./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label40.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx --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 f0697d9089c8f644e106fd291328f66f211f5f9eb49bfcc0a5bab680b0bbbbc1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:21:20,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:21:20,461 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:21:20,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:21:20,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:21:20,517 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:21:20,519 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:21:20,519 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:21:20,521 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:21:20,526 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:21:20,527 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:21:20,528 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:21:20,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:21:20,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:21:20,531 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:21:20,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:21:20,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:21:20,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:21:20,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:21:20,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:21:20,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:21:20,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:21:20,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:21:20,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:21:20,538 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:21:20,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:21:20,539 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:21:20,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:21:20,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:21:20,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:21:20,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:21:20,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:20,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:21:20,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:21:20,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:21:20,544 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:21:20,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:21:20,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:21:20,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:21:20,544 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:21:20,545 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:21:20,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:21:20,545 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_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0697d9089c8f644e106fd291328f66f211f5f9eb49bfcc0a5bab680b0bbbbc1 [2023-11-21 22:21:20,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:21:20,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:21:20,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:21:20,942 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:21:20,942 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:21:20,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/eca-rers2012/Problem02_label40.c [2023-11-21 22:21:24,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:21:24,960 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:21:24,975 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/sv-benchmarks/c/eca-rers2012/Problem02_label40.c [2023-11-21 22:21:24,997 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/data/1d0412722/613b5614d9404540873f868602701c57/FLAG2d0096ddf [2023-11-21 22:21:25,021 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/data/1d0412722/613b5614d9404540873f868602701c57 [2023-11-21 22:21:25,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:21:25,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:21:25,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:25,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:21:25,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:21:25,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c24b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25, skipping insertion in model container [2023-11-21 22:21:25,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,124 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:21:25,584 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/sv-benchmarks/c/eca-rers2012/Problem02_label40.c[15538,15551] [2023-11-21 22:21:25,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:25,654 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:21:25,810 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/sv-benchmarks/c/eca-rers2012/Problem02_label40.c[15538,15551] [2023-11-21 22:21:25,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:25,877 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:21:25,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25 WrapperNode [2023-11-21 22:21:25,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:25,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:25,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:21:25,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:21:25,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:25,998 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2023-11-21 22:21:25,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:25,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:21:26,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:21:26,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:21:26,016 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:26,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:26,023 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:26,063 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:21:26,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:26,065 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:26,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:26,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:26,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:26,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:26,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:21:26,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:21:26,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:21:26,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:21:26,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (1/1) ... [2023-11-21 22:21:26,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:26,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:26,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:21:26,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:21:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:21:26,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:21:26,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:21:26,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:21:26,440 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:21:26,444 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:21:27,887 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:21:28,409 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:21:28,409 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:21:28,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:28 BoogieIcfgContainer [2023-11-21 22:21:28,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:21:28,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:21:28,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:21:28,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:21:28,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:21:25" (1/3) ... [2023-11-21 22:21:28,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550bd824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:28, skipping insertion in model container [2023-11-21 22:21:28,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:25" (2/3) ... [2023-11-21 22:21:28,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550bd824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:28, skipping insertion in model container [2023-11-21 22:21:28,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:28" (3/3) ... [2023-11-21 22:21:28,424 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label40.c [2023-11-21 22:21:28,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:21:28,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:21:28,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:21:28,517 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@da3e672, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:21:28,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:21:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:28,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-21 22:21:28,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:28,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:28,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:28,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:28,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1243319475, now