./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ae09636d6d49c5a158b8afd2276e8412a0fd924126d4adf85602ed9f0284ed9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:45:52,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:45:53,003 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:45:53,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:45:53,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:45:53,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:45:53,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:45:53,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:45:53,062 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:45:53,063 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:45:53,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:45:53,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:45:53,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:45:53,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:45:53,067 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:45:53,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:45:53,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:45:53,071 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:45:53,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:45:53,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:45:53,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:45:53,076 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:45:53,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:45:53,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:45:53,077 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:45:53,078 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:45:53,078 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:45:53,078 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:45:53,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:45:53,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:45:53,079 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:45:53,080 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:45:53,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:45:53,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:45:53,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:45:53,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:45:53,085 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:45:53,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:45:53,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:45:53,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:45:53,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:45:53,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:45:53,087 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_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ae09636d6d49c5a158b8afd2276e8412a0fd924126d4adf85602ed9f0284ed9 [2024-11-08 17:45:53,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:45:53,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:45:53,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:45:53,484 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:45:53,485 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:45:53,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c Unable to find full path for "g++" [2024-11-08 17:45:55,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:45:56,468 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:45:56,469 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c [2024-11-08 17:45:56,524 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/data/f57e836f7/e2625fbfcb7443e7a79ed8713a67e278/FLAG5b08f57aa [2024-11-08 17:45:56,957 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/data/f57e836f7/e2625fbfcb7443e7a79ed8713a67e278 [2024-11-08 17:45:56,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:45:56,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:45:56,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:45:56,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:45:56,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:45:56,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:45:56" (1/1) ... [2024-11-08 17:45:56,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106a6eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:45:56, skipping insertion in model container [2024-11-08 17:45:56,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:45:56" (1/1) ... [2024-11-08 17:45:57,159 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:45:57,730 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c[15519,15532] [2024-11-08 17:45:57,861 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c[22580,22593] [2024-11-08 17:45:59,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:45:59,215 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:45:59,281 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c[15519,15532] [2024-11-08 17:45:59,297 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/sv-benchmarks/c/combinations/pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c[22580,22593] [2024-11-08 17:45:59,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:46:00,027 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:46:00,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00 WrapperNode [2024-11-08 17:46:00,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:46:00,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:46:00,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:46:00,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:46:00,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:00,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:00,523 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5158 [2024-11-08 17:46:00,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:46:00,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:46:00,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:46:00,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:46:00,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:00,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:00,586 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:00,894 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 17:46:00,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:00,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:01,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:01,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:01,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:01,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:01,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:46:01,511 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:46:01,511 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:46:01,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:46:01,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (1/1) ... [2024-11-08 17:46:01,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:46:01,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:46:01,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:46:01,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:46:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:46:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:46:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:46:01,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:46:01,784 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:46:01,787 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:46:08,596 INFO L? ?]: Removed 750 outVars from TransFormulas that were not future-live. [2024-11-08 17:46:08,596 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:46:08,630 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:46:08,630 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 17:46:08,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:46:08 BoogieIcfgContainer [2024-11-08 17:46:08,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:46:08,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:46:08,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:46:08,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:46:08,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:45:56" (1/3) ... [2024-11-08 17:46:08,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11989d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:46:08, skipping insertion in model container [2024-11-08 17:46:08,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:46:00" (2/3) ... [2024-11-08 17:46:08,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11989d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:46:08, skipping insertion in model container [2024-11-08 17:46:08,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:46:08" (3/3) ... [2024-11-08 17:46:08,640 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals+Problem12_label04.c [2024-11-08 17:46:08,661 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:46:08,661 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 17:46:08,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:46:08,759 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4255ec61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:46:08,760 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 17:46:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 915 states, 912 states have (on average 1.9035087719298245) internal successors, (1736), 914 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 17:46:08,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:08,784 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:08,784 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:08,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash -811412779, now seen corresponding path program 1 times [2024-11-08 17:46:08,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:08,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559291444] [2024-11-08 17:46:08,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:08,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559291444] [2024-11-08 17:46:09,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559291444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:09,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:09,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:46:09,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106811645] [2024-11-08 17:46:09,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:09,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:46:09,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:46:09,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:46:09,171 INFO L87 Difference]: Start difference. First operand has 915 states, 912 states have (on average 1.9035087719298245) internal successors, (1736), 914 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:09,293 INFO L93 Difference]: Finished difference Result 1784 states and 3384 transitions. [2024-11-08 17:46:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:46:09,300 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-11-08 17:46:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:09,332 INFO L225 Difference]: With dead ends: 1784 [2024-11-08 17:46:09,332 INFO L226 Difference]: Without dead ends: 849 [2024-11-08 17:46:09,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:46:09,347 INFO L432 NwaCegarLoop]: 1671 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:09,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-08 17:46:09,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2024-11-08 17:46:09,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.8925619834710743) internal successors, (1603), 848 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1603 transitions. [2024-11-08 17:46:09,472 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1603 transitions. Word has length 27 [2024-11-08 17:46:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:09,472 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1603 transitions. [2024-11-08 17:46:09,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:09,473 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1603 transitions. [2024-11-08 17:46:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-08 17:46:09,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:09,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:09,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:46:09,476 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:09,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:09,478 INFO L85 PathProgramCache]: Analyzing trace with hash -388710953, now seen corresponding path program 1 times [2024-11-08 17:46:09,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:09,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866515981] [2024-11-08 17:46:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:09,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:09,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:09,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866515981] [2024-11-08 17:46:09,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866515981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:09,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:09,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:46:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070243071] [2024-11-08 17:46:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:09,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:46:09,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:09,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:46:09,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:46:09,839 INFO L87 Difference]: Start difference. First operand 849 states and 1603 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:10,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:10,031 INFO L93 Difference]: Finished difference Result 902 states and 1685 transitions. [2024-11-08 17:46:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:46:10,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-11-08 17:46:10,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:10,035 INFO L225 Difference]: With dead ends: 902 [2024-11-08 17:46:10,036 INFO L226 Difference]: Without dead ends: 849 [2024-11-08 17:46:10,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:46:10,038 