./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/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_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/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_652b441a-55ef-42bd-8b2b-d66765dad302/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 6bd5a1b43baf28037f1364b515dd3aa33d97d8b4eac9039e625792f2e3fbcc41 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:56:02,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:56:02,244 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:56:02,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:56:02,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:56:02,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:56:02,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:56:02,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:56:02,285 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:56:02,285 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:56:02,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:56:02,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:56:02,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:56:02,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:56:02,288 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:56:02,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:56:02,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:56:02,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:56:02,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:56:02,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:56:02,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:56:02,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:56:02,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:56:02,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:56:02,292 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:56:02,293 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:56:02,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:56:02,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:56:02,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:56:02,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:56:02,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:56:02,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:56:02,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:56:02,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:56:02,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:56:02,301 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:56:02,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:56:02,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:56:02,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:56:02,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:56:02,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:56:02,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:56:02,308 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_652b441a-55ef-42bd-8b2b-d66765dad302/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bd5a1b43baf28037f1364b515dd3aa33d97d8b4eac9039e625792f2e3fbcc41 [2024-11-08 18:56:02,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:56:02,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:56:02,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:56:02,665 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:56:02,670 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:56:02,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c Unable to find full path for "g++" [2024-11-08 18:56:04,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:56:05,422 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:56:05,424 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c [2024-11-08 18:56:05,474 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/data/6db7ca227/a4b7a17efec94351a9f68002c9139c36/FLAGd967b8084 [2024-11-08 18:56:05,912 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/data/6db7ca227/a4b7a17efec94351a9f68002c9139c36 [2024-11-08 18:56:05,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:56:05,917 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:56:05,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:56:05,919 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:56:05,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:56:05,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:56:05" (1/1) ... [2024-11-08 18:56:05,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5185c47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:05, skipping insertion in model container [2024-11-08 18:56:05,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:56:05" (1/1) ... [2024-11-08 18:56:06,118 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:56:06,669 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_652b441a-55ef-42bd-8b2b-d66765dad302/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c[8616,8629] [2024-11-08 18:56:06,814 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_652b441a-55ef-42bd-8b2b-d66765dad302/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c[15677,15690] [2024-11-08 18:56:07,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:56:07,895 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:56:07,958 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_652b441a-55ef-42bd-8b2b-d66765dad302/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c[8616,8629] [2024-11-08 18:56:07,986 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_652b441a-55ef-42bd-8b2b-d66765dad302/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c[15677,15690] [2024-11-08 18:56:08,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:56:08,753 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:56:08,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08 WrapperNode [2024-11-08 18:56:08,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:56:08,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:56:08,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:56:08,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:56:08,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:08,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:09,459 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5037 [2024-11-08 18:56:09,459 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:56:09,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:56:09,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:56:09,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:56:09,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:09,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:09,514 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:09,644 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 18:56:09,644 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:09,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:09,857 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:09,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:09,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:09,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:10,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:56:10,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:56:10,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:56:10,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:56:10,013 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (1/1) ... [2024-11-08 18:56:10,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:56:10,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:10,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:56:10,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:56:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:56:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:56:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:56:10,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:56:10,274 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:56:10,280 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:56:16,230 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-08 18:56:16,230 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:56:16,260 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:56:16,261 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 18:56:16,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:56:16 BoogieIcfgContainer [2024-11-08 18:56:16,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:56:16,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:56:16,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:56:16,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:56:16,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:56:05" (1/3) ... [2024-11-08 18:56:16,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35292222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:56:16, skipping insertion in model container [2024-11-08 18:56:16,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:56:08" (2/3) ... [2024-11-08 18:56:16,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35292222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:56:16, skipping insertion in model container [2024-11-08 18:56:16,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:56:16" (3/3) ... [2024-11-08 18:56:16,278 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label04.c [2024-11-08 18:56:16,297 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:56:16,297 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 18:56:16,387 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:56:16,394 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;@10feb2a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:56:16,394 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:56:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 18:56:16,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:16,414 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] [2024-11-08 18:56:16,415 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:16,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:16,421 INFO L85 PathProgramCache]: Analyzing trace with hash 578166823, now seen corresponding path program 1 times [2024-11-08 18:56:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999850526] [2024-11-08 18:56:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:16,697 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 18:56:16,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:16,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999850526] [2024-11-08 18:56:16,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999850526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:16,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:16,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:56:16,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466154916] [2024-11-08 18:56:16,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:16,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 18:56:16,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:16,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 18:56:16,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 18:56:16,734 INFO L87 Difference]: Start difference. First operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:16,826 INFO L93 Difference]: Finished difference Result 1743 states and 3310 transitions. [2024-11-08 18:56:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 18:56:16,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-08 18:56:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:16,861 INFO L225 Difference]: With dead ends: 1743 [2024-11-08 18:56:16,862 INFO L226 Difference]: Without dead ends: 820 [2024-11-08 18:56:16,872 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 18:56:16,876 INFO L432 NwaCegarLoop]: 1617 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, 1617 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 18:56:16,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:16,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-11-08 18:56:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-11-08 18:56:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8936430317848412) internal successors, (1549), 819 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1549 transitions. [2024-11-08 18:56:16,981 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1549 transitions. Word has length 23 [2024-11-08 18:56:16,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:16,986 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1549 transitions. [2024-11-08 18:56:16,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:16,986 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1549 transitions. [2024-11-08 18:56:16,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 18:56:16,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:16,988 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] [2024-11-08 18:56:16,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:56:16,989 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:16,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1010181079, now seen corresponding path program 1 times [2024-11-08 18:56:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:16,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86052973] [2024-11-08 18:56:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:16,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:17,249 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 18:56:17,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:17,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86052973] [2024-11-08 18:56:17,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86052973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:17,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:17,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:56:17,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430697864] [2024-11-08 18:56:17,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:17,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:56:17,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:17,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:56:17,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:56:17,257 INFO L87 Difference]: Start difference. First operand 820 states and 1549 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:17,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:17,382 INFO L93 Difference]: Finished difference Result 898 states and 1669 transitions. [2024-11-08 18:56:17,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:56:17,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-08 18:56:17,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:17,388 INFO L225 Difference]: With dead ends: 898 [2024-11-08 18:56:17,388 INFO L226 Difference]: Without dead ends: 857 [2024-11-08 18:56:17,389 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 18:56:17,390 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 57 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:17,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6147 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:17,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-08 18:56:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 820. [2024-11-08 18:56:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8655256723716382) internal successors, (1526), 819 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1526 transitions. [2024-11-08 18:56:17,431 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1526 transitions. Word has length 23 [2024-11-08 18:56:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:17,431 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1526 transitions. [2024-11-08 18:56:17,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1526 transitions. [2024-11-08 18:56:17,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 18:56:17,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:17,433 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] [2024-11-08 18:56:17,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:56:17,434 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:17,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:17,434 INFO L85 PathProgramCache]: Analyzing trace with hash -552687090, now seen corresponding path program 1 times [2024-11-08 18:56:17,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:17,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730824363] [2024-11-08 18:56:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:17,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:17,715 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 18:56:17,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:17,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730824363] [2024-11-08 18:56:17,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730824363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:17,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:17,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:17,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015853741] [2024-11-08 18:56:17,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:17,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:17,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:17,722 