seen corresponding path program 1 times [2023-11-21 22:21:28,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:28,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83771737] [2023-11-21 22:21:28,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:28,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:29,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:29,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83771737] [2023-11-21 22:21:29,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83771737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:29,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:29,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:21:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050523408] [2023-11-21 22:21:29,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:29,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:29,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:29,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:29,373 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 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 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:29,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:29,936 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2023-11-21 22:21:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:29,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-21 22:21:29,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:29,951 INFO L225 Difference]: With dead ends: 251 [2023-11-21 22:21:29,951 INFO L226 Difference]: Without dead ends: 163 [2023-11-21 22:21:29,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:29,958 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:29,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 29 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:21:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-21 22:21:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-21 22:21:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.808641975308642) internal successors, (293), 162 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 293 transitions. [2023-11-21 22:21:30,018 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 293 transitions. Word has length 80 [2023-11-21 22:21:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:30,019 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 293 transitions. [2023-11-21 22:21:30,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 293 transitions. [2023-11-21 22:21:30,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-21 22:21:30,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:30,026 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:30,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:21:30,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:30,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:30,028 INFO L85 PathProgramCache]: Analyzing trace with hash 496251058, now seen corresponding path program 1 times [2023-11-21 22:21:30,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:30,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19688959] [2023-11-21 22:21:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:30,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:30,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:30,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19688959] [2023-11-21 22:21:30,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19688959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:30,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:30,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:21:30,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26067340] [2023-11-21 22:21:30,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:30,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:30,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:30,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:30,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:30,227 INFO L87 Difference]: Start difference. First operand 163 states and 293 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:30,790 INFO L93 Difference]: Finished difference Result 485 states and 876 transitions. [2023-11-21 22:21:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:30,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-11-21 22:21:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:30,795 INFO L225 Difference]: With dead ends: 485 [2023-11-21 22:21:30,795 INFO L226 Difference]: Without dead ends: 323 [2023-11-21 22:21:30,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:30,798 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 75 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:30,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 62 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:21:30,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-11-21 22:21:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2023-11-21 22:21:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 322 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:30,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 484 transitions. [2023-11-21 22:21:30,868 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 484 transitions. Word has length 88 [2023-11-21 22:21:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:30,869 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 484 transitions. [2023-11-21 22:21:30,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:30,869 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 484 transitions. [2023-11-21 22:21:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-21 22:21:30,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:30,875 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:30,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:21:30,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:30,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2122116546, now seen corresponding path program 1 times [2023-11-21 22:21:30,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:30,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733113238] [2023-11-21 22:21:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:30,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:31,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:31,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733113238] [2023-11-21 22:21:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733113238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:31,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:31,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:31,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321558060] [2023-11-21 22:21:31,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:31,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:31,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:31,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:31,184 INFO L87 Difference]: Start difference. First operand 323 states and 484 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:31,643 INFO L93 Difference]: Finished difference Result 965 states and 1449 transitions. [2023-11-21 22:21:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:31,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-11-21 22:21:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:31,654 INFO L225 Difference]: With dead ends: 965 [2023-11-21 22:21:31,654 INFO L226 Difference]: Without dead ends: 643 [2023-11-21 22:21:31,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:31,668 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:31,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 167 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:21:31,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-11-21 22:21:31,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 563. [2023-11-21 22:21:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.4572953736654803) internal successors, (819), 562 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:31,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 819 transitions. [2023-11-21 22:21:31,724 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 819 transitions. Word has length 89 [2023-11-21 22:21:31,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:31,725 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 819 transitions. [2023-11-21 22:21:31,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 819 transitions. [2023-11-21 22:21:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-21 22:21:31,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:31,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:31,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:21:31,741 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:31,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1660256073, now seen corresponding path program 1 times [2023-11-21 22:21:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:31,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790830090] [2023-11-21 22:21:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:31,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:31,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790830090] [2023-11-21 