INFO L432 NwaCegarLoop]: 1601 mSDtfsCounter, 0 mSDsluCounter, 4758 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6359 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:10,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6359 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:46:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-08 17:46:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2024-11-08 17:46:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.845336481700118) internal successors, (1563), 848 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1563 transitions. [2024-11-08 17:46:10,062 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1563 transitions. Word has length 27 [2024-11-08 17:46:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:10,062 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1563 transitions. [2024-11-08 17:46:10,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1563 transitions. [2024-11-08 17:46:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 17:46:10,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:10,064 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:10,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:46:10,065 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:10,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:10,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1207299282, now seen corresponding path program 1 times [2024-11-08 17:46:10,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:10,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075232028] [2024-11-08 17:46:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:10,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:10,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:10,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075232028] [2024-11-08 17:46:10,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075232028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:10,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:10,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:46:10,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625440246] [2024-11-08 17:46:10,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:10,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:10,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:10,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:10,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:10,197 INFO L87 Difference]: Start difference. First operand 849 states and 1563 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:15,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:15,310 INFO L93 Difference]: Finished difference Result 2353 states and 4436 transitions. [2024-11-08 17:46:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:15,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 17:46:15,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:15,325 INFO L225 Difference]: With dead ends: 2353 [2024-11-08 17:46:15,325 INFO L226 Difference]: Without dead ends: 1600 [2024-11-08 17:46:15,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:15,330 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 878 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:15,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 201 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-08 17:46:15,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2024-11-08 17:46:15,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1600. [2024-11-08 17:46:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1598 states have (on average 1.8385481852315395) internal successors, (2938), 1599 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2938 transitions. [2024-11-08 17:46:15,381 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2938 transitions. Word has length 61 [2024-11-08 17:46:15,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:15,382 INFO L471 AbstractCegarLoop]: Abstraction has 1600 states and 2938 transitions. [2024-11-08 17:46:15,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2938 transitions. [2024-11-08 17:46:15,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 17:46:15,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:15,388 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:15,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:46:15,389 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:15,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:15,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1388667403, now seen corresponding path program 1 times [2024-11-08 17:46:15,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:15,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84141296] [2024-11-08 17:46:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:15,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:15,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:15,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84141296] [2024-11-08 17:46:15,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84141296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:15,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:15,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:46:15,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761366925] [2024-11-08 17:46:15,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:15,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:46:15,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:15,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:46:15,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:46:15,727 INFO L87 Difference]: Start difference. First operand 1600 states and 2938 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2024-11-08 17:46:16,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:16,310 INFO L93 Difference]: Finished difference Result 2188 states and 3874 transitions. [2024-11-08 17:46:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:46:16,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 [2024-11-08 17:46:16,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:16,322 INFO L225 Difference]: With dead ends: 2188 [2024-11-08 17:46:16,322 INFO L226 Difference]: Without dead ends: 2139 [2024-11-08 17:46:16,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:46:16,328 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 9710 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9710 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:16,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9710 Valid, 3724 Invalid, 218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:46:16,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-11-08 17:46:16,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1647. [2024-11-08 17:46:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1645 states have (on average 1.8316109422492401) internal successors, (3013), 1646 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 3013 transitions. [2024-11-08 17:46:16,398 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 3013 transitions. Word has length 66 [2024-11-08 17:46:16,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:16,401 INFO L471 AbstractCegarLoop]: Abstraction has 1647 states and 3013 transitions. [2024-11-08 17:46:16,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2024-11-08 17:46:16,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 3013 transitions. [2024-11-08 17:46:16,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 17:46:16,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:16,409 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:16,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:46:16,409 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:16,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:16,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1653818299, now seen corresponding path program 1 times [2024-11-08 17:46:16,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:16,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85777739] [2024-11-08 17:46:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:16,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:16,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85777739] [2024-11-08 17:46:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85777739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:16,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:16,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:16,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634687526] [2024-11-08 17:46:16,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:16,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:16,670 INFO L87 Difference]: Start difference. First operand 1647 states and 3013 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:16,741 INFO L93 Difference]: Finished difference Result 1828 states and 3300 transitions. [2024-11-08 17:46:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:16,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 [2024-11-08 17:46:16,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:16,751 INFO L225 Difference]: With dead ends: 1828 [2024-11-08 17:46:16,751 INFO L226 Difference]: Without dead ends: 1732 [2024-11-08 17:46:16,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:16,754 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 1490 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:16,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1634 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-11-08 17:46:16,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2024-11-08 17:46:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1728 states have (on average 1.8188657407407407) internal successors, (3143), 1729 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 3143 transitions. [2024-11-08 17:46:16,819 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 3143 transitions. Word has length 68 [2024-11-08 17:46:16,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:16,819 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 3143 transitions. [2024-11-08 17:46:16,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:16,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 3143 transitions. [2024-11-08 17:46:16,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 17:46:16,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:16,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:16,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:46:16,824 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:16,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1720311811, now seen corresponding path program 1 times [2024-11-08 17:46:16,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:16,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304657078] [2024-11-08 17:46:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:16,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:17,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:17,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304657078] [2024-11-08 17:46:17,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304657078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:17,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:17,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:46:17,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241029565] [2024-11-08 17:46:17,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:17,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:46:17,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:17,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:46:17,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:46:17,489 INFO L87 Difference]: Start difference. First operand 1730 states and 3143 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:17,980 INFO L93 Difference]: Finished difference Result 1911 states and 3427 transitions. [2024-11-08 17:46:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:46:17,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 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 [2024-11-08 17:46:17,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:17,991 INFO L225 Difference]: With dead ends: 1911 [2024-11-08 17:46:17,991 INFO L226 Difference]: Without dead ends: 1732 [2024-11-08 17:46:17,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:46:17,994 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 8992 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8992 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:17,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8992 Valid, 1928 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:46:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2024-11-08 17:46:18,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1730. [2024-11-08 17:46:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1728 states have (on average 1.8177083333333333) internal successors, (3141), 1729 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 3141 transitions. [2024-11-08 17:46:18,061 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 3141 transitions. Word has length 68 [2024-11-08 17:46:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:18,061 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 3141 transitions. [2024-11-08 17:46:18,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 3141 transitions. [2024-11-08 17:46:18,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 17:46:18,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:18,064 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:18,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:46:18,064 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:18,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1375335590, now seen corresponding path program 1 times [2024-11-08 17:46:18,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:18,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238818230] [2024-11-08 17:46:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:18,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:18,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:18,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238818230] [2024-11-08 