INFO L87 Difference]: Start difference. First operand 820 states and 1526 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:17,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:17,979 INFO L93 Difference]: Finished difference Result 1116 states and 1990 transitions. [2024-11-08 18:56:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 18:56:17,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-08 18:56:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:17,984 INFO L225 Difference]: With dead ends: 1116 [2024-11-08 18:56:17,985 INFO L226 Difference]: Without dead ends: 1079 [2024-11-08 18:56:17,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 18:56:17,987 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 6269 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:17,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2201 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:17,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-08 18:56:18,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 855. [2024-11-08 18:56:18,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 853 states have (on average 1.8534583821805393) internal successors, (1581), 854 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1581 transitions. [2024-11-08 18:56:18,015 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1581 transitions. Word has length 45 [2024-11-08 18:56:18,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:18,015 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1581 transitions. [2024-11-08 18:56:18,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:18,016 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1581 transitions. [2024-11-08 18:56:18,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 18:56:18,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:18,017 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] [2024-11-08 18:56:18,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:56:18,018 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:18,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:18,018 INFO L85 PathProgramCache]: Analyzing trace with hash 27952062, now seen corresponding path program 1 times [2024-11-08 18:56:18,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:18,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853702668] [2024-11-08 18:56:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:18,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:18,176 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 18:56:18,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853702668] [2024-11-08 18:56:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853702668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:18,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:18,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:18,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748869314] [2024-11-08 18:56:18,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:18,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:18,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:18,181 INFO L87 Difference]: Start difference. First operand 855 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:18,258 INFO L93 Difference]: Finished difference Result 988 states and 1788 transitions. [2024-11-08 18:56:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:18,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-08 18:56:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:18,263 INFO L225 Difference]: With dead ends: 988 [2024-11-08 18:56:18,263 INFO L226 Difference]: Without dead ends: 916 [2024-11-08 18:56:18,267 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 18:56:18,270 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1577 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 18:56:18,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:18,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-08 18:56:18,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-08 18:56:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.832236842105263) internal successors, (1671), 913 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1671 transitions. [2024-11-08 18:56:18,303 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1671 transitions. Word has length 47 [2024-11-08 18:56:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:18,304 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1671 transitions. [2024-11-08 18:56:18,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1671 transitions. [2024-11-08 18:56:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 18:56:18,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:18,309 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] [2024-11-08 18:56:18,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:56:18,310 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:18,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 94445574, now seen corresponding path program 1 times [2024-11-08 18:56:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:18,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068819304] [2024-11-08 18:56:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:18,663 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 18:56:18,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:18,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068819304] [2024-11-08 18:56:18,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068819304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:18,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:18,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:18,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090234485] [2024-11-08 18:56:18,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:18,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:18,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:18,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:18,666 INFO L87 Difference]: Start difference. First operand 914 states and 1671 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:18,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:18,837 INFO L93 Difference]: Finished difference Result 1047 states and 1875 transitions. [2024-11-08 18:56:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:56:18,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-08 18:56:18,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:18,842 INFO L225 Difference]: With dead ends: 1047 [2024-11-08 18:56:18,842 INFO L226 Difference]: Without dead ends: 916 [2024-11-08 18:56:18,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:56:18,843 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 5924 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:18,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1682 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:18,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-08 18:56:18,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-08 18:56:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.8300438596491229) internal successors, (1669), 913 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1669 transitions. [2024-11-08 18:56:18,870 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1669 transitions. Word has length 47 [2024-11-08 18:56:18,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:18,870 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1669 transitions. [2024-11-08 18:56:18,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:18,871 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1669 transitions. [2024-11-08 18:56:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 18:56:18,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:18,873 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] [2024-11-08 18:56:18,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:56:18,874 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:18,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:18,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1781877655, now seen corresponding path program 1 times [2024-11-08 18:56:18,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:18,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913648896] [2024-11-08 18:56:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:18,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:19,176 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 18:56:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:19,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913648896] [2024-11-08 18:56:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913648896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:19,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 18:56:19,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500280366] [2024-11-08 18:56:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:19,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:56:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:56:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:56:19,180 INFO L87 Difference]: Start difference. First operand 914 states and 1669 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:19,239 INFO L93 Difference]: Finished difference Result 922 states and 1678 transitions. [2024-11-08 18:56:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:56:19,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-08 18:56:19,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:19,247 INFO L225 Difference]: With dead ends: 922 [2024-11-08 18:56:19,247 INFO L226 Difference]: Without dead ends: 920 [2024-11-08 18:56:19,248 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 18:56:19,249 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6083 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 18:56:19,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-08 18:56:19,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2024-11-08 18:56:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.8235294117647058) internal successors, (1674), 919 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1674 transitions. [2024-11-08 18:56:19,285 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1674 transitions. Word has length 48 [2024-11-08 18:56:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:19,287 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1674 transitions. [2024-11-08 18:56:19,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1674 transitions. [2024-11-08 18:56:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 18:56:19,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:19,289 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] [2024-11-08 18:56:19,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:56:19,290 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:19,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1233670470, now seen corresponding path program 1 times [2024-11-08 18:56:19,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:19,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708115861] [2024-11-08 18:56:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:19,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:19,379 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 18:56:19,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:19,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708115861] [2024-11-08 18:56:19,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708115861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:19,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:19,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:19,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752128912] [2024-11-08 18:56:19,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:19,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:19,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:19,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:19,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:19,381 INFO L87 Difference]: Start difference. First operand 920 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:19,418 INFO L93 Difference]: Finished difference Result 1071 states and 1900 transitions. [2024-11-08 18:56:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:19,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 18:56:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:19,422 INFO L225 Difference]: With dead ends: 1071 [2024-11-08 18:56:19,423 INFO L226 Difference]: Without dead ends: 993 [2024-11-08 18:56:19,423 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 18:56:19,424 INFO L432 NwaCegarLoop]: 1568 mSDtfsCounter, 1486 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1627 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 18:56:19,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2024-11-08 18:56:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2024-11-08 18:56:19,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 989 states have (on average 1.7977755308392316) internal successors, (1778), 990 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1778 transitions. [2024-11-08 18:56:19,453 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1778 transitions. Word has length 49 [2024-11-08 18:56:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:19,453 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1778 transitions. [2024-11-08 18:56:19,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1778 transitions. [2024-11-08 18:56:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 18:56:19,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:19,454 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] [2024-11-08 18:56:19,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:56:19,454 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:19,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:19,455 INFO L85 PathProgramCache]: Analyzing trace with hash 256463686, now seen corresponding path program 1 times [2024-11-08 18:56:19,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:19,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495499544] [2024-11-08 18:56:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:19,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:19,515 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 18:56:19,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495499544] [2024-11-08 18:56:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495499544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:19,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:19,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:19,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329654432] [2024-11-08 18:56:19,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:19,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:19,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:19,518 INFO L87 Difference]: Start difference. First operand 991 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:19,558 INFO L93 Difference]: Finished difference Result 1377 states and 2350 transitions. [2024-11-08 18:56:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:19,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 18:56:19,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:19,563 INFO L225 Difference]: With dead ends: 1377 [2024-11-08 18:56:19,563 INFO L226 Difference]: Without dead ends: 1172 [2024-11-08 18:56:19,564 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 18:56:19,565 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 1482 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1627 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 18:56:19,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2024-11-08 18:56:19,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1170. [2024-11-08 18:56:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1168 states have (on average 1.7431506849315068) internal successors, (2036), 1169 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2036 transitions. [2024-11-08 18:56:19,597 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2036 transitions. Word has length 49 [2024-11-08 18:56:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:19,598 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 2036 transitions. [2024-11-08 18:56:19,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2036 transitions. [2024-11-08 18:56:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 18:56:19,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:19,599 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] [2024-11-08 18:56:19,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:56:19,599 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:19,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:19,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2037396550, now seen corresponding path program 1 times [2024-11-08 18:56:19,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:19,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119868558] [2024-11-08 18:56:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:19,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:19,657 