22:21:31,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790830090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:31,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:31,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:21:31,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971454205] [2023-11-21 22:21:31,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:31,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:31,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:31,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:31,888 INFO L87 Difference]: Start difference. First operand 563 states and 819 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:32,402 INFO L93 Difference]: Finished difference Result 1605 states and 2358 transitions. [2023-11-21 22:21:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:32,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-21 22:21:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:32,410 INFO L225 Difference]: With dead ends: 1605 [2023-11-21 22:21:32,411 INFO L226 Difference]: Without dead ends: 1043 [2023-11-21 22:21:32,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:32,414 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 111 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:32,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 28 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:21:32,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2023-11-21 22:21:32,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2023-11-21 22:21:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.3915547024952015) internal successors, (1450), 1042 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1450 transitions. [2023-11-21 22:21:32,452 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1450 transitions. Word has length 90 [2023-11-21 22:21:32,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:32,453 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1450 transitions. [2023-11-21 22:21:32,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1450 transitions. [2023-11-21 22:21:32,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-21 22:21:32,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:32,457 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:32,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:21:32,458 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:32,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:32,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1140938889, now seen corresponding path program 1 times [2023-11-21 22:21:32,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:32,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763352301] [2023-11-21 22:21:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 22:21:32,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763352301] [2023-11-21 22:21:32,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763352301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169411290] [2023-11-21 22:21:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:32,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:32,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:32,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:32,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:21:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:32,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:21:32,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:21:33,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:33,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169411290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:33,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:21:33,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-21 22:21:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346460054] [2023-11-21 22:21:33,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:33,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:33,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:33,181 INFO L87 Difference]: Start difference. First operand 1043 states and 1450 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:33,714 INFO L93 Difference]: Finished difference Result 2645 states and 3697 transitions. [2023-11-21 22:21:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:33,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-21 22:21:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:33,729 INFO L225 Difference]: With dead ends: 2645 [2023-11-21 22:21:33,731 INFO L226 Difference]: Without dead ends: 1523 [2023-11-21 22:21:33,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:33,737 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 42 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:33,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 41 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:21:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2023-11-21 22:21:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2023-11-21 22:21:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.3515111695137976) internal successors, (2057), 1522 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2057 transitions. [2023-11-21 22:21:33,792 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2057 transitions. Word has length 93 [2023-11-21 22:21:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:33,795 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2057 transitions. [2023-11-21 22:21:33,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2057 transitions. [2023-11-21 22:21:33,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-21 22:21:33,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:33,800 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:33,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:34,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:34,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:34,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1843283988, now seen corresponding path program 1 times [2023-11-21 22:21:34,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:34,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232347327] [2023-11-21 22:21:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 22:21:34,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:34,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232347327] [2023-11-21 22:21:34,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232347327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:34,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:34,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:34,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428240261] [2023-11-21 22:21:34,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:34,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:34,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:34,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:34,292 INFO L87 Difference]: Start difference. First operand 1523 states and 2057 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:34,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:34,818 INFO L93 Difference]: Finished difference Result 3445 states and 4740 transitions. [2023-11-21 22:21:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:34,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-21 22:21:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:34,838 INFO L225 Difference]: With dead ends: 3445 [2023-11-21 22:21:34,838 INFO L226 Difference]: Without dead ends: 1923 [2023-11-21 22:21:34,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:34,843 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 77 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:34,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 139 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:21:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2023-11-21 22:21:34,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1843. [2023-11-21 22:21:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1842 states have (on average 1.3165038002171552) internal successors, (2425), 1842 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2425 transitions. [2023-11-21 22:21:34,948 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2425 transitions. Word has length 97 [2023-11-21 22:21:34,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:34,949 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 2425 transitions. [2023-11-21 22:21:34,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2425 transitions. [2023-11-21 22:21:34,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-21 22:21:34,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:34,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:34,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:21:34,956 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:34,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:34,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1624435802, now seen corresponding path program 1 times [2023-11-21 22:21:34,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:34,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473265288] [2023-11-21 