17:46:18,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238818230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:18,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:18,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:46:18,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474519710] [2024-11-08 17:46:18,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:18,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:46:18,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:18,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:46:18,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:46:18,468 INFO L87 Difference]: Start difference. First operand 1730 states and 3141 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:18,540 INFO L93 Difference]: Finished difference Result 1738 states and 3150 transitions. [2024-11-08 17:46:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:46:18,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-08 17:46:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:18,550 INFO L225 Difference]: With dead ends: 1738 [2024-11-08 17:46:18,550 INFO L226 Difference]: Without dead ends: 1736 [2024-11-08 17:46:18,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:46:18,554 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 0 mSDsluCounter, 4671 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6231 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:18,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6231 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2024-11-08 17:46:18,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1736. [2024-11-08 17:46:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1734 states have (on average 1.8143021914648212) internal successors, (3146), 1735 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:18,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 3146 transitions. [2024-11-08 17:46:18,603 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 3146 transitions. Word has length 69 [2024-11-08 17:46:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:18,604 INFO L471 AbstractCegarLoop]: Abstraction has 1736 states and 3146 transitions. [2024-11-08 17:46:18,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:18,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 3146 transitions. [2024-11-08 17:46:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:46:18,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:18,606 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:18,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:46:18,607 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:18,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash -103737533, now seen corresponding path program 1 times [2024-11-08 17:46:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:18,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859100639] [2024-11-08 17:46:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:18,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:18,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:18,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859100639] [2024-11-08 17:46:18,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859100639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:18,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:18,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:18,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714581502] [2024-11-08 17:46:18,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:18,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:18,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:18,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:18,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:18,791 INFO L87 Difference]: Start difference. First operand 1736 states and 3146 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:18,847 INFO L93 Difference]: Finished difference Result 1935 states and 3452 transitions. [2024-11-08 17:46:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:18,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2024-11-08 17:46:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:18,858 INFO L225 Difference]: With dead ends: 1935 [2024-11-08 17:46:18,858 INFO L226 Difference]: Without dead ends: 1833 [2024-11-08 17:46:18,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:18,862 INFO L432 NwaCegarLoop]: 1625 mSDtfsCounter, 1506 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:18,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1704 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2024-11-08 17:46:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1831. [2024-11-08 17:46:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1829 states have (on average 1.7987971569163477) internal successors, (3290), 1830 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 3290 transitions. [2024-11-08 17:46:18,926 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 3290 transitions. Word has length 70 [2024-11-08 17:46:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:18,927 INFO L471 AbstractCegarLoop]: Abstraction has 1831 states and 3290 transitions. [2024-11-08 17:46:18,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 3290 transitions. [2024-11-08 17:46:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:46:18,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:18,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:18,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:46:18,932 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:18,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:18,933 INFO L85 PathProgramCache]: Analyzing trace with hash 59177027, now seen corresponding path program 1 times [2024-11-08 17:46:18,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:18,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055854663] [2024-11-08 17:46:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:18,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:19,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055854663] [2024-11-08 17:46:19,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055854663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:19,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:19,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020664701] [2024-11-08 17:46:19,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:19,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:19,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:19,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:19,035 INFO L87 Difference]: Start difference. First operand 1831 states and 3290 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:19,095 INFO L93 Difference]: Finished difference Result 2361 states and 4102 transitions. [2024-11-08 17:46:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:19,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2024-11-08 17:46:19,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:19,107 INFO L225 Difference]: With dead ends: 2361 [2024-11-08 17:46:19,107 INFO L226 Difference]: Without dead ends: 2084 [2024-11-08 17:46:19,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:19,111 INFO L432 NwaCegarLoop]: 1627 mSDtfsCounter, 1504 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:19,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1710 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2024-11-08 17:46:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2082. [2024-11-08 17:46:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2080 states have (on average 1.7634615384615384) internal successors, (3668), 2081 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 3668 transitions. [2024-11-08 17:46:19,178 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 3668 transitions. Word has length 70 [2024-11-08 17:46:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:19,178 INFO L471 AbstractCegarLoop]: Abstraction has 2082 states and 3668 transitions. [2024-11-08 17:46:19,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 3668 transitions. [2024-11-08 17:46:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:46:19,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:19,180 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:19,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:46:19,181 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:19,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1561295427, now seen corresponding path program 1 times [2024-11-08 17:46:19,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:19,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012623383] [2024-11-08 17:46:19,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:19,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:19,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:19,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012623383] [2024-11-08 17:46:19,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012623383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:19,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:19,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:19,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048099507] [2024-11-08 17:46:19,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:19,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:19,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:19,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:19,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:19,288 INFO L87 Difference]: Start difference. First operand 2082 states and 3668 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:19,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:19,357 INFO L93 Difference]: Finished difference Result 3090 states and 5194 transitions. [2024-11-08 17:46:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:19,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2024-11-08 17:46:19,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:19,369 INFO L225 Difference]: With dead ends: 3090 [2024-11-08 17:46:19,369 INFO L226 Difference]: Without dead ends: 2562 [2024-11-08 17:46:19,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:19,372 INFO L432 NwaCegarLoop]: 1615 mSDtfsCounter, 1500 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:19,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1706 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:19,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2024-11-08 17:46:19,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2560. [2024-11-08 17:46:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2558 states have (on average 1.710711493354183) internal successors, (4376), 2559 states have internal predecessors, (4376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4376 transitions. [2024-11-08 17:46:19,453 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4376 transitions. Word has length 70 [2024-11-08 17:46:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:19,454 INFO L471 AbstractCegarLoop]: Abstraction has 2560 states and 4376 transitions. [2024-11-08 17:46:19,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4376 transitions. [2024-11-08 17:46:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:46:19,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:19,455 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:19,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:46:19,456 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:19,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash -654173373, now seen corresponding path program 1 times [2024-11-08 17:46:19,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:19,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244681602] [2024-11-08 17:46:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:19,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:19,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:19,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244681602] [2024-11-08 17:46:19,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244681602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:19,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:19,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:19,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407830405] [2024-11-08 17:46:19,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:19,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:19,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:19,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:19,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:19,554 INFO L87 Difference]: Start difference. First operand 2560 states and 4376 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:19,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:19,650 INFO L93 Difference]: Finished difference Result 4476 states and 7234 transitions. [2024-11-08 17:46:19,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:19,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2024-11-08 17:46:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:19,666 INFO L225 Difference]: With dead ends: 4476 [2024-11-08 17:46:19,666 INFO L226 Difference]: Without dead ends: 3470 [2024-11-08 17:46:19,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:19,670 INFO L432 NwaCegarLoop]: 1613 mSDtfsCounter, 1498 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:19,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2024-11-08 17:46:19,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 3468. [2024-11-08 17:46:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3466 states have (on average 1.6433929601846509) internal successors, (5696), 3467 states have internal predecessors, (5696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 5696 transitions. [2024-11-08 17:46:19,793 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 5696 transitions. Word has length 70 [2024-11-08 17:46:19,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:19,794 INFO L471 AbstractCegarLoop]: Abstraction has 3468 states and 5696 transitions. [2024-11-08 17:46:19,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 5696 transitions. [2024-11-08 