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 18:56:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:19,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119868558] [2024-11-08 18:56:19,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119868558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:19,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:19,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:19,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260503564] [2024-11-08 18:56:19,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:19,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:19,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:19,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:19,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:19,660 INFO L87 Difference]: Start difference. First operand 1170 states and 2036 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:19,706 INFO L93 Difference]: Finished difference Result 1890 states and 3082 transitions. [2024-11-08 18:56:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:19,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 18:56:19,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:19,712 INFO L225 Difference]: With dead ends: 1890 [2024-11-08 18:56:19,713 INFO L226 Difference]: Without dead ends: 1506 [2024-11-08 18:56:19,714 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 18:56:19,714 INFO L432 NwaCegarLoop]: 1558 mSDtfsCounter, 1480 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1629 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 18:56:19,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1629 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:19,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-08 18:56:19,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1504. [2024-11-08 18:56:19,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1502 states have (on average 1.66711051930759) internal successors, (2504), 1503 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2504 transitions. [2024-11-08 18:56:19,761 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2504 transitions. Word has length 49 [2024-11-08 18:56:19,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:19,761 INFO L471 AbstractCegarLoop]: Abstraction has 1504 states and 2504 transitions. [2024-11-08 18:56:19,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2504 transitions. [2024-11-08 18:56:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 18:56:19,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:19,762 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] [2024-11-08 18:56:19,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:56:19,763 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:19,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1823034810, now seen corresponding path program 1 times [2024-11-08 18:56:19,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:19,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730795261] [2024-11-08 18:56:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:19,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:19,823 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 18:56:19,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:19,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730795261] [2024-11-08 18:56:19,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730795261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:19,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:19,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9725697] [2024-11-08 18:56:19,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:19,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:19,825 INFO L87 Difference]: Start difference. First operand 1504 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:19,886 INFO L93 Difference]: Finished difference Result 2844 states and 4402 transitions. [2024-11-08 18:56:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:19,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 18:56:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:19,894 INFO L225 Difference]: With dead ends: 2844 [2024-11-08 18:56:19,894 INFO L226 Difference]: Without dead ends: 2126 [2024-11-08 18:56:19,896 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 18:56:19,896 INFO L432 NwaCegarLoop]: 1570 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1633 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 18:56:19,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2024-11-08 18:56:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2124. [2024-11-08 18:56:19,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2122 states have (on average 1.5758718190386427) internal successors, (3344), 2123 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3344 transitions. [2024-11-08 18:56:19,966 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3344 transitions. Word has length 49 [2024-11-08 18:56:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:19,966 INFO L471 AbstractCegarLoop]: Abstraction has 2124 states and 3344 transitions. [2024-11-08 18:56:19,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3344 transitions. [2024-11-08 18:56:19,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 18:56:19,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:19,968 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 18:56:19,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:56:19,968 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:19,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:19,969 INFO L85 PathProgramCache]: Analyzing trace with hash -169708936, now seen corresponding path program 1 times [2024-11-08 18:56:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:19,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992329102] [2024-11-08 18:56:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:20,218 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 18:56:20,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:20,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992329102] [2024-11-08 18:56:20,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992329102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:20,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:20,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:20,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32465555] [2024-11-08 18:56:20,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:20,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:56:20,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:56:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:56:20,222 INFO L87 Difference]: Start difference. First operand 2124 states and 3344 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 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 18:56:28,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:28,196 INFO L93 Difference]: Finished difference Result 4379 states and 7653 transitions. [2024-11-08 18:56:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:56:28,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 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 18:56:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:28,210 INFO L225 Difference]: With dead ends: 4379 [2024-11-08 18:56:28,211 INFO L226 Difference]: Without dead ends: 3626 [2024-11-08 18:56:28,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:56:28,213 INFO L432 NwaCegarLoop]: 780 mSDtfsCounter, 2371 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:28,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2371 Valid, 798 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-08 18:56:28,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2024-11-08 18:56:28,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3626. [2024-11-08 18:56:28,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3624 states have (on average 1.467991169977925) internal successors, (5320), 3625 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 5320 transitions. [2024-11-08 18:56:28,321 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 5320 transitions. Word has length 61 [2024-11-08 18:56:28,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:28,321 INFO L471 AbstractCegarLoop]: Abstraction has 3626 states and 5320 transitions. [2024-11-08 18:56:28,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 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 18:56:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 5320 transitions. [2024-11-08 18:56:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 18:56:28,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:28,324 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] [2024-11-08 18:56:28,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 18:56:28,324 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:28,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:28,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2040509128, now seen corresponding path program 1 times [2024-11-08 18:56:28,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:28,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76773211] [2024-11-08 18:56:28,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:28,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 18:56:28,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:28,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76773211] [2024-11-08 18:56:28,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76773211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:28,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:28,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:28,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632093522] [2024-11-08 18:56:28,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:28,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:28,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:28,506 INFO L87 Difference]: Start difference. First operand 3626 states and 5320 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:28,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:28,757 INFO L93 Difference]: Finished difference Result 8900 states and 12693 transitions. [2024-11-08 18:56:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:56:28,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 67 [2024-11-08 18:56:28,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:28,781 INFO L225 Difference]: With dead ends: 8900 [2024-11-08 18:56:28,782 INFO L226 Difference]: Without dead ends: 7938 [2024-11-08 18:56:28,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:56:28,787 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 4652 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:28,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3312 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:28,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2024-11-08 18:56:29,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 4778. [2024-11-08 18:56:29,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4776 states have (on average 1.4472361809045227) internal successors, (6912), 4777 states have internal predecessors, (6912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6912 transitions. [2024-11-08 18:56:29,054 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6912 transitions. Word has length 67 [2024-11-08 18:56:29,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:29,055 INFO L471 AbstractCegarLoop]: Abstraction has 4778 states and 6912 transitions. [2024-11-08 18:56:29,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:29,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6912 transitions. [2024-11-08 18:56:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 18:56:29,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:29,057 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] [2024-11-08 18:56:29,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 18:56:29,057 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:29,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:29,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1063302344, now seen corresponding path program 1 times [2024-11-08 18:56:29,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:29,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021413291] [2024-11-08 18:56:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:29,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 18:56:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021413291] [2024-11-08 18:56:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021413291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:29,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:29,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:29,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604226325] [2024-11-08 18:56:29,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:29,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:29,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:29,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:29,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:29,333 INFO L87 Difference]: Start difference. First operand 4778 states and 6912 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 18:56:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:29,612 INFO L93 Difference]: Finished difference Result 10236 states and 14549 transitions. [2024-11-08 18:56:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:56:29,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 67 [2024-11-08 18:56:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:29,638 INFO L225 Difference]: With dead ends: 10236 [2024-11-08 18:56:29,639 INFO L226 Difference]: Without dead ends: 8898 [2024-11-08 18:56:29,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:56:29,644 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 4687 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:29,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4687 Valid, 3342 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2024-11-08 18:56:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 6594. [2024-11-08 18:56:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6594 states, 6592 states have (on average 1.4283980582524272) internal successors, (9416), 6593 states have internal predecessors, (9416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6594 states to 6594 states and 9416 transitions. [2024-11-08 18:56:29,878 INFO L78 Accepts]: Start accepts. Automaton has 6594 states and 9416 transitions. Word has length 67 [2024-11-08 18:56:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:29,879 INFO L471 AbstractCegarLoop]: Abstraction has 6594 states and 9416 transitions. [2024-11-08 18:56:29,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 18:56:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 6594 states and 9416 transitions. [2024-11-08 18:56:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 18:56:29,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:29,881 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] [2024-11-08 18:56:29,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:56:29,881 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:29,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:29,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1450732088, now seen corresponding path program 1 times [2024-11-08 18:56:29,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:29,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077411491] [2024-11-08 18:56:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:56:30,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:30,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077411491] [2024-11-08 18:56:30,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077411491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:30,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:30,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:30,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840463125] [2024-11-08 18:56:30,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:30,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:30,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:30,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:30,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:30,042 INFO L87 Difference]: Start difference. First operand 6594 states and 9416 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:30,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:30,356 INFO L93 Difference]: Finished difference Result 11572 states and 16397 transitions. [2024-11-08 18:56:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:56:30,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-08 18:56:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:30,384 INFO L225 Difference]: With dead ends: 11572 [2024-11-08 18:56:30,384 INFO L226 Difference]: Without dead ends: 10234 [2024-11-08 18:56:30,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:56:30,390 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 