22:21:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:35,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:35,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473265288] [2023-11-21 22:21:35,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473265288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:35,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:35,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:35,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928880597] [2023-11-21 22:21:35,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:35,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:35,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:35,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:35,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:35,098 INFO L87 Difference]: Start difference. First operand 1843 states and 2425 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:35,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:35,632 INFO L93 Difference]: Finished difference Result 4005 states and 5238 transitions. [2023-11-21 22:21:35,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:35,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-11-21 22:21:35,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:35,647 INFO L225 Difference]: With dead ends: 4005 [2023-11-21 22:21:35,648 INFO L226 Difference]: Without dead ends: 2163 [2023-11-21 22:21:35,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:35,653 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 77 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:35,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 25 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:21:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2023-11-21 22:21:35,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2023-11-21 22:21:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2645698427382053) internal successors, (2734), 2162 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2734 transitions. [2023-11-21 22:21:35,730 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2734 transitions. Word has length 109 [2023-11-21 22:21:35,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:35,731 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 2734 transitions. [2023-11-21 22:21:35,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:35,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2734 transitions. [2023-11-21 22:21:35,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-21 22:21:35,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:35,737 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:35,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:21:35,739 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:35,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:35,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1623610163, now seen corresponding path program 1 times [2023-11-21 22:21:35,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:35,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315582236] [2023-11-21 22:21:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:35,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-21 22:21:36,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:36,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315582236] [2023-11-21 22:21:36,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315582236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:36,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:36,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:36,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225005264] [2023-11-21 22:21:36,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:36,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:36,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:36,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:36,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:36,032 INFO L87 Difference]: Start difference. First operand 2163 states and 2734 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:36,572 INFO L93 Difference]: Finished difference Result 4325 states and 5467 transitions. [2023-11-21 22:21:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:36,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-11-21 22:21:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:36,587 INFO L225 Difference]: With dead ends: 4325 [2023-11-21 22:21:36,587 INFO L226 Difference]: Without dead ends: 2163 [2023-11-21 22:21:36,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:36,594 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 78 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:36,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 143 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:21:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2023-11-21 22:21:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2023-11-21 22:21:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2391304347826086) internal successors, (2679), 2162 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:36,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2679 transitions. [2023-11-21 22:21:36,673 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2679 transitions. Word has length 118 [2023-11-21 22:21:36,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:36,674 INFO L495 AbstractCegarLoop]: Abstraction has 2163 states and 2679 transitions. [2023-11-21 22:21:36,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:36,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2679 transitions. [2023-11-21 22:21:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-21 22:21:36,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:36,681 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-21 22:21:36,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:21:36,682 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:36,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1594124895, now seen corresponding path program 1 times [2023-11-21 22:21:36,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:36,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4334850] [2023-11-21 22:21:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:36,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-21 22:21:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4334850] [2023-11-21 22:21:36,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4334850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:36,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:36,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:21:36,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61144422] [2023-11-21 22:21:36,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:36,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:36,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:36,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:36,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:36,888 INFO L87 Difference]: Start difference. First operand 2163 states and 2679 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:37,163 INFO L93 Difference]: Finished difference Result 3925 states and 4897 transitions. [2023-11-21 22:21:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:37,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 139 [2023-11-21 22:21:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:37,176 INFO L225 Difference]: With dead ends: 3925 [2023-11-21 22:21:37,176 INFO L226 Difference]: Without dead ends: 1683 [2023-11-21 22:21:37,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:37,183 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 99 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:37,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 4 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:21:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2023-11-21 22:21:37,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1683. [2023-11-21 22:21:37,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.2045184304399525) internal successors, (2026), 1682 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2026 transitions. [2023-11-21 22:21:37,249 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2026 transitions. Word has length 139 [2023-11-21 22:21:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:37,250 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2026 transitions. [2023-11-21 22:21:37,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2026 transitions. [2023-11-21 22:21:37,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-21 22:21:37,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:37,256 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:37,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:21:37,257 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:37,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:37,257 INFO L85 PathProgramCache]: Analyzing trace with hash -82577802, now seen corresponding path program 1 times [2023-11-21 22:21:37,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:37,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279906651] [2023-11-21 22:21:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:37,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 