17:46:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:46:19,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:19,795 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:19,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:46:19,796 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:19,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:19,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1126759491, now seen corresponding path program 1 times [2024-11-08 17:46:19,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:19,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391051481] [2024-11-08 17:46:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:19,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:19,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391051481] [2024-11-08 17:46:19,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391051481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:19,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:19,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:19,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615609109] [2024-11-08 17:46:19,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:19,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:19,893 INFO L87 Difference]: Start difference. First operand 3468 states and 5696 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:20,038 INFO L93 Difference]: Finished difference Result 7104 states and 11026 transitions. [2024-11-08 17:46:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:20,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2024-11-08 17:46:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:20,061 INFO L225 Difference]: With dead ends: 7104 [2024-11-08 17:46:20,062 INFO L226 Difference]: Without dead ends: 5190 [2024-11-08 17:46:20,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:20,066 INFO L432 NwaCegarLoop]: 1611 mSDtfsCounter, 1496 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:20,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1710 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:20,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2024-11-08 17:46:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 5188. [2024-11-08 17:46:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 5186 states have (on average 1.5703817971461627) internal successors, (8144), 5187 states have internal predecessors, (8144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 8144 transitions. [2024-11-08 17:46:20,282 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 8144 transitions. Word has length 70 [2024-11-08 17:46:20,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:20,283 INFO L471 AbstractCegarLoop]: Abstraction has 5188 states and 8144 transitions. [2024-11-08 17:46:20,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 8144 transitions. [2024-11-08 17:46:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:46:20,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:20,285 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:20,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:46:20,285 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:20,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash 323033411, now seen corresponding path program 1 times [2024-11-08 17:46:20,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:20,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461452119] [2024-11-08 17:46:20,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:20,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:20,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:20,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461452119] [2024-11-08 17:46:20,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461452119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:20,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:20,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:20,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202631923] [2024-11-08 17:46:20,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:20,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:20,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:20,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:20,397 INFO L87 Difference]: Start difference. First operand 5188 states and 8144 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:20,697 INFO L93 Difference]: Finished difference Result 12072 states and 18034 transitions. [2024-11-08 17:46:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:20,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2024-11-08 17:46:20,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:20,725 INFO L225 Difference]: With dead ends: 12072 [2024-11-08 17:46:20,725 INFO L226 Difference]: Without dead ends: 8438 [2024-11-08 17:46:20,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:20,731 INFO L432 NwaCegarLoop]: 1625 mSDtfsCounter, 1502 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:20,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1712 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8438 states. [2024-11-08 17:46:21,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8438 to 8436. [2024-11-08 17:46:21,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8436 states, 8434 states have (on average 1.5005928385107896) internal successors, (12656), 8435 states have internal predecessors, (12656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:21,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8436 states to 8436 states and 12656 transitions. [2024-11-08 17:46:21,046 INFO L78 Accepts]: Start accepts. Automaton has 8436 states and 12656 transitions. Word has length 70 [2024-11-08 17:46:21,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:21,047 INFO L471 AbstractCegarLoop]: Abstraction has 8436 states and 12656 transitions. [2024-11-08 17:46:21,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand 8436 states and 12656 transitions. [2024-11-08 17:46:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 17:46:21,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:21,052 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:21,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:46:21,053 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:21,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2097607873, now seen corresponding path program 1 times [2024-11-08 17:46:21,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:21,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690048117] [2024-11-08 17:46:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:46:21,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:21,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690048117] [2024-11-08 17:46:21,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690048117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:21,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:21,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:46:21,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663592871] [2024-11-08 17:46:21,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:21,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:46:21,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:46:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:46:21,392 INFO L87 Difference]: Start difference. First operand 8436 states and 12656 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:22,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:22,793 INFO L93 Difference]: Finished difference Result 49154 states and 70551 transitions. [2024-11-08 17:46:22,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:46:22,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 17:46:22,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:22,913 INFO L225 Difference]: With dead ends: 49154 [2024-11-08 17:46:22,913 INFO L226 Difference]: Without dead ends: 44288 [2024-11-08 17:46:22,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:46:22,931 INFO L432 NwaCegarLoop]: 1638 mSDtfsCounter, 8088 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8088 SdHoareTripleChecker+Valid, 4041 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:22,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8088 Valid, 4041 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:46:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44288 states. [2024-11-08 17:46:23,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44288 to 14324. [2024-11-08 17:46:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14324 states, 14322 states have (on average 1.4623655913978495) internal successors, (20944), 14323 states have internal predecessors, (20944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:24,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14324 states to 14324 states and 20944 transitions. [2024-11-08 17:46:24,022 INFO L78 Accepts]: Start accepts. Automaton has 14324 states and 20944 transitions. Word has length 92 [2024-11-08 17:46:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:24,023 INFO L471 AbstractCegarLoop]: Abstraction has 14324 states and 20944 transitions. [2024-11-08 17:46:24,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 14324 states and 20944 transitions. [2024-11-08 17:46:24,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 17:46:24,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:24,031 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:24,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:46:24,031 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:24,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:24,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1934693313, now seen corresponding path program 1 times [2024-11-08 17:46:24,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:24,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662685909] [2024-11-08 17:46:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:46:24,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:24,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662685909] [2024-11-08 17:46:24,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662685909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:24,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:24,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:46:24,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443941497] [2024-11-08 17:46:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:24,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:46:24,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:24,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:46:24,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:46:24,432 INFO L87 Difference]: Start difference. First operand 14324 states and 20944 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:26,098 INFO L93 Difference]: Finished difference Result 56034 states and 80279 transitions. [2024-11-08 17:46:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:46:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 17:46:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:26,228 INFO L225 Difference]: With dead ends: 56034 [2024-11-08 17:46:26,228 INFO L226 Difference]: Without dead ends: 49152 [2024-11-08 17:46:26,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:46:26,244 INFO L432 NwaCegarLoop]: 1637 mSDtfsCounter, 8090 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8090 SdHoareTripleChecker+Valid, 3998 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:26,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8090 Valid, 3998 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:46:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49152 states. [2024-11-08 17:46:27,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49152 to 23636. [2024-11-08 17:46:27,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23636 states, 23634 states have (on average 1.4399593805534399) internal successors, (34032), 23635 states have internal predecessors, (34032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23636 states to 23636 states and 34032 transitions. [2024-11-08 17:46:27,594 INFO L78 Accepts]: Start accepts. Automaton has 23636 states and 34032 transitions. Word has length 92 [2024-11-08 17:46:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:27,594 INFO L471 AbstractCegarLoop]: Abstraction has 23636 states and 34032 transitions. [2024-11-08 17:46:27,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 23636 states and 34032 transitions. [2024-11-08 17:46:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 17:46:27,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:27,600 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:27,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:46:27,601 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:27,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash -432574913, now seen corresponding path program 1 times [2024-11-08 17:46:27,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:27,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102700067] [2024-11-08 17:46:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:27,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:46:27,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:27,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102700067] [2024-11-08 17:46:27,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102700067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:27,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:46:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65260837] [2024-11-08 17:46:27,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:27,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:46:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:27,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:46:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:46:27,938 INFO L87 Difference]: Start difference. First operand 23636 states and 34032 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:29,340 INFO L93 Difference]: Finished difference Result 62914 states and 89975 transitions. [2024-11-08 17:46:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:46:29,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 