4684 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4684 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:30,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4684 Valid, 3336 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10234 states. [2024-11-08 18:56:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10234 to 7930. [2024-11-08 18:56:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 7928 states have (on average 1.4207870837537842) internal successors, (11264), 7929 states have internal predecessors, (11264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 11264 transitions. [2024-11-08 18:56:30,745 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 11264 transitions. Word has length 67 [2024-11-08 18:56:30,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:30,745 INFO L471 AbstractCegarLoop]: Abstraction has 7930 states and 11264 transitions. [2024-11-08 18:56:30,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 11264 transitions. [2024-11-08 18:56:30,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 18:56:30,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:30,748 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] [2024-11-08 18:56:30,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 18:56:30,748 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:30,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:30,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1016196152, now seen corresponding path program 1 times [2024-11-08 18:56:30,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:30,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652682736] [2024-11-08 18:56:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:30,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 18:56:30,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:30,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652682736] [2024-11-08 18:56:30,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652682736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:30,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:30,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 18:56:30,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127402051] [2024-11-08 18:56:30,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:30,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:56:30,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:56:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:56:30,928 INFO L87 Difference]: Start difference. First operand 7930 states and 11264 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:31,277 INFO L93 Difference]: Finished difference Result 12908 states and 18245 transitions. [2024-11-08 18:56:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:56:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-08 18:56:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:31,300 INFO L225 Difference]: With dead ends: 12908 [2024-11-08 18:56:31,301 INFO L226 Difference]: Without dead ends: 11570 [2024-11-08 18:56:31,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:56:31,308 INFO L432 NwaCegarLoop]: 1575 mSDtfsCounter, 4654 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:31,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4654 Valid, 3373 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:56:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11570 states. [2024-11-08 18:56:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11570 to 9266. [2024-11-08 18:56:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9266 states, 9264 states have (on average 1.415371329879102) internal successors, (13112), 9265 states have internal predecessors, (13112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9266 states to 9266 states and 13112 transitions. [2024-11-08 18:56:31,622 INFO L78 Accepts]: Start accepts. Automaton has 9266 states and 13112 transitions. Word has length 67 [2024-11-08 18:56:31,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:31,622 INFO L471 AbstractCegarLoop]: Abstraction has 9266 states and 13112 transitions. [2024-11-08 18:56:31,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9266 states and 13112 transitions. [2024-11-08 18:56:31,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 18:56:31,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:31,624 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] [2024-11-08 18:56:31,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 18:56:31,624 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:31,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash 631665112, now seen corresponding path program 1 times [2024-11-08 18:56:31,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:31,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423372493] [2024-11-08 18:56:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:31,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:31,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:31,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423372493] [2024-11-08 18:56:31,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423372493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:31,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:31,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:31,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302078069] [2024-11-08 18:56:31,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:31,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:31,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:31,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:31,760 INFO L87 Difference]: Start difference. First operand 9266 states and 13112 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 18:56:31,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:31,970 INFO L93 Difference]: Finished difference Result 16246 states and 22778 transitions. [2024-11-08 18:56:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:31,970 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 18:56:31,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:31,989 INFO L225 Difference]: With dead ends: 16246 [2024-11-08 18:56:31,989 INFO L226 Difference]: Without dead ends: 9268 [2024-11-08 18:56:31,998 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 18:56:31,999 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3067 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 18:56:31,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3067 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:32,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9268 states. [2024-11-08 18:56:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9268 to 9266. [2024-11-08 18:56:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9266 states, 9264 states have (on average 1.401986183074266) internal successors, (12988), 9265 states have internal predecessors, (12988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9266 states to 9266 states and 12988 transitions. [2024-11-08 18:56:32,379 INFO L78 Accepts]: Start accepts. Automaton has 9266 states and 12988 transitions. Word has length 68 [2024-11-08 18:56:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:32,380 INFO L471 AbstractCegarLoop]: Abstraction has 9266 states and 12988 transitions. [2024-11-08 18:56:32,380 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 18:56:32,380 INFO L276 IsEmpty]: Start isEmpty. Operand 9266 states and 12988 transitions. [2024-11-08 18:56:32,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 18:56:32,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:32,382 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] [2024-11-08 18:56:32,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 18:56:32,382 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:32,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:32,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1338835776, now seen corresponding path program 1 times [2024-11-08 18:56:32,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:32,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813622331] [2024-11-08 18:56:32,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:32,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:32,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:32,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813622331] [2024-11-08 18:56:32,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813622331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:32,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:32,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:32,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918129395] [2024-11-08 18:56:32,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:32,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:32,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:32,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:32,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:32,516 INFO L87 Difference]: Start difference. First operand 9266 states and 12988 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 18:56:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:32,622 INFO L93 Difference]: Finished difference Result 11928 states and 16661 transitions. [2024-11-08 18:56:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:32,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 18:56:32,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:32,633 INFO L225 Difference]: With dead ends: 11928 [2024-11-08 18:56:32,633 INFO L226 Difference]: Without dead ends: 4950 [2024-11-08 18:56:32,641 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 18:56:32,642 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3064 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 18:56:32,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4950 states. [2024-11-08 18:56:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4950 to 4941. [2024-11-08 18:56:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4941 states, 4939 states have (on average 1.4308564486738207) internal successors, (7067), 4940 states have internal predecessors, (7067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4941 states to 4941 states and 7067 transitions. [2024-11-08 18:56:32,773 INFO L78 Accepts]: Start accepts. Automaton has 4941 states and 7067 transitions. Word has length 69 [2024-11-08 18:56:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:32,773 INFO L471 AbstractCegarLoop]: Abstraction has 4941 states and 7067 transitions. [2024-11-08 18:56:32,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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 18:56:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4941 states and 7067 transitions. [2024-11-08 18:56:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 18:56:32,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:32,775 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] [2024-11-08 18:56:32,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:56:32,776 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:32,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:32,777 INFO L85 PathProgramCache]: Analyzing trace with hash 634449354, now seen corresponding path program 1 times [2024-11-08 18:56:32,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:32,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942203497] [2024-11-08 18:56:32,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:32,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:32,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:32,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942203497] [2024-11-08 18:56:32,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942203497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:32,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:32,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:32,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706638768] [2024-11-08 18:56:32,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:32,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:32,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:32,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:32,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:32,909 INFO L87 Difference]: Start difference. First operand 4941 states and 7067 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 18:56:32,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:32,972 INFO L93 Difference]: Finished difference Result 6265 states and 8873 transitions. [2024-11-08 18:56:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:32,972 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 18:56:32,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:32,980 INFO L225 Difference]: With dead ends: 6265 [2024-11-08 18:56:32,980 INFO L226 Difference]: Without dead ends: 3623 [2024-11-08 18:56:32,983 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 18:56:32,984 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 33 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3043 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 18:56:32,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:32,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2024-11-08 18:56:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3621. [2024-11-08 18:56:33,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3619 states have (on average 1.4481901077645758) internal successors, (5241), 3620 states have internal predecessors, (5241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5241 transitions. [2024-11-08 18:56:33,063 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5241 transitions. Word has length 70 [2024-11-08 18:56:33,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:33,064 INFO L471 AbstractCegarLoop]: Abstraction has 3621 states and 5241 transitions. [2024-11-08 18:56:33,064 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 18:56:33,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5241 transitions. [2024-11-08 18:56:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-08 18:56:33,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:33,065 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] [2024-11-08 18:56:33,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 18:56:33,065 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:33,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:33,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1930039236, now seen corresponding path program 1 times [2024-11-08 18:56:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:33,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745235140] [2024-11-08 18:56:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:33,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:33,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:33,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745235140] [2024-11-08 18:56:33,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745235140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:56:33,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:56:33,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:56:33,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450597516] [2024-11-08 18:56:33,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:56:33,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:56:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:33,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:56:33,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:56:33,197 INFO L87 Difference]: Start difference. First operand 3621 states and 5241 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:33,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:33,242 INFO L93 Difference]: Finished difference Result 4285 states and 6134 transitions. [2024-11-08 18:56:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:56:33,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-08 18:56:33,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:33,249 INFO L225 Difference]: With dead ends: 4285 [2024-11-08 18:56:33,249 INFO L226 Difference]: Without dead ends: 2963 [2024-11-08 18:56:33,251 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 18:56:33,252 INFO L432 NwaCegarLoop]: 1538 mSDtfsCounter, 30 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3028 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 18:56:33,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 18:56:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2024-11-08 18:56:33,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2961. [2024-11-08 18:56:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2961 states, 2959 states have (on average 1.4663737749239607) internal successors, (4339), 2960 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4339 transitions. [2024-11-08 18:56:33,314 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4339 transitions. Word has length 72 [2024-11-08 18:56:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:33,314 INFO L471 AbstractCegarLoop]: Abstraction has 2961 states and 4339 transitions. [2024-11-08 18:56:33,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4339 