22:21:37,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:37,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279906651] [2023-11-21 22:21:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279906651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:37,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:37,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:37,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658599114] [2023-11-21 22:21:37,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:37,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:37,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:37,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:37,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:37,490 INFO L87 Difference]: Start difference. First operand 1683 states and 2026 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:37,936 INFO L93 Difference]: Finished difference Result 3605 states and 4407 transitions. [2023-11-21 22:21:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:37,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 152 [2023-11-21 22:21:37,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:37,951 INFO L225 Difference]: With dead ends: 3605 [2023-11-21 22:21:37,951 INFO L226 Difference]: Without dead ends: 2003 [2023-11-21 22:21:37,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:37,955 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:37,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 103 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:21:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2023-11-21 22:21:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1523. [2023-11-21 22:21:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.216819973718791) internal successors, (1852), 1522 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1852 transitions. [2023-11-21 22:21:38,023 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1852 transitions. Word has length 152 [2023-11-21 22:21:38,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:38,023 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 1852 transitions. [2023-11-21 22:21:38,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:38,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1852 transitions. [2023-11-21 22:21:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-21 22:21:38,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:38,029 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:38,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:21:38,030 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:38,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2147234329, now seen corresponding path program 1 times [2023-11-21 22:21:38,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:38,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001730947] [2023-11-21 22:21:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:38,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:21:38,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:38,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001730947] [2023-11-21 22:21:38,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001730947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:38,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:38,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:21:38,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985855006] [2023-11-21 22:21:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:38,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:38,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:38,265 INFO L87 Difference]: Start difference. First operand 1523 states and 1852 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:38,665 INFO L93 Difference]: Finished difference Result 2565 states and 3086 transitions. [2023-11-21 22:21:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:38,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 165 [2023-11-21 22:21:38,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:38,675 INFO L225 Difference]: With dead ends: 2565 [2023-11-21 22:21:38,675 INFO L226 Difference]: Without dead ends: 1203 [2023-11-21 22:21:38,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:38,678 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 33 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:38,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 132 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:21:38,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-11-21 22:21:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2023-11-21 22:21:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.1106489184692179) internal successors, (1335), 1202 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:38,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1335 transitions. [2023-11-21 22:21:38,713 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1335 transitions. Word has length 165 [2023-11-21 22:21:38,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:38,714 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1335 transitions. [2023-11-21 22:21:38,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1335 transitions. [2023-11-21 22:21:38,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-21 22:21:38,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:38,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:38,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:21:38,720 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:38,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1384423110, now seen corresponding path program 1 times [2023-11-21 22:21:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:38,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599753140] [2023-11-21 22:21:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:38,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:39,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599753140] [2023-11-21 22:21:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599753140] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:39,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:39,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:21:39,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660776345] [2023-11-21 22:21:39,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:39,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:21:39,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:21:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:39,070 INFO L87 Difference]: Start difference. First operand 1203 states and 1335 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:39,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:39,610 INFO L93 Difference]: Finished difference Result 2325 states and 2586 transitions. [2023-11-21 22:21:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:21:39,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2023-11-21 22:21:39,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:39,618 INFO L225 Difference]: With dead ends: 2325 [2023-11-21 22:21:39,619 INFO L226 Difference]: Without dead ends: 1203 [2023-11-21 22:21:39,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:39,622 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 123 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:39,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 115 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:21:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-11-21 22:21:39,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2023-11-21 22:21:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.1073211314475873) internal successors, (1331), 1202 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1331 transitions. [2023-11-21 22:21:39,670 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1331 transitions. Word has length 178 [2023-11-21 22:21:39,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:39,671 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1331 transitions. [2023-11-21 22:21:39,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:39,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1331 transitions. [2023-11-21 22:21:39,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-21 22:21:39,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:39,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:39,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:21:39,677 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:39,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1069410124, now seen corresponding path program 1 times [2023-11-21 22:21:39,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:39,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723190576] [2023-11-21 22:21:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:39,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 93 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:40,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:40,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723190576] [2023-11-21 22:21:40,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723190576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:40,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644267301] [2023-11-21 