17:46:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:29,572 INFO L225 Difference]: With dead ends: 62914 [2024-11-08 17:46:29,572 INFO L226 Difference]: Without dead ends: 56032 [2024-11-08 17:46:29,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:46:29,588 INFO L432 NwaCegarLoop]: 1635 mSDtfsCounter, 8136 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8136 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:29,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8136 Valid, 3991 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:46:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56032 states. [2024-11-08 17:46:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56032 to 30516. [2024-11-08 17:46:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30516 states, 30514 states have (on average 1.4330471259094186) internal successors, (43728), 30515 states have internal predecessors, (43728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30516 states to 30516 states and 43728 transitions. [2024-11-08 17:46:31,346 INFO L78 Accepts]: Start accepts. Automaton has 30516 states and 43728 transitions. Word has length 92 [2024-11-08 17:46:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:31,347 INFO L471 AbstractCegarLoop]: Abstraction has 30516 states and 43728 transitions. [2024-11-08 17:46:31,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 30516 states and 43728 transitions. [2024-11-08 17:46:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 17:46:31,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:31,352 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:31,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 17:46:31,353 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:31,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1646923583, now seen corresponding path program 1 times [2024-11-08 17:46:31,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:31,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510920759] [2024-11-08 17:46:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:31,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:31,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 17:46:31,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:31,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510920759] [2024-11-08 17:46:31,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510920759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:31,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:31,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:46:31,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591760130] [2024-11-08 17:46:31,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:31,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:46:31,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:31,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:46:31,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:46:31,690 INFO L87 Difference]: Start difference. First operand 30516 states and 43728 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:33,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:33,514 INFO L93 Difference]: Finished difference Result 69794 states and 99671 transitions. [2024-11-08 17:46:33,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:46:33,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 17:46:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:33,625 INFO L225 Difference]: With dead ends: 69794 [2024-11-08 17:46:33,625 INFO L226 Difference]: Without dead ends: 62912 [2024-11-08 17:46:33,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:46:33,646 INFO L432 NwaCegarLoop]: 1633 mSDtfsCounter, 8190 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8190 SdHoareTripleChecker+Valid, 3975 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:33,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8190 Valid, 3975 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:46:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62912 states. [2024-11-08 17:46:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62912 to 37396. [2024-11-08 17:46:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37396 states, 37394 states have (on average 1.4286783976038937) internal successors, (53424), 37395 states have internal predecessors, (53424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37396 states to 37396 states and 53424 transitions. [2024-11-08 17:46:35,039 INFO L78 Accepts]: Start accepts. Automaton has 37396 states and 53424 transitions. Word has length 92 [2024-11-08 17:46:35,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:35,040 INFO L471 AbstractCegarLoop]: Abstraction has 37396 states and 53424 transitions. [2024-11-08 17:46:35,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 37396 states and 53424 transitions. [2024-11-08 17:46:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 17:46:35,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:35,048 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:35,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 17:46:35,049 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:35,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash -867110849, now seen corresponding path program 1 times [2024-11-08 17:46:35,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:35,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465374826] [2024-11-08 17:46:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 17:46:35,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:35,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465374826] [2024-11-08 17:46:35,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465374826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:35,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:35,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:46:35,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631769427] [2024-11-08 17:46:35,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:35,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:46:35,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:35,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:46:35,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:46:35,381 INFO L87 Difference]: Start difference. First operand 37396 states and 53424 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:37,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:37,285 INFO L93 Difference]: Finished difference Result 76674 states and 109367 transitions. [2024-11-08 17:46:37,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:46:37,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 17:46:37,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:37,360 INFO L225 Difference]: With dead ends: 76674 [2024-11-08 17:46:37,361 INFO L226 Difference]: Without dead ends: 69792 [2024-11-08 17:46:37,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:46:37,379 INFO L432 NwaCegarLoop]: 1633 mSDtfsCounter, 8102 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8102 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:37,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8102 Valid, 4018 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:46:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69792 states. [2024-11-08 17:46:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69792 to 44276. [2024-11-08 17:46:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44276 states, 44274 states have (on average 1.425667434611736) internal successors, (63120), 44275 states have internal predecessors, (63120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44276 states to 44276 states and 63120 transitions. [2024-11-08 17:46:38,760 INFO L78 Accepts]: Start accepts. Automaton has 44276 states and 63120 transitions. Word has length 92 [2024-11-08 17:46:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:38,761 INFO L471 AbstractCegarLoop]: Abstraction has 44276 states and 63120 transitions. [2024-11-08 17:46:38,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 44276 states and 63120 transitions. [2024-11-08 17:46:38,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 17:46:38,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:38,766 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:38,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 17:46:38,767 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:38,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:38,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1670836929, now seen corresponding path program 1 times [2024-11-08 17:46:38,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:38,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367317312] [2024-11-08 17:46:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:38,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 17:46:38,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:38,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367317312] [2024-11-08 17:46:38,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367317312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:38,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:38,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:46:38,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141135403] [2024-11-08 17:46:38,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:38,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:46:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:46:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:46:38,994 INFO L87 Difference]: Start difference. First operand 44276 states and 63120 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:41,434 INFO L93 Difference]: Finished difference Result 83554 states and 119063 transitions. [2024-11-08 17:46:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:46:41,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-08 17:46:41,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:41,532 INFO L225 Difference]: With dead ends: 83554 [2024-11-08 17:46:41,532 INFO L226 Difference]: Without dead ends: 76672 [2024-11-08 17:46:41,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:46:41,554 INFO L432 NwaCegarLoop]: 1632 mSDtfsCounter, 8037 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8037 SdHoareTripleChecker+Valid, 4172 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:41,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8037 Valid, 4172 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:46:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76672 states. [2024-11-08 17:46:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76672 to 51156. [2024-11-08 17:46:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51156 states, 51154 states have (on average 1.4234663955897877) internal successors, (72816), 51155 states have internal predecessors, (72816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51156 states to 51156 states and 72816 transitions. [2024-11-08 17:46:43,179 INFO L78 Accepts]: Start accepts. Automaton has 51156 states and 72816 transitions. Word has length 92 [2024-11-08 17:46:43,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:43,180 INFO L471 AbstractCegarLoop]: Abstraction has 51156 states and 72816 transitions. [2024-11-08 17:46:43,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 51156 states and 72816 transitions. [2024-11-08 17:46:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 17:46:43,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:43,187 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:43,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 17:46:43,187 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:43,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1937944795, now seen corresponding path program 1 times [2024-11-08 17:46:43,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:43,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187467644] [2024-11-08 17:46:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:43,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:43,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:43,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187467644] [2024-11-08 17:46:43,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187467644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:43,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:43,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:43,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339723848] [2024-11-08 17:46:43,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:43,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:43,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:43,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:43,547 INFO L87 Difference]: Start difference. First operand 51156 states and 72816 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:45,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:45,043 INFO L93 Difference]: Finished difference Result 100760 states and 142770 transitions. [2024-11-08 17:46:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:45,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-08 17:46:45,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:45,093 INFO L225 Difference]: With dead ends: 100760 [2024-11-08 17:46:45,093 INFO L226 Difference]: Without dead ends: 51158 [2024-11-08 17:46:45,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:45,115 INFO L432 NwaCegarLoop]: 1606 mSDtfsCounter, 53 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3157 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:45,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3157 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:45,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51158 states. [2024-11-08 17:46:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51158 to 51156. [2024-11-08 17:46:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51156 states, 51154 states have (on average 1.410016811979513) internal successors, (72128), 51155 states have internal predecessors, (72128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51156 states to 51156 states and 72128 transitions. [2024-11-08 17:46:46,687 