transitions. [2024-11-08 18:56:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 18:56:33,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:33,317 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:33,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 18:56:33,317 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:33,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:33,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1270913326, now seen corresponding path program 1 times [2024-11-08 18:56:33,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:33,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910321595] [2024-11-08 18:56:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:33,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:35,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:35,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910321595] [2024-11-08 18:56:35,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910321595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:35,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150684181] [2024-11-08 18:56:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:35,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:35,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:35,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:35,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:56:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:35,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 18:56:35,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:36,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:36,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150684181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:36,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:36,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-08 18:56:36,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353379038] [2024-11-08 18:56:36,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:36,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 18:56:36,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:36,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 18:56:36,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-11-08 18:56:36,796 INFO L87 Difference]: Start difference. First operand 2961 states and 4339 transitions. Second operand has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:44,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:44,039 INFO L93 Difference]: Finished difference Result 8209 states and 11174 transitions. [2024-11-08 18:56:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-08 18:56:44,040 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 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 74 [2024-11-08 18:56:44,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:44,054 INFO L225 Difference]: With dead ends: 8209 [2024-11-08 18:56:44,054 INFO L226 Difference]: Without dead ends: 7481 [2024-11-08 18:56:44,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3651 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1650, Invalid=8450, Unknown=0, NotChecked=0, Total=10100 [2024-11-08 18:56:44,060 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 16423 mSDsluCounter, 6628 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16423 SdHoareTripleChecker+Valid, 8144 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:44,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16423 Valid, 8144 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 18:56:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7481 states. [2024-11-08 18:56:44,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7481 to 6894. [2024-11-08 18:56:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6894 states, 6892 states have (on average 1.3585316308763784) internal successors, (9363), 6893 states have internal predecessors, (9363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6894 states to 6894 states and 9363 transitions. [2024-11-08 18:56:44,281 INFO L78 Accepts]: Start accepts. Automaton has 6894 states and 9363 transitions. Word has length 74 [2024-11-08 18:56:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:44,281 INFO L471 AbstractCegarLoop]: Abstraction has 6894 states and 9363 transitions. [2024-11-08 18:56:44,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 6894 states and 9363 transitions. [2024-11-08 18:56:44,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 18:56:44,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:44,284 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:44,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:56:44,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:44,485 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:44,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1182538012, now seen corresponding path program 1 times [2024-11-08 18:56:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960136149] [2024-11-08 18:56:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:44,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:47,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:47,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960136149] [2024-11-08 18:56:47,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960136149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:47,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802789119] [2024-11-08 18:56:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:47,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:47,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:47,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:47,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:56:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:47,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 18:56:47,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:47,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:49,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802789119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:49,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:49,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-08 18:56:49,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261323127] [2024-11-08 18:56:49,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:49,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 18:56:49,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:49,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 18:56:49,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2024-11-08 18:56:49,283 INFO L87 Difference]: Start difference. First operand 6894 states and 9363 transitions. Second operand has 28 states, 28 states have (on average 6.892857142857143) internal successors, (193), 27 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:51,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:51,191 INFO L93 Difference]: Finished difference Result 23895 states and 31277 transitions. [2024-11-08 18:56:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 18:56:51,192 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.892857142857143) internal successors, (193), 27 states have internal predecessors, (193), 0 states have call successors, (0), 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 75 [2024-11-08 18:56:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:51,229 INFO L225 Difference]: With dead ends: 23895 [2024-11-08 18:56:51,230 INFO L226 Difference]: Without dead ends: 19512 [2024-11-08 18:56:51,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=582, Invalid=2388, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 18:56:51,239 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 21784 mSDsluCounter, 6498 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21784 SdHoareTripleChecker+Valid, 7999 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:51,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21784 Valid, 7999 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 18:56:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19512 states. [2024-11-08 18:56:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19512 to 19376. [2024-11-08 18:56:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19376 states, 19374 states have (on average 1.304273768968721) internal successors, (25269), 19375 states have internal predecessors, (25269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19376 states to 19376 states and 25269 transitions. [2024-11-08 18:56:51,847 INFO L78 Accepts]: Start accepts. Automaton has 19376 states and 25269 transitions. Word has length 75 [2024-11-08 18:56:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:51,847 INFO L471 AbstractCegarLoop]: Abstraction has 19376 states and 25269 transitions. [2024-11-08 18:56:51,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.892857142857143) internal successors, (193), 27 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 19376 states and 25269 transitions. [2024-11-08 18:56:51,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 18:56:51,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:51,850 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:51,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:56:52,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:52,051 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:52,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:52,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1063832804, now seen corresponding path program 1 times [2024-11-08 18:56:52,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:52,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262959267] [2024-11-08 18:56:52,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:52,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:52,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262959267] [2024-11-08 18:56:52,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262959267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146503133] [2024-11-08 18:56:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:52,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:52,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:52,603 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:52,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:56:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:52,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 18:56:52,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:56:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:53,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:56:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:55,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146503133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:56:55,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:56:55,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-11-08 18:56:55,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488814506] [2024-11-08 18:56:55,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:56:55,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 18:56:55,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:56:55,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 18:56:55,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2024-11-08 18:56:55,277 INFO L87 Difference]: Start difference. First operand 19376 states and 25269 transitions. Second operand has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 28 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:57,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:56:57,974 INFO L93 Difference]: Finished difference Result 33024 states and 42621 transitions. [2024-11-08 18:56:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 18:56:57,977 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 28 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-08 18:56:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:56:58,005 INFO L225 Difference]: With dead ends: 33024 [2024-11-08 18:56:58,005 INFO L226 Difference]: Without dead ends: 17359 [2024-11-08 18:56:58,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=702, Invalid=2604, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 18:56:58,023 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 13962 mSDsluCounter, 9142 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13962 SdHoareTripleChecker+Valid, 10633 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:56:58,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13962 Valid, 10633 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:56:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17359 states. [2024-11-08 18:56:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17359 to 16517. [2024-11-08 18:56:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16517 states, 16515 states have (on average 1.28755676657584) internal successors, (21264), 16516 states have internal predecessors, (21264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:58,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16517 states to 16517 states and 21264 transitions. [2024-11-08 18:56:58,901 INFO L78 Accepts]: Start accepts. Automaton has 16517 states and 21264 transitions. Word has length 75 [2024-11-08 18:56:58,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:56:58,901 INFO L471 AbstractCegarLoop]: Abstraction has 16517 states and 21264 transitions. [2024-11-08 18:56:58,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.964285714285714) internal successors, (195), 28 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:56:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 16517 states and 21264 transitions. [2024-11-08 18:56:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 18:56:58,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:56:58,904 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:56:58,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:56:59,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:59,108 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:56:59,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:56:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash -431742720, now seen corresponding path program 1 times [2024-11-08 18:56:59,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:56:59,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520766193] [2024-11-08 18:56:59,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:59,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:56:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:56:59,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:56:59,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520766193] [2024-11-08 18:56:59,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520766193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:56:59,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676551634] [2024-11-08 18:56:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:56:59,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:56:59,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:56:59,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:56:59,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:56:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:56:59,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 18:56:59,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:57:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:00,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:57:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:01,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676551634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:57:01,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:57:01,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 30 [2024-11-08 18:57:01,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904670862] [2024-11-08 18:57:01,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:57:01,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 18:57:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:57:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 18:57:01,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-11-08 18:57:01,577 INFO L87 Difference]: Start difference. First operand 16517 states and 21264 transitions. Second operand has 30 states, 30 states have (on average 6.6) internal successors, (198), 30 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:57:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:57:02,762 INFO L93 Difference]: Finished difference Result 29798 states and 38011 transitions. [2024-11-08 18:57:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 18:57:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.6) internal successors, (198), 30 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-08 18:57:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:57:02,786 INFO L225 Difference]: With dead ends: 29798 [2024-11-08 18:57:02,787 INFO L226 Difference]: Without dead ends: 17085 [2024-11-08 18:57:02,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=472, Invalid=1508, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 