22:21:40,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:40,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:40,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:40,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:40,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:21:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:40,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:21:40,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-21 22:21:41,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644267301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:41,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:21:41,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-21 22:21:41,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379916692] [2023-11-21 22:21:41,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:41,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:41,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:41,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:41,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:21:41,039 INFO L87 Difference]: Start difference. First operand 1203 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:41,396 INFO L93 Difference]: Finished difference Result 2645 states and 2951 transitions. [2023-11-21 22:21:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:41,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2023-11-21 22:21:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:41,408 INFO L225 Difference]: With dead ends: 2645 [2023-11-21 22:21:41,408 INFO L226 Difference]: Without dead ends: 1523 [2023-11-21 22:21:41,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:21:41,412 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:41,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 101 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:21:41,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2023-11-21 22:21:41,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 963. [2023-11-21 22:21:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.0966735966735968) internal successors, (1055), 962 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:41,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1055 transitions. [2023-11-21 22:21:41,453 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1055 transitions. Word has length 210 [2023-11-21 22:21:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:41,454 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1055 transitions. [2023-11-21 22:21:41,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1055 transitions. [2023-11-21 22:21:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-11-21 22:21:41,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:41,460 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:41,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:41,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 22:21:41,684 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:41,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:41,684 INFO L85 PathProgramCache]: Analyzing trace with hash -608425807, now seen corresponding path program 1 times [2023-11-21 22:21:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:41,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041560514] [2023-11-21 22:21:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:41,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 22:21:42,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041560514] [2023-11-21 22:21:42,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041560514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:42,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:42,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:21:42,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607994690] [2023-11-21 22:21:42,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:42,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:21:42,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:42,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:21:42,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:42,185 INFO L87 Difference]: Start difference. First operand 963 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:42,753 INFO L93 Difference]: Finished difference Result 1845 states and 2026 transitions. [2023-11-21 22:21:42,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:21:42,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-11-21 22:21:42,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:42,761 INFO L225 Difference]: With dead ends: 1845 [2023-11-21 22:21:42,761 INFO L226 Difference]: Without dead ends: 963 [2023-11-21 22:21:42,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:21:42,764 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 89 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:42,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 129 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:21:42,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-11-21 22:21:42,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2023-11-21 22:21:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.0935550935550935) internal successors, (1052), 962 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1052 transitions. [2023-11-21 22:21:42,798 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1052 transitions. Word has length 223 [2023-11-21 22:21:42,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:42,799 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1052 transitions. [2023-11-21 22:21:42,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1052 transitions. [2023-11-21 22:21:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-21 22:21:42,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:42,806 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:42,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:21:42,806 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:42,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1240305460, now seen corresponding path program 1 times [2023-11-21 22:21:42,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:42,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852396689] [2023-11-21 22:21:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:42,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 192 proven. 177 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-21 22:21:44,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:44,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852396689] [2023-11-21 22:21:44,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852396689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:44,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768218465] [2023-11-21 22:21:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:44,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:44,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:44,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:44,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:21:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:44,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:21:44,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-21 22:21:46,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:46,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768218465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:46,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:21:46,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-21 22:21:46,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357138114] [2023-11-21 22:21:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:46,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:46,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:46,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:21:46,567 INFO L87 Difference]: Start difference. First operand 963 states and 1052 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:47,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:47,346 INFO L93 Difference]: Finished difference Result 1925 states and 2102 transitions. [2023-11-21 22:21:47,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:47,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 273 [2023-11-21 22:21:47,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:47,353 INFO L225 Difference]: With dead ends: 1925 [2023-11-21 22:21:47,353 INFO L226 Difference]: Without dead ends: 883 [2023-11-21 22:21:47,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:21:47,356 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 129 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:47,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 22 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:21:47,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-21 22:21:47,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2023-11-21 22:21:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.0861678004535147) internal successors, (958), 882 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 958 transitions. [2023-11-21 22:21:47,386 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 958 transitions. Word has length 273 [2023-11-21 22:21:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:47,387 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 958 transitions. [2023-11-21 22:21:47,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 958 transitions. [2023-11-21 22:21:47,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-11-21 22:21:47,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:21:47,394 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:47,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:47,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-21 22:21:47,608 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:21:47,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1995296388, now seen corresponding path program 1 times [2023-11-21 22:21:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:47,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554431198] [2023-11-21 22:21:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:47,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 197 proven. 