INFO L78 Accepts]: Start accepts. Automaton has 51156 states and 72128 transitions. Word has length 93 [2024-11-08 17:46:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:46,687 INFO L471 AbstractCegarLoop]: Abstraction has 51156 states and 72128 transitions. [2024-11-08 17:46:46,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 51156 states and 72128 transitions. [2024-11-08 17:46:46,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 17:46:46,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:46,693 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:46,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 17:46:46,693 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:46,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:46,694 INFO L85 PathProgramCache]: Analyzing trace with hash -868635337, now seen corresponding path program 1 times [2024-11-08 17:46:46,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:46,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837722044] [2024-11-08 17:46:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:46,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:46,827 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:46,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:46,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837722044] [2024-11-08 17:46:46,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837722044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:46,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:46,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:46,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858148922] [2024-11-08 17:46:46,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:46,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:46,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:46,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:46,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:46,830 INFO L87 Difference]: Start difference. First operand 51156 states and 72128 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:47,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:47,670 INFO L93 Difference]: Finished difference Result 69422 states and 97833 transitions. [2024-11-08 17:46:47,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:47,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-08 17:46:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:47,697 INFO L225 Difference]: With dead ends: 69422 [2024-11-08 17:46:47,697 INFO L226 Difference]: Without dead ends: 19820 [2024-11-08 17:46:47,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:47,729 INFO L432 NwaCegarLoop]: 1604 mSDtfsCounter, 47 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:47,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3154 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19820 states. [2024-11-08 17:46:48,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19820 to 19811. [2024-11-08 17:46:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19811 states, 19809 states have (on average 1.4296027058407794) internal successors, (28319), 19810 states have internal predecessors, (28319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19811 states to 19811 states and 28319 transitions. [2024-11-08 17:46:48,438 INFO L78 Accepts]: Start accepts. Automaton has 19811 states and 28319 transitions. Word has length 94 [2024-11-08 17:46:48,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:48,439 INFO L471 AbstractCegarLoop]: Abstraction has 19811 states and 28319 transitions. [2024-11-08 17:46:48,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 19811 states and 28319 transitions. [2024-11-08 17:46:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 17:46:48,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:48,442 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:48,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 17:46:48,442 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:48,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash -752986803, now seen corresponding path program 1 times [2024-11-08 17:46:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:48,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734611446] [2024-11-08 17:46:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:48,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:48,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:48,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734611446] [2024-11-08 17:46:48,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734611446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:48,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:48,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:48,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526482884] [2024-11-08 17:46:48,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:48,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:48,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:48,575 INFO L87 Difference]: Start difference. First operand 19811 states and 28319 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:49,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:49,076 INFO L93 Difference]: Finished difference Result 28935 states and 41041 transitions. [2024-11-08 17:46:49,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:49,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-11-08 17:46:49,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:49,094 INFO L225 Difference]: With dead ends: 28935 [2024-11-08 17:46:49,094 INFO L226 Difference]: Without dead ends: 10693 [2024-11-08 17:46:49,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:49,105 INFO L432 NwaCegarLoop]: 1598 mSDtfsCounter, 49 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:49,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3133 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10693 states. [2024-11-08 17:46:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10693 to 10691. [2024-11-08 17:46:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10691 states, 10689 states have (on average 1.4481242398727665) internal successors, (15479), 10690 states have internal predecessors, (15479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10691 states to 10691 states and 15479 transitions. [2024-11-08 17:46:49,473 INFO L78 Accepts]: Start accepts. Automaton has 10691 states and 15479 transitions. Word has length 95 [2024-11-08 17:46:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:49,474 INFO L471 AbstractCegarLoop]: Abstraction has 10691 states and 15479 transitions. [2024-11-08 17:46:49,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:49,474 INFO L276 IsEmpty]: Start isEmpty. Operand 10691 states and 15479 transitions. [2024-11-08 17:46:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 17:46:49,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:49,476 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:49,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 17:46:49,477 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:49,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash -793321409, now seen corresponding path program 1 times [2024-11-08 17:46:49,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:49,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417586321] [2024-11-08 17:46:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:49,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:49,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:49,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417586321] [2024-11-08 17:46:49,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417586321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:49,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:49,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659383279] [2024-11-08 17:46:49,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:49,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:49,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:49,608 INFO L87 Difference]: Start difference. First operand 10691 states and 15479 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:49,846 INFO L93 Difference]: Finished difference Result 15255 states and 21781 transitions. [2024-11-08 17:46:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:49,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2024-11-08 17:46:49,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:49,855 INFO L225 Difference]: With dead ends: 15255 [2024-11-08 17:46:49,855 INFO L226 Difference]: Without dead ends: 6133 [2024-11-08 17:46:49,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:49,860 INFO L432 NwaCegarLoop]: 1591 mSDtfsCounter, 46 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:49,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3118 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:49,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2024-11-08 17:46:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 6131. [2024-11-08 17:46:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6131 states, 6129 states have (on average 1.4878446728666992) internal successors, (9119), 6130 states have internal predecessors, (9119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6131 states to 6131 states and 9119 transitions. [2024-11-08 17:46:50,006 INFO L78 Accepts]: Start accepts. Automaton has 6131 states and 9119 transitions. Word has length 97 [2024-11-08 17:46:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:50,006 INFO L471 AbstractCegarLoop]: Abstraction has 6131 states and 9119 transitions. [2024-11-08 17:46:50,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 6131 states and 9119 transitions. [2024-11-08 17:46:50,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 17:46:50,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:50,008 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:50,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 17:46:50,008 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:50,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:50,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1316975025, now seen corresponding path program 1 times [2024-11-08 17:46:50,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:50,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546474246] [2024-11-08 17:46:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:50,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:50,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:50,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546474246] [2024-11-08 17:46:50,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546474246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:50,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:50,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:50,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341841631] [2024-11-08 17:46:50,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:50,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:50,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:50,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:50,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:50,138 INFO L87 Difference]: Start difference. First operand 6131 states and 9119 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:50,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:50,244 INFO L93 Difference]: Finished difference Result 8415 states and 12241 transitions. [2024-11-08 17:46:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:50,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-08 17:46:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:50,252 INFO L225 Difference]: With dead ends: 8415 [2024-11-08 17:46:50,252 INFO L226 Difference]: Without dead ends: 3853 [2024-11-08 17:46:50,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:50,256 INFO L432 NwaCegarLoop]: 1584 mSDtfsCounter, 43 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:50,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3103 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:50,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2024-11-08 17:46:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2024-11-08 17:46:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3849 states have (on average 1.5507924136139257) internal successors, (5969), 3850 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5969 transitions. [2024-11-08 17:46:50,375 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5969 transitions. Word has length 99 [2024-11-08 17:46:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:50,375 INFO L471 AbstractCegarLoop]: Abstraction has 3851 states and 5969 transitions. [2024-11-08 17:46:50,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5969 transitions. [2024-11-08 17:46:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-08 17:46:50,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:50,378 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:50,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-08 17:46:50,380 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:50,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1142106531, now seen corresponding path program 1 times [2024-11-08 17:46:50,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:50,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985899326] [2024-11-08 17:46:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:50,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:50,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:50,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985899326] [2024-11-08 17:46:50,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985899326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:50,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:50,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:46:50,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053224023] [2024-11-08 17:46:50,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:50,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:46:50,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:50,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:46:50,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:50,502 