18:57:02,801 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 16831 mSDsluCounter, 7740 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16831 SdHoareTripleChecker+Valid, 9240 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:57:02,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16831 Valid, 9240 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:57:02,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17085 states. [2024-11-08 18:57:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17085 to 16137. [2024-11-08 18:57:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16137 states, 16135 states have (on average 1.2767895878524946) internal successors, (20601), 16136 states have internal predecessors, (20601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:57:03,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16137 states to 16137 states and 20601 transitions. [2024-11-08 18:57:03,505 INFO L78 Accepts]: Start accepts. Automaton has 16137 states and 20601 transitions. Word has length 76 [2024-11-08 18:57:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:57:03,505 INFO L471 AbstractCegarLoop]: Abstraction has 16137 states and 20601 transitions. [2024-11-08 18:57:03,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.6) internal successors, (198), 30 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:57:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 16137 states and 20601 transitions. [2024-11-08 18:57:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 18:57:03,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:57:03,507 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:57:03,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 18:57:03,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:03,708 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:57:03,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:57:03,709 INFO L85 PathProgramCache]: Analyzing trace with hash 490402816, now seen corresponding path program 1 times [2024-11-08 18:57:03,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:57:03,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567004167] [2024-11-08 18:57:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:03,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:57:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:04,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:57:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567004167] [2024-11-08 18:57:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567004167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:57:04,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702030666] [2024-11-08 18:57:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:04,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:04,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:57:04,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:57:04,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:57:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:04,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:57:04,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:57:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:04,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:57:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:05,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702030666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:57:05,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:57:05,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-08 18:57:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222696778] [2024-11-08 18:57:05,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:57:05,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:57:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:57:05,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:57:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:57:05,541 INFO L87 Difference]: Start difference. First operand 16137 states and 20601 transitions. Second operand has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:57:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:57:06,834 INFO L93 Difference]: Finished difference Result 43700 states and 55062 transitions. [2024-11-08 18:57:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:57:06,835 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-08 18:57:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:57:06,870 INFO L225 Difference]: With dead ends: 43700 [2024-11-08 18:57:06,870 INFO L226 Difference]: Without dead ends: 31167 [2024-11-08 18:57:06,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 18:57:06,886 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 16554 mSDsluCounter, 4741 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16554 SdHoareTripleChecker+Valid, 6261 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:57:06,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16554 Valid, 6261 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:57:06,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31167 states. [2024-11-08 18:57:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31167 to 30763. [2024-11-08 18:57:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30763 states, 30761 states have (on average 1.2460583206007607) internal successors, (38330), 30762 states have internal predecessors, (38330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:57:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30763 states to 30763 states and 38330 transitions. [2024-11-08 18:57:08,247 INFO L78 Accepts]: Start accepts. Automaton has 30763 states and 38330 transitions. Word has length 76 [2024-11-08 18:57:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:57:08,248 INFO L471 AbstractCegarLoop]: Abstraction has 30763 states and 38330 transitions. [2024-11-08 18:57:08,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 22 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:57:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 30763 states and 38330 transitions. [2024-11-08 18:57:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 18:57:08,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:57:08,251 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:57:08,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:57:08,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:08,452 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:57:08,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:57:08,452 INFO L85 PathProgramCache]: Analyzing trace with hash 338355724, now seen corresponding path program 1 times [2024-11-08 18:57:08,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:57:08,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648526396] [2024-11-08 18:57:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:08,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:57:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:11,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:57:11,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648526396] [2024-11-08 18:57:11,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648526396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:57:11,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344415992] [2024-11-08 18:57:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:57:11,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:57:11,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:57:11,117 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:57:11,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:57:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:57:11,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 18:57:11,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:57:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:17,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:57:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:57:25,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344415992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:57:25,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:57:25,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 28, 25] total 74 [2024-11-08 18:57:25,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681658572] [2024-11-08 18:57:25,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:57:25,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-08 18:57:25,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:57:25,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-08 18:57:25,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=4726, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 18:57:25,404 INFO L87 Difference]: Start difference. First operand 30763 states and 38330 transitions. Second operand has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 74 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:59:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:59:20,343 INFO L93 Difference]: Finished difference Result 85093 states and 105499 transitions. [2024-11-08 18:59:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 269 states. [2024-11-08 18:59:20,343 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 74 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-08 18:59:20,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:59:20,401 INFO L225 Difference]: With dead ends: 85093 [2024-11-08 18:59:20,401 INFO L226 Difference]: Without dead ends: 69220 [2024-11-08 18:59:20,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40503 ImplicationChecksByTransitivity, 105.2s TimeCoverageRelationStatistics Valid=14817, Invalid=91785, Unknown=0, NotChecked=0, Total=106602 [2024-11-08 18:59:20,425 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 27326 mSDsluCounter, 27930 mSDsCounter, 0 mSdLazyCounter, 9129 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27326 SdHoareTripleChecker+Valid, 29475 SdHoareTripleChecker+Invalid, 9390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 9129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:59:20,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27326 Valid, 29475 Invalid, 9390 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [261 Valid, 9129 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-11-08 18:59:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69220 states. [2024-11-08 18:59:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69220 to 37852. [2024-11-08 18:59:22,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37852 states, 37850 states have (on average 1.2443593130779393) internal successors, (47099), 37851 states have internal predecessors, (47099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:59:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37852 states to 37852 states and 47099 transitions. [2024-11-08 18:59:22,829 INFO L78 Accepts]: Start accepts. Automaton has 37852 states and 47099 transitions. Word has length 77 [2024-11-08 18:59:22,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:59:22,829 INFO L471 AbstractCegarLoop]: Abstraction has 37852 states and 47099 transitions. [2024-11-08 18:59:22,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.9324324324324325) internal successors, (217), 74 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:59:22,830 INFO L276 IsEmpty]: Start isEmpty. Operand 37852 states and 47099 transitions. [2024-11-08 18:59:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-08 18:59:22,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:59:22,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:59:22,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 18:59:23,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 18:59:23,033 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:59:23,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:59:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1331806592, now seen corresponding path program 1 times [2024-11-08 18:59:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:59:23,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510803292] [2024-11-08 18:59:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:59:23,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:59:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:59:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:24,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:59:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510803292] [2024-11-08 18:59:24,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510803292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:59:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018267456] [2024-11-08 18:59:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:59:24,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:59:24,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:59:24,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:59:24,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:59:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:59:24,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 18:59:24,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:59:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:26,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:59:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:27,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018267456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:59:27,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:59:27,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 36 [2024-11-08 18:59:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145000421] [2024-11-08 18:59:27,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:59:27,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-08 18:59:27,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:59:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-08 18:59:27,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 18:59:27,199 INFO L87 Difference]: Start difference. First operand 37852 states and 47099 transitions. Second operand has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:59:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:59:32,870 INFO L93 Difference]: Finished difference Result 65047 states and 80717 transitions. [2024-11-08 18:59:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 18:59:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-08 18:59:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:59:32,923 INFO L225 Difference]: With dead ends: 65047 [2024-11-08 18:59:32,923 INFO L226 Difference]: Without dead ends: 50265 [2024-11-08 18:59:32,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=867, Invalid=3293, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 18:59:32,936 INFO L432 NwaCegarLoop]: 1531 mSDtfsCounter, 12391 mSDsluCounter, 11391 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12391 SdHoareTripleChecker+Valid, 12922 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:59:32,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12391 Valid, 12922 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 18:59:32,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50265 states. [2024-11-08 18:59:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50265 to 32503. [2024-11-08 18:59:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32503 states, 32501 states have (on average 1.2438386511184272) internal successors, (40426), 32502 states have internal predecessors, (40426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:59:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32503 states to 32503 states and 40426 transitions. [2024-11-08 18:59:35,051 INFO L78 Accepts]: Start accepts. Automaton has 32503 states and 40426 transitions. Word has length 78 [2024-11-08 18:59:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:59:35,052 INFO L471 AbstractCegarLoop]: Abstraction has 32503 states and 40426 transitions. [2024-11-08 18:59:35,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.277777777777778) internal successors, (190), 36 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:59:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand 32503 states and 40426 transitions. [2024-11-08 18:59:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 18:59:35,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:59:35,053 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] [2024-11-08 18:59:35,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:59:35,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 18:59:35,254 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:59:35,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:59:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1324254270, now seen corresponding path program 1 times [2024-11-08 18:59:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:59:35,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159421635] [2024-11-08 18:59:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:59:35,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:59:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:59:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:36,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:59:36,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159421635] [2024-11-08 