197 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-21 22:21:48,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:48,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554431198] [2023-11-21 22:21:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554431198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:21:48,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709352398] [2023-11-21 22:21:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:48,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:21:48,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:48,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:21:48,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:21:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:49,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:21:49,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:21:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-21 22:21:50,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:21:50,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709352398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:50,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:21:50,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-21 22:21:50,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332287742] [2023-11-21 22:21:50,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:50,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:50,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:50,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:21:50,005 INFO L87 Difference]: Start difference. First operand 883 states and 958 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:21:50,350 INFO L93 Difference]: Finished difference Result 1363 states and 1464 transitions. [2023-11-21 22:21:50,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:50,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 278 [2023-11-21 22:21:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:21:50,351 INFO L225 Difference]: With dead ends: 1363 [2023-11-21 22:21:50,351 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 22:21:50,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:21:50,354 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:21:50,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 101 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:21:50,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 22:21:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 22:21:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 22:21:50,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 278 [2023-11-21 22:21:50,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:21:50,358 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:21:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 22:21:50,358 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 22:21:50,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 22:21:50,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:21:50,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-21 22:21:50,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 22:21:51,216 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2023-11-21 22:21:51,216 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2023-11-21 22:21:51,217 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2023-11-21 22:21:51,218 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2023-11-21 22:21:51,219 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2023-11-21 22:21:51,219 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2023-11-21 22:21:51,220 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2023-11-21 22:21:51,220 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2023-11-21 22:21:51,220 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2023-11-21 22:21:51,220 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2023-11-21 22:21:51,220 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2023-11-21 22:21:51,221 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2023-11-21 22:21:51,221 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2023-11-21 22:21:51,221 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2023-11-21 22:21:51,221 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2023-11-21 22:21:51,221 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2023-11-21 22:21:51,222 INFO L899 garLoopResultBuilder]: For program point L445-1(lines 39 608) no Hoare annotation was computed. [2023-11-21 22:21:51,222 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2023-11-21 22:21:51,222 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2023-11-21 22:21:51,222 INFO L899 garLoopResultBuilder]: For program point L448-1(lines 39 608) no Hoare annotation was computed. [2023-11-21 22:21:51,222 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2023-11-21 22:21:51,222 INFO L899 garLoopResultBuilder]: For program point L449(line 449) no Hoare annotation was computed. [2023-11-21 22:21:51,223 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2023-11-21 22:21:51,223 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2023-11-21 22:21:51,223 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2023-11-21 22:21:51,223 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2023-11-21 22:21:51,223 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2023-11-21 22:21:51,224 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2023-11-21 22:21:51,224 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2023-11-21 22:21:51,224 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 22:21:51,224 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2023-11-21 22:21:51,225 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2023-11-21 22:21:51,225 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2023-11-21 22:21:51,225 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2023-11-21 22:21:51,225 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2023-11-21 22:21:51,225 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2023-11-21 22:21:51,225 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2023-11-21 22:21:51,226 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2023-11-21 22:21:51,226 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2023-11-21 22:21:51,226 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 449) no Hoare annotation was computed. [2023-11-21 22:21:51,226 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2023-11-21 22:21:51,226 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2023-11-21 22:21:51,227 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2023-11-21 22:21:51,227 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2023-11-21 22:21:51,227 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2023-11-21 22:21:51,227 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2023-11-21 22:21:51,227 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2023-11-21 22:21:51,228 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2023-11-21 22:21:51,228 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2023-11-21 22:21:51,228 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2023-11-21 22:21:51,228 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2023-11-21 22:21:51,228 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2023-11-21 22:21:51,228 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2023-11-21 22:21:51,229 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2023-11-21 22:21:51,229 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2023-11-21 22:21:51,229 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2023-11-21 22:21:51,229 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2023-11-21 22:21:51,229 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2023-11-21 22:21:51,230 INFO L899 garLoopResultBuilder]: For program point L610(lines 610 627) no Hoare annotation was computed. [2023-11-21 22:21:51,230 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2023-11-21 22:21:51,230 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2023-11-21 22:21:51,230 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2023-11-21 22:21:51,230 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2023-11-21 