INFO L87 Difference]: Start difference. First operand 3851 states and 5969 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:50,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:50,566 INFO L93 Difference]: Finished difference Result 4995 states and 7516 transitions. [2024-11-08 17:46:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:46:50,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-08 17:46:50,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:50,572 INFO L225 Difference]: With dead ends: 4995 [2024-11-08 17:46:50,573 INFO L226 Difference]: Without dead ends: 2713 [2024-11-08 17:46:50,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:46:50,576 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 40 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:50,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3088 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:46:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2024-11-08 17:46:50,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2024-11-08 17:46:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2709 states have (on average 1.6275378368401625) internal successors, (4409), 2710 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 4409 transitions. [2024-11-08 17:46:50,651 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 4409 transitions. Word has length 101 [2024-11-08 17:46:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:50,651 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 4409 transitions. [2024-11-08 17:46:50,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:46:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 4409 transitions. [2024-11-08 17:46:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 17:46:50,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:50,653 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:50,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 17:46:50,653 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:50,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1334499307, now seen corresponding path program 1 times [2024-11-08 17:46:50,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:46:50,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721473248] [2024-11-08 17:46:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:46:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:52,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:46:52,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721473248] [2024-11-08 17:46:52,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721473248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:46:52,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568342115] [2024-11-08 17:46:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:52,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:46:52,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:46:52,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:46:52,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:46:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:52,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 17:46:52,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:46:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:52,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:46:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:46:53,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568342115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:46:53,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:46:53,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-08 17:46:53,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441009783] [2024-11-08 17:46:53,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:46:53,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 17:46:53,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:46:53,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 17:46:53,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:46:53,511 INFO L87 Difference]: Start difference. First operand 2711 states and 4409 transitions. Second operand has 22 states, 22 states have (on average 13.454545454545455) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:47:01,560 INFO L93 Difference]: Finished difference Result 13559 states and 18747 transitions. [2024-11-08 17:47:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-08 17:47:01,561 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.454545454545455) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 17:47:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:47:01,577 INFO L225 Difference]: With dead ends: 13559 [2024-11-08 17:47:01,577 INFO L226 Difference]: Without dead ends: 12319 [2024-11-08 17:47:01,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4222 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1877, Invalid=9679, Unknown=0, NotChecked=0, Total=11556 [2024-11-08 17:47:01,584 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 20400 mSDsluCounter, 8347 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20400 SdHoareTripleChecker+Valid, 9903 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:47:01,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20400 Valid, 9903 Invalid, 2047 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 17:47:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12319 states. [2024-11-08 17:47:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12319 to 11257. [2024-11-08 17:47:02,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11257 states, 11255 states have (on average 1.388183029764549) internal successors, (15624), 11256 states have internal predecessors, (15624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11257 states to 11257 states and 15624 transitions. [2024-11-08 17:47:02,025 INFO L78 Accepts]: Start accepts. Automaton has 11257 states and 15624 transitions. Word has length 103 [2024-11-08 17:47:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:47:02,026 INFO L471 AbstractCegarLoop]: Abstraction has 11257 states and 15624 transitions. [2024-11-08 17:47:02,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.454545454545455) internal successors, (296), 22 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 11257 states and 15624 transitions. [2024-11-08 17:47:02,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 17:47:02,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:47:02,028 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:47:02,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:47:02,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 17:47:02,229 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:47:02,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:47:02,229 INFO L85 PathProgramCache]: Analyzing trace with hash 810887087, now seen corresponding path program 1 times [2024-11-08 17:47:02,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:47:02,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478348694] [2024-11-08 17:47:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:02,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:47:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:03,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:47:03,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478348694] [2024-11-08 17:47:03,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478348694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:47:03,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646970193] [2024-11-08 17:47:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:03,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:03,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:47:03,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:47:03,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:47:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:03,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 17:47:03,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:47:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:04,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:47:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:06,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646970193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:47:06,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:47:06,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 35 [2024-11-08 17:47:06,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363418863] [2024-11-08 17:47:06,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:47:06,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 17:47:06,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:47:06,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 17:47:06,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 17:47:06,645 INFO L87 Difference]: Start difference. First operand 11257 states and 15624 transitions. Second operand has 35 states, 35 states have (on average 8.057142857142857) internal successors, (282), 35 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:47:10,519 INFO L93 Difference]: Finished difference Result 42815 states and 57549 transitions. [2024-11-08 17:47:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-08 17:47:10,519 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.057142857142857) internal successors, (282), 35 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-08 17:47:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:47:10,559 INFO L225 Difference]: With dead ends: 42815 [2024-11-08 17:47:10,559 INFO L226 Difference]: Without dead ends: 33257 [2024-11-08 17:47:10,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1230, Invalid=4932, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 17:47:10,572 INFO L432 NwaCegarLoop]: 1511 mSDtfsCounter, 28464 mSDsluCounter, 8035 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28464 SdHoareTripleChecker+Valid, 9546 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:47:10,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28464 Valid, 9546 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 17:47:10,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33257 states. [2024-11-08 17:47:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33257 to 33057. [2024-11-08 17:47:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33057 states, 33055 states have (on average 1.3279987898956285) internal successors, (43897), 33056 states have internal predecessors, (43897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:11,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33057 states to 33057 states and 43897 transitions. [2024-11-08 17:47:11,753 INFO L78 Accepts]: Start accepts. Automaton has 33057 states and 43897 transitions. Word has length 104 [2024-11-08 17:47:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:47:11,754 INFO L471 AbstractCegarLoop]: Abstraction has 33057 states and 43897 transitions. [2024-11-08 17:47:11,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.057142857142857) internal successors, (282), 35 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:11,754 INFO L276 IsEmpty]: Start isEmpty. Operand 33057 states and 43897 transitions. [2024-11-08 17:47:11,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 17:47:11,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:47:11,756 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:47:11,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:47:11,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 17:47:11,957 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:47:11,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:47:11,957 INFO L85 PathProgramCache]: Analyzing trace with hash 900619183, now seen corresponding path program 1 times [2024-11-08 17:47:11,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:47:11,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950563155] [2024-11-08 17:47:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:11,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:47:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:12,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:47:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950563155] [2024-11-08 17:47:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950563155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:47:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576760706] [2024-11-08 17:47:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:12,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:12,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:47:12,428 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:47:12,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:47:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:12,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 17:47:12,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:47:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:13,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:47:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:14,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576760706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:47:14,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:47:14,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 25 [2024-11-08 17:47:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025613773] [2024-11-08 17:47:14,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:47:14,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:47:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:47:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:47:14,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:47:14,891 INFO L87 Difference]: Start difference. First operand 33057 states and 43897 transitions. Second operand has 26 states, 26 states have (on average 8.884615384615385) internal successors, (231), 25 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:47:17,484 INFO L93 Difference]: Finished difference Result 90881 states and 118767 transitions. [2024-11-08 17:47:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:47:17,484 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.884615384615385) internal successors, (231), 25 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-08 17:47:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:47:17,538 INFO L225 Difference]: With dead ends: 90881 [2024-11-08 17:47:17,538 INFO L226 Difference]: Without dead ends: 59537 [2024-11-08 17:47:17,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=336, Invalid=996, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 17:47:17,550 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 7993 mSDsluCounter, 4816 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7993 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:47:17,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7993 Valid, 6340 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:47:17,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59537 states. [2024-11-08 17:47:19,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59537 to 58993. [2024-11-08 17:47:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58993 states, 58991 states have (on average 1.2935023986709837) internal successors, (76305), 58992 states have internal predecessors, (76305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58993 states to 58993 states and 76305 transitions. [2024-11-08 17:47:19,648 INFO L78 Accepts]: Start accepts. Automaton has 58993 states and 76305 transitions. Word has length 104 [2024-11-08 17:47:19,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:47:19,648 INFO L471 AbstractCegarLoop]: Abstraction has 58993 states and 76305 transitions. [2024-11-08 17:47:19,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.884615384615385) internal successors, (231), 25 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:19,649 INFO L276 IsEmpty]: Start isEmpty. Operand 58993 states and 76305 transitions. [2024-11-08 17:47:19,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-08 17:47:19,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:47:19,651 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:47:19,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:47:19,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 17:47:19,852 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:47:19,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:47:19,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2141557625, now seen corresponding path program 1 times [2024-11-08 17:47:19,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:47:19,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285288510] [2024-11-08 17:47:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:19,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:47:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:20,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:47:20,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285288510] [2024-11-08 17:47:20,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285288510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:47:20,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479792207] [2024-11-08 17:47:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:20,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:20,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:47:20,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:47:20,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:47:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:20,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:47:20,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:47:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:21,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:47:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:22,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479792207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:47:22,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:47:22,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-08 17:47:22,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406085914] [2024-11-08 17:47:22,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:47:22,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:47:22,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:47:22,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:47:22,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:47:22,600 INFO L87 Difference]: Start difference. First operand 58993 states and 76305 transitions. Second operand has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 20 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:47:25,184 INFO L93 Difference]: Finished difference Result 98247 states and 127474 transitions. [2024-11-08 17:47:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:47:25,184 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 20 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-11-08 17:47:25,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:47:25,256 INFO L225 Difference]: With dead ends: 98247 [2024-11-08 17:47:25,256 INFO L226 Difference]: Without dead ends: 60261 [2024-11-08 17:47:25,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2024-11-08 17:47:25,277 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 16703 mSDsluCounter, 4809 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16703 SdHoareTripleChecker+Valid, 6344 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:47:25,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16703 Valid, 6344 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:47:25,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60261 states. [2024-11-08 17:47:27,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60261 to 57067. [2024-11-08 17:47:27,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57067 states, 57065 states have (on average 1.2867431875930957) internal successors, (73428), 57066 states have internal predecessors, (73428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57067 states to 57067 states and 73428 transitions. [2024-11-08 17:47:27,734 INFO L78 Accepts]: Start accepts. Automaton has 57067 states and 73428 transitions. Word has length 105 [2024-11-08 17:47:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:47:27,734 INFO L471 AbstractCegarLoop]: Abstraction has 57067 states and 73428 transitions. [2024-11-08 17:47:27,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.80952380952381) internal successors, (248), 20 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 57067 states and 73428 transitions. [2024-11-08 17:47:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 17:47:27,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:47:27,737 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:47:27,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:47:27,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 17:47:27,938 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:47:27,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:47:27,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1490382229, now seen corresponding path program 1 times [2024-11-08 17:47:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:47:27,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446467294] [2024-11-08 17:47:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:27,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:47:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:29,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:47:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446467294] [2024-11-08 17:47:29,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446467294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:47:29,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340746532] [2024-11-08 17:47:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:29,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:29,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:47:29,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:47:29,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:47:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:29,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:47:29,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:47:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:30,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:47:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:32,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340746532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:47:32,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:47:32,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-08 17:47:32,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924107246] [2024-11-08 17:47:32,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:47:32,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 17:47:32,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:47:32,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 17:47:32,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:47:32,272 INFO L87 Difference]: Start difference. First operand 57067 states and 73428 transitions. Second operand has 28 states, 28 states have (on average 9.25) internal successors, (259), 27 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:39,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:47:39,614 INFO L93 Difference]: Finished difference Result 193373 states and 248726 transitions. [2024-11-08 17:47:39,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 17:47:39,615 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.25) internal successors, (259), 27 states have internal predecessors, (259), 0 states have call successors, (0), 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 106 [2024-11-08 17:47:39,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:47:39,753 INFO L225 Difference]: With dead ends: 193373 [2024-11-08 17:47:39,753 INFO L226 Difference]: Without dead ends: 139205 [2024-11-08 17:47:39,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=703, Invalid=2719, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 17:47:39,915 INFO L432 NwaCegarLoop]: 1564 mSDtfsCounter, 17443 mSDsluCounter, 8292 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17443 SdHoareTripleChecker+Valid, 9856 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:47:39,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17443 Valid, 9856 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:47:39,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139205 states. [2024-11-08 17:47:45,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139205 to 129439. [2024-11-08 17:47:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129439 states, 129437 states have (on average 1.2769687183726446) internal successors, (165287), 129438 states have internal predecessors, (165287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129439 states to 129439 states and 165287 transitions. [2024-11-08 17:47:45,491 INFO L78 Accepts]: Start accepts. Automaton has 129439 states and 165287 transitions. Word has length 106 [2024-11-08 17:47:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:47:45,491 INFO L471 AbstractCegarLoop]: Abstraction has 129439 states and 165287 transitions. [2024-11-08 17:47:45,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.25) internal successors, (259), 27 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:47:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 129439 states and 165287 transitions. [2024-11-08 17:47:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 17:47:45,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:47:45,496 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:47:45,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:47:45,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:45,697 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:47:45,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:47:45,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1452208097, now seen corresponding path program 1 times [2024-11-08 17:47:45,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:47:45,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561255688] [2024-11-08 17:47:45,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:45,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:47:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:46,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:47:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561255688] [2024-11-08 17:47:46,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561255688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:47:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006195032] [2024-11-08 17:47:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:46,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:46,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:47:46,357 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:47:46,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a6e3b8-2900-4de1-85a6-3ee952393e07/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:47:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:46,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 17:47:46,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:47:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:47,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:47:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:47:49,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006195032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:47:49,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:47:49,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-08 17:47:49,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345908679] [2024-11-08 17:47:49,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:47:49,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 17:47:49,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:47:49,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 17:47:49,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2024-11-08 17:47:49,992 INFO L87 Difference]: Start difference. First operand 129439 states and 165287 transitions. Second operand has 32 states, 32 states have (on average 8.9375) internal successors, (286), 32 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)