18:59:36,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159421635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:59:36,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887562486] [2024-11-08 18:59:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:59:36,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:59:36,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:59:36,190 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:59:36,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:59:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:59:36,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 18:59:36,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:59:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:38,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:59:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:42,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887562486] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:59:42,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:59:42,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 20] total 49 [2024-11-08 18:59:42,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849717509] [2024-11-08 18:59:42,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:59:42,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 18:59:42,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:59:42,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 18:59:42,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1995, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 18:59:42,103 INFO L87 Difference]: Start difference. First operand 32503 states and 40426 transitions. Second operand has 49 states, 49 states have (on average 4.1020408163265305) internal successors, (201), 49 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:59:49,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:59:49,034 INFO L93 Difference]: Finished difference Result 45532 states and 56399 transitions. [2024-11-08 18:59:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-08 18:59:49,035 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.1020408163265305) internal successors, (201), 49 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-08 18:59:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:59:49,058 INFO L225 Difference]: With dead ends: 45532 [2024-11-08 18:59:49,058 INFO L226 Difference]: Without dead ends: 31591 [2024-11-08 18:59:49,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1833, Invalid=6357, Unknown=0, NotChecked=0, Total=8190 [2024-11-08 18:59:49,068 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 23159 mSDsluCounter, 17399 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23159 SdHoareTripleChecker+Valid, 18943 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:59:49,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23159 Valid, 18943 Invalid, 1708 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:59:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31591 states. [2024-11-08 18:59:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31591 to 24850. [2024-11-08 18:59:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24850 states, 24848 states have (on average 1.2503219575016098) internal successors, (31068), 24849 states have internal predecessors, (31068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:59:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24850 states to 24850 states and 31068 transitions. [2024-11-08 18:59:50,442 INFO L78 Accepts]: Start accepts. Automaton has 24850 states and 31068 transitions. Word has length 79 [2024-11-08 18:59:50,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:59:50,443 INFO L471 AbstractCegarLoop]: Abstraction has 24850 states and 31068 transitions. [2024-11-08 18:59:50,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.1020408163265305) internal successors, (201), 49 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:59:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand 24850 states and 31068 transitions. [2024-11-08 18:59:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-08 18:59:50,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:59:50,448 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:59:50,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:59:50,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:59:50,649 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:59:50,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:59:50,649 INFO L85 PathProgramCache]: Analyzing trace with hash -585728908, now seen corresponding path program 1 times [2024-11-08 18:59:50,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:59:50,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908116765] [2024-11-08 18:59:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:59:50,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:59:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:59:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:51,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:59:51,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908116765] [2024-11-08 18:59:51,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908116765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:59:51,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844985585] [2024-11-08 18:59:51,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:59:51,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:59:51,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:59:51,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:59:51,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:59:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:59:51,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 18:59:51,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:59:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:53,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:59:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:59:55,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844985585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:59:55,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:59:55,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 11] total 33 [2024-11-08 18:59:55,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844110111] [2024-11-08 18:59:55,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:59:55,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 18:59:55,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:59:55,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 18:59:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 18:59:55,210 INFO L87 Difference]: Start difference. First operand 24850 states and 31068 transitions. Second operand has 33 states, 33 states have (on average 10.424242424242424) internal successors, (344), 33 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:01,909 INFO L93 Difference]: Finished difference Result 46220 states and 56900 transitions. [2024-11-08 19:00:01,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 19:00:01,909 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 10.424242424242424) internal successors, (344), 33 states have internal predecessors, (344), 0 states have call successors, (0), 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 124 [2024-11-08 19:00:01,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:01,935 INFO L225 Difference]: With dead ends: 46220 [2024-11-08 19:00:01,936 INFO L226 Difference]: Without dead ends: 35606 [2024-11-08 19:00:01,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1076, Invalid=4474, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 19:00:01,945 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 18231 mSDsluCounter, 17149 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18231 SdHoareTripleChecker+Valid, 18670 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:01,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18231 Valid, 18670 Invalid, 1556 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 19:00:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35606 states. [2024-11-08 19:00:03,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35606 to 25510. [2024-11-08 19:00:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25510 states, 25508 states have (on average 1.2423161361141604) internal successors, (31689), 25509 states have internal predecessors, (31689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25510 states to 25510 states and 31689 transitions. [2024-11-08 19:00:03,597 INFO L78 Accepts]: Start accepts. Automaton has 25510 states and 31689 transitions. Word has length 124 [2024-11-08 19:00:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:03,598 INFO L471 AbstractCegarLoop]: Abstraction has 25510 states and 31689 transitions. [2024-11-08 19:00:03,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.424242424242424) internal successors, (344), 33 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:03,598 INFO L276 IsEmpty]: Start isEmpty. Operand 25510 states and 31689 transitions. [2024-11-08 19:00:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 19:00:03,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:03,605 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:03,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 19:00:03,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 19:00:03,806 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:03,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:03,807 INFO L85 PathProgramCache]: Analyzing trace with hash -406572592, now seen corresponding path program 1 times [2024-11-08 19:00:03,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:03,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561887684] [2024-11-08 19:00:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:03,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 25 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:04,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:04,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561887684] [2024-11-08 19:00:04,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561887684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:04,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781649267] [2024-11-08 19:00:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:04,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:04,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:04,930 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:04,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 19:00:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:05,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 19:00:05,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:06,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:00:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:12,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781649267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:00:12,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:00:12,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 51 [2024-11-08 19:00:12,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458774676] [2024-11-08 19:00:12,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:00:12,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-08 19:00:12,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:12,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-08 19:00:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2351, Unknown=0, NotChecked=0, Total=2550 [2024-11-08 19:00:12,225 INFO L87 Difference]: Start difference. First operand 25510 states and 31689 transitions. Second operand has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:00:45,203 INFO L93 Difference]: Finished difference Result 72550 states and 89431 transitions. [2024-11-08 19:00:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-11-08 19:00:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 0 states have call successors, (0), 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 125 [2024-11-08 19:00:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:00:45,264 INFO L225 Difference]: With dead ends: 72550 [2024-11-08 19:00:45,265 INFO L226 Difference]: Without dead ends: 58271 [2024-11-08 19:00:45,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11274 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=5951, Invalid=29581, Unknown=0, NotChecked=0, Total=35532 [2024-11-08 19:00:45,276 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 33465 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33465 SdHoareTripleChecker+Valid, 18791 SdHoareTripleChecker+Invalid, 3036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:00:45,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33465 Valid, 18791 Invalid, 3036 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [133 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 19:00:45,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58271 states. [2024-11-08 19:00:47,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58271 to 28062. [2024-11-08 19:00:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28062 states, 28060 states have (on average 1.2197434069850321) internal successors, (34226), 28061 states have internal predecessors, (34226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28062 states to 28062 states and 34226 transitions. [2024-11-08 19:00:47,251 INFO L78 Accepts]: Start accepts. Automaton has 28062 states and 34226 transitions. Word has length 125 [2024-11-08 19:00:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:00:47,252 INFO L471 AbstractCegarLoop]: Abstraction has 28062 states and 34226 transitions. [2024-11-08 19:00:47,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.764705882352941) internal successors, (345), 51 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:00:47,252 INFO L276 IsEmpty]: Start isEmpty. Operand 28062 states and 34226 transitions. [2024-11-08 19:00:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 19:00:47,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:00:47,258 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:00:47,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 19:00:47,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 19:00:47,458 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:00:47,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:00:47,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1565094272, now seen corresponding path program 1 times [2024-11-08 19:00:47,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:00:47,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243366892] [2024-11-08 19:00:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:47,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:00:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:50,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:00:50,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243366892] [2024-11-08 19:00:50,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243366892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:00:50,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626462795] [2024-11-08 19:00:50,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:00:50,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:00:50,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:00:50,136 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:00:50,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 19:00:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:00:50,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 19:00:50,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:00:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:51,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:00:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:00:53,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626462795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:00:53,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:00:53,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 38 [2024-11-08 19:00:53,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756252733] [2024-11-08 19:00:53,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:00:53,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 19:00:53,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:00:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 19:00:53,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 19:00:53,780 INFO L87 Difference]: Start difference. First operand 28062 states and 34226 transitions. Second operand has 39 states, 39 states have (on average 8.0) internal successors, (312), 38 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:11,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:01:11,770 INFO L93 Difference]: Finished difference Result 53150 states and 64177 transitions. [2024-11-08 19:01:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-08 19:01:11,771 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 8.0) internal