22:21:51,230 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2023-11-21 22:21:51,231 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2023-11-21 22:21:51,231 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2023-11-21 22:21:51,233 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse2 (= ~a11~0 1)) (.cse3 (<= ~a17~0 7)) (.cse12 (<= ~a19~0 0)) (.cse9 (<= ~a11~0 0)) (.cse10 (<= ~a28~0 7)) (.cse5 (= ~a17~0 8)) (.cse8 (= ~a28~0 10)) (.cse7 (= ~a21~0 1)) (.cse0 (<= 9 ~a28~0)) (.cse1 (= ~a25~0 1)) (.cse11 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10)) (.cse6 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 (= 7 ~a28~0) .cse2 (not .cse6) .cse7) (and .cse3 .cse8 (not .cse1)) (and .cse5 .cse1 .cse7 .cse6) (and .cse5 .cse0 .cse7 .cse4 .cse6) (and .cse5 (= ~a25~0 ~a11~0) .cse7 .cse9 .cse6 .cse10) (and .cse1 .cse11 .cse6 .cse10) (and .cse8 .cse11 .cse6) (and .cse5 .cse7 .cse10 .cse12) (and .cse5 .cse7 (= ~a28~0 8) (= ~a25~0 0) .cse12) (and .cse1 .cse9 .cse6 .cse10) (and .cse5 .cse1 .cse8 .cse7) (and .cse0 .cse1 .cse11 .cse4 .cse6))) [2023-11-21 22:21:51,233 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2023-11-21 22:21:51,234 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2023-11-21 22:21:51,234 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2023-11-21 22:21:51,234 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2023-11-21 22:21:51,234 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2023-11-21 22:21:51,237 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2023-11-21 22:21:51,238 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2023-11-21 22:21:51,238 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2023-11-21 22:21:51,238 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2023-11-21 22:21:51,238 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2023-11-21 22:21:51,238 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 22:21:51,238 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2023-11-21 22:21:51,239 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2023-11-21 22:21:51,239 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2023-11-21 22:21:51,239 INFO L899 garLoopResultBuilder]: For program point calculate_output_returnLabel#1(lines 39 608) no Hoare annotation was computed. [2023-11-21 22:21:51,239 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2023-11-21 22:21:51,239 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2023-11-21 22:21:51,240 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2023-11-21 22:21:51,244 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:51,248 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:21:51,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:21:51 BoogieIcfgContainer [2023-11-21 22:21:51,279 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:21:51,279 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:21:51,279 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:21:51,280 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:21:51,280 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:28" (3/4) ... [2023-11-21 22:21:51,283 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:21:51,319 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 128 nodes and edges [2023-11-21 22:21:51,321 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-21 22:21:51,324 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-21 22:21:51,326 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 22:21:51,595 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:21:51,596 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:21:51,596 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:21:51,597 INFO L158 Benchmark]: Toolchain (without parser) took 26567.03ms. Allocated memory was 132.1MB in the beginning and 375.4MB in the end (delta: 243.3MB). Free memory was 91.9MB in the beginning and 244.5MB in the end (delta: -152.7MB). Peak memory consumption was 92.4MB. Max. memory is 16.1GB. [2023-11-21 22:21:51,598 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 132.1MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:21:51,599 INFO L158 Benchmark]: CACSL2BoogieTranslator took 844.17ms. Allocated memory is still 132.1MB. Free memory was 91.5MB in the beginning and 64.9MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-21 22:21:51,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.28ms. Allocated memory is still 132.1MB. Free memory was 64.9MB in the beginning and 59.4MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:21:51,600 INFO L158 Benchmark]: Boogie Preprocessor took 221.73ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 59.4MB in the beginning and 141.4MB in the end (delta: -82.0MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2023-11-21 22:21:51,601 INFO L158 Benchmark]: RCFGBuilder took 2189.89ms. Allocated memory is still 174.1MB. Free memory was 141.4MB in the beginning and 113.1MB in the end (delta: 28.3MB). Peak memory consumption was 69.4MB. Max. memory is 16.1GB. [2023-11-21 22:21:51,601 INFO L158 Benchmark]: TraceAbstraction took 22863.83ms. Allocated memory was 174.1MB in the beginning and 375.4MB in the end (delta: 201.3MB). Free memory was 112.1MB in the beginning and 258.2MB in the end (delta: -146.1MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2023-11-21 22:21:51,602 INFO L158 Benchmark]: Witness Printer took 316.86ms. Allocated memory is still 375.4MB. Free memory was 258.2MB in the beginning and 244.5MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 22:21:51,610 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 132.1MB. Free memory is still 107.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 844.17ms. Allocated memory is still 132.1MB. Free memory was 91.5MB in the beginning and 64.9MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.28ms. Allocated memory is still 132.1MB. Free memory was 64.9MB in the beginning and 59.4MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 221.73ms. Allocated memory was 132.1MB in the beginning and 174.1MB in the end (delta: 41.9MB). Free memory was 59.4MB in the beginning and 141.4MB in the end (delta: -82.0MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * RCFGBuilder took 2189.89ms. Allocated memory is still 174.1MB. Free memory was 141.4MB in the beginning and 113.1MB in the end (delta: 28.3MB). Peak memory consumption was 69.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22863.83ms. Allocated memory was 174.1MB in the beginning and 375.4MB in the end (delta: 201.3MB). Free memory was 112.1MB in the beginning and 258.2MB in the end (delta: -146.1MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * Witness Printer took 316.86ms. Allocated memory is still 375.4MB. Free memory was 258.2MB in the beginning and 244.5MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 449]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.8s, OverallIterations: 16, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1034 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1034 mSDsluCounter, 1341 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 109 mSDsCounter, 661 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4321 IncrementalHoareTripleChecker+Invalid, 4982 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 661 mSolverCounterUnsat, 1232 mSDtfsCounter, 4321 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 908 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2163occurred in iteration=7, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 16 MinimizatonAttempts, 1200 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 17 NumberOfFragments, 187 HoareAnnotationTreeSize, 1 FomulaSimplifications, 242 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 1 FomulaSimplificationsInter, 283 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 3236 NumberOfCodeBlocks, 3236 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 3216 ConstructedInterpolants, 0 QuantifiedInterpolants, 14879 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1502 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 2570/3053 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((((((((((9 <= a28) && (a25 == 1)) && (a11 == 1)) && (a17 <= 7)) && (a28 <= 10)) || (((((a17 == 8) && (7 == a28)) && (a11 == 1)) && !((a19 == 1))) && (a21 == 1))) || (((a17 <= 7) && (a28 == 10)) && !((a25 == 1)))) || ((((a17 == 8) && (a25 == 1)) && (a21 == 1)) && (a19 == 1))) || (((((a17 == 8) && (9 <= a28)) && (a21 == 1)) && (a28 <= 10)) && (a19 == 1))) || ((((((a17 == 8) && (a25 == a11)) && (a21 == 1)) && (a11 <= 0)) && (a19 == 1)) && (a28 <= 7))) || ((((a25 == 1) && (a17 <= 8)) && (a19 == 1)) && (a28 <= 7))) || (((a28 == 10) && (a17 <= 8)) && (a19 == 1))) || ((((a17 == 8) && (a21 == 1)) && (a28 <= 7)) && (a19 <= 0))) || (((((a17 == 8) && (a21 == 1)) && (a28 == 8)) && (a25 == 0)) && (a19 <= 0))) || ((((a25 == 1) && (a11 <= 0)) && (a19 == 1)) && (a28 <= 7))) || ((((a17 == 8) && (a25 == 1)) && (a28 == 10)) && (a21 == 1))) || (((((9 <= a28) && (a25 == 1)) && (a17 <= 8)) && (a28 <= 10)) && (a19 == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-21 22:21:51,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45510741-99aa-4a98-87f2-5c56a1b529b3/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE