has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)