successors, (312), 38 states have internal predecessors, (312), 0 states have call successors, (0), 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 125 [2024-11-08 19:01:11,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:01:11,816 INFO L225 Difference]: With dead ends: 53150 [2024-11-08 19:01:11,816 INFO L226 Difference]: Without dead ends: 34587 [2024-11-08 19:01:11,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=2810, Invalid=10762, Unknown=0, NotChecked=0, Total=13572 [2024-11-08 19:01:11,835 INFO L432 NwaCegarLoop]: 1592 mSDtfsCounter, 27645 mSDsluCounter, 17717 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27645 SdHoareTripleChecker+Valid, 19309 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:01:11,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27645 Valid, 19309 Invalid, 2677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 19:01:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34587 states. [2024-11-08 19:01:13,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34587 to 23401. [2024-11-08 19:01:13,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23401 states, 23399 states have (on average 1.2137698192230437) internal successors, (28401), 23400 states have internal predecessors, (28401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:13,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23401 states to 23401 states and 28401 transitions. [2024-11-08 19:01:13,902 INFO L78 Accepts]: Start accepts. Automaton has 23401 states and 28401 transitions. Word has length 125 [2024-11-08 19:01:13,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:01:13,902 INFO L471 AbstractCegarLoop]: Abstraction has 23401 states and 28401 transitions. [2024-11-08 19:01:13,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.0) internal successors, (312), 38 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 23401 states and 28401 transitions. [2024-11-08 19:01:13,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 19:01:13,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:01:13,908 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:01:13,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 19:01:14,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:01:14,109 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:01:14,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:14,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1963072020, now seen corresponding path program 1 times [2024-11-08 19:01:14,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:14,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647283878] [2024-11-08 19:01:14,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:14,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:15,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:01:15,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647283878] [2024-11-08 19:01:15,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647283878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:01:15,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625256992] [2024-11-08 19:01:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:15,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:01:15,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:01:15,600 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:01:15,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 19:01:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:15,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 19:01:15,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:01:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:16,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:01:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 34 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:18,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625256992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:01:18,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:01:18,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2024-11-08 19:01:18,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013027978] [2024-11-08 19:01:18,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:01:18,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 19:01:18,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:18,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 19:01:18,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2024-11-08 19:01:18,853 INFO L87 Difference]: Start difference. First operand 23401 states and 28401 transitions. Second operand has 32 states, 32 states have (on average 9.40625) internal successors, (301), 31 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:01:24,527 INFO L93 Difference]: Finished difference Result 47684 states and 57360 transitions. [2024-11-08 19:01:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-08 19:01:24,528 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.40625) internal successors, (301), 31 states have internal predecessors, (301), 0 states have call successors, (0), 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 125 [2024-11-08 19:01:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:01:24,560 INFO L225 Difference]: With dead ends: 47684 [2024-11-08 19:01:24,560 INFO L226 Difference]: Without dead ends: 39525 [2024-11-08 19:01:24,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1200, Invalid=4350, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 19:01:24,570 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 17551 mSDsluCounter, 12668 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17551 SdHoareTripleChecker+Valid, 14245 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 19:01:24,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17551 Valid, 14245 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 19:01:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39525 states. [2024-11-08 19:01:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39525 to 23401. [2024-11-08 19:01:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23401 states, 23399 states have (on average 1.2088550792768922) internal successors, (28286), 23400 states have internal predecessors, (28286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23401 states to 23401 states and 28286 transitions. [2024-11-08 19:01:26,403 INFO L78 Accepts]: Start accepts. Automaton has 23401 states and 28286 transitions. Word has length 125 [2024-11-08 19:01:26,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:01:26,403 INFO L471 AbstractCegarLoop]: Abstraction has 23401 states and 28286 transitions. [2024-11-08 19:01:26,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.40625) internal successors, (301), 31 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:01:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 23401 states and 28286 transitions. [2024-11-08 19:01:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 19:01:26,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:01:26,407 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:01:26,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 19:01:26,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:01:26,611 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:01:26,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:01:26,611 INFO L85 PathProgramCache]: Analyzing trace with hash -255976000, now seen corresponding path program 1 times [2024-11-08 19:01:26,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:01:26,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607704551] [2024-11-08 19:01:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:26,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:01:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:28,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:01:28,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607704551] [2024-11-08 19:01:28,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607704551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:01:28,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723968585] [2024-11-08 19:01:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:01:28,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:01:28,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:01:28,648 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:01:28,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 19:01:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:01:28,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-08 19:01:28,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:01:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 44 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:34,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:01:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 32 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:01:44,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723968585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:01:44,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:01:44,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 25] total 76 [2024-11-08 19:01:44,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765416999] [2024-11-08 19:01:44,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:01:44,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-08 19:01:44,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:01:44,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-08 19:01:44,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=5079, Unknown=0, NotChecked=0, Total=5700 [2024-11-08 19:01:44,713 INFO L87 Difference]: Start difference. First operand 23401 states and 28286 transitions. Second operand has 76 states, 76 states have (on average 4.578947368421052) internal successors, (348), 76 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:03:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:03:56,625 INFO L93 Difference]: Finished difference Result 86032 states and 102383 transitions. [2024-11-08 19:03:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2024-11-08 19:03:56,625 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.578947368421052) internal successors, (348), 76 states have internal predecessors, (348), 0 states have call successors, (0), 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 126 [2024-11-08 19:03:56,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:03:56,689 INFO L225 Difference]: With dead ends: 86032 [2024-11-08 19:03:56,689 INFO L226 Difference]: Without dead ends: 78942 [2024-11-08 19:03:56,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38736 ImplicationChecksByTransitivity, 121.9s TimeCoverageRelationStatistics Valid=15680, Invalid=85126, Unknown=0, NotChecked=0, Total=100806 [2024-11-08 19:03:56,705 INFO L432 NwaCegarLoop]: 1601 mSDtfsCounter, 37028 mSDsluCounter, 37748 mSDsCounter, 0 mSdLazyCounter, 5324 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37028 SdHoareTripleChecker+Valid, 39349 SdHoareTripleChecker+Invalid, 5625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 5324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:03:56,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37028 Valid, 39349 Invalid, 5625 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [301 Valid, 5324 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-08 19:03:56,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78942 states. [2024-11-08 19:04:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78942 to 37027. [2024-11-08 19:04:00,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37027 states, 37025 states have (on average 1.202052667116813) internal successors, (44506), 37026 states have internal predecessors, (44506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:04:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37027 states to 37027 states and 44506 transitions. [2024-11-08 19:04:00,619 INFO L78 Accepts]: Start accepts. Automaton has 37027 states and 44506 transitions. Word has length 126 [2024-11-08 19:04:00,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:04:00,620 INFO L471 AbstractCegarLoop]: Abstraction has 37027 states and 44506 transitions. [2024-11-08 19:04:00,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.578947368421052) internal successors, (348), 76 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:04:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 37027 states and 44506 transitions. [2024-11-08 19:04:00,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-08 19:04:00,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:04:00,623 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:04:00,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 19:04:00,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:04:00,824 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:04:00,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:04:00,824 INFO L85 PathProgramCache]: Analyzing trace with hash 887682080, now seen corresponding path program 1 times [2024-11-08 19:04:00,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:04:00,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973003211] [2024-11-08 19:04:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:04:00,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:04:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:04:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:04:02,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:04:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973003211] [2024-11-08 19:04:02,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973003211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:04:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466905662] [2024-11-08 19:04:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:04:02,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:04:02,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:04:02,344 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:04:02,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_652b441a-55ef-42bd-8b2b-d66765dad302/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 19:04:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:04:02,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 19:04:02,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:04:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 34 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:04:05,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:04:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 34 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:04:10,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466905662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:04:10,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:04:10,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 50 [2024-11-08 19:04:10,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547074446] [2024-11-08 19:04:10,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:04:10,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-08 19:04:10,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:04:10,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-08 19:04:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2266, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 19:04:10,049 INFO L87 Difference]: Start difference. First operand 37027 states and 44506 transitions. Second operand has 50 states, 50 states have (on average 7.06) internal successors, (353), 50 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:06:06,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:06:06,175 INFO L93 Difference]: Finished difference Result 190871 states and 224094 transitions. [2024-11-08 19:06:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 392 states. [2024-11-08 19:06:06,175 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.06) internal successors, (353), 50 states have internal predecessors, (353), 0 states have call successors, (0), 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 126 [2024-11-08 19:06:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:06:06,347 INFO L225 Difference]: With dead ends: 190871 [2024-11-08 19:06:06,347 INFO L226 Difference]: Without dead ends: 175090 [2024-11-08 19:06:06,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 436 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79243 ImplicationChecksByTransitivity, 82.6s TimeCoverageRelationStatistics Valid=15325, Invalid=176081, Unknown=0, NotChecked=0, Total=191406 [2024-11-08 19:06:06,383 INFO L432 NwaCegarLoop]: 1873 mSDtfsCounter, 23263 mSDsluCounter, 45143 mSDsCounter, 0 mSdLazyCounter, 12179 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23263 SdHoareTripleChecker+Valid, 47016 SdHoareTripleChecker+Invalid, 12330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 12179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2024-11-08 19:06:06,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23263 Valid, 47016 Invalid, 12330 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [151 Valid, 12179 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2024-11-08 19:06:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175090 states.