./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem10_label21.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem10_label21.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd --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 d5ae1d248ac328ae194d38c847eaaf19b85e7124a7cd6c7e1aa145a759bc08e1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:49:55,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:49:55,621 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 12:49:55,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:49:55,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:49:55,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:49:55,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:49:55,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:49:55,668 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:49:55,669 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:49:55,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:49:55,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:49:55,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:49:55,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:49:55,669 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:49:55,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:49:55,670 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:49:55,670 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:49:55,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:49:55,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:49:55,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:49:55,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:49:55,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:49:55,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:49:55,671 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:49:55,671 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:49:55,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:49:55,671 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:49:55,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:49:55,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:49:55,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:49:55,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:49:55,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:49:55,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:49:55,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:49:55,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:49:55,673 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:49:55,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:49:55,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:49:55,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:49:55,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:49:55,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:49:55,674 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd 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 -> d5ae1d248ac328ae194d38c847eaaf19b85e7124a7cd6c7e1aa145a759bc08e1 [2024-11-13 12:49:56,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:49:56,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:49:56,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:49:56,028 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:49:56,029 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:49:56,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem10_label21.c Unable to find full path for "g++" [2024-11-13 12:49:57,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:49:58,398 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:49:58,402 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/sv-benchmarks/c/eca-rers2012/Problem10_label21.c [2024-11-13 12:49:58,417 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/data/1f191ce2a/00d6084589e64f969acb764db713f2b6/FLAG54561d3fe [2024-11-13 12:49:58,592 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/data/1f191ce2a/00d6084589e64f969acb764db713f2b6 [2024-11-13 12:49:58,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:49:58,601 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:49:58,602 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:49:58,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:49:58,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:49:58,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:49:58" (1/1) ... [2024-11-13 12:49:58,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cc33ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:58, skipping insertion in model container [2024-11-13 12:49:58,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:49:58" (1/1) ... [2024-11-13 12:49:58,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:49:58,886 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/sv-benchmarks/c/eca-rers2012/Problem10_label21.c[3267,3280] [2024-11-13 12:49:59,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:49:59,067 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:49:59,086 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/sv-benchmarks/c/eca-rers2012/Problem10_label21.c[3267,3280] [2024-11-13 12:49:59,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:49:59,182 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:49:59,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59 WrapperNode [2024-11-13 12:49:59,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:49:59,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:49:59,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:49:59,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:49:59,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,280 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 597 [2024-11-13 12:49:59,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:49:59,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:49:59,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:49:59,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:49:59,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,328 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 12:49:59,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:49:59,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:49:59,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:49:59,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:49:59,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (1/1) ... [2024-11-13 12:49:59,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:49:59,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:59,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:49:59,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:49:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:49:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:49:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:49:59,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:49:59,580 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:49:59,582 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:50:01,148 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-11-13 12:50:01,149 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:50:01,174 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:50:01,175 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 12:50:01,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:50:01 BoogieIcfgContainer [2024-11-13 12:50:01,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:50:01,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:50:01,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:50:01,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:50:01,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:49:58" (1/3) ... [2024-11-13 12:50:01,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8b03b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:50:01, skipping insertion in model container [2024-11-13 12:50:01,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:49:59" (2/3) ... [2024-11-13 12:50:01,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8b03b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:50:01, skipping insertion in model container [2024-11-13 12:50:01,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:50:01" (3/3) ... [2024-11-13 12:50:01,190 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2024-11-13 12:50:01,209 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:50:01,211 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem10_label21.c that has 1 procedures, 206 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 12:50:01,299 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:50:01,318 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1851915b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:50:01,319 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 12:50:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:01,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 12:50:01,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:01,337 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:01,338 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:01,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash -296635552, now seen corresponding path program 1 times [2024-11-13 12:50:01,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:01,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840646513] [2024-11-13 12:50:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:01,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:01,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:01,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840646513] [2024-11-13 12:50:01,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840646513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:01,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:01,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:50:01,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331651331] [2024-11-13 12:50:01,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:01,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:50:01,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:50:01,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:01,864 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:03,068 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2024-11-13 12:50:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:50:03,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-13 12:50:03,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:03,088 INFO L225 Difference]: With dead ends: 552 [2024-11-13 12:50:03,088 INFO L226 Difference]: Without dead ends: 282 [2024-11-13 12:50:03,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:03,100 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 161 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:03,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 76 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 12:50:03,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-13 12:50:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2024-11-13 12:50:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.5373665480427046) internal successors, (432), 281 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 432 transitions. [2024-11-13 12:50:03,174 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 432 transitions. Word has length 27 [2024-11-13 12:50:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:03,175 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 432 transitions. [2024-11-13 12:50:03,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:03,175 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 432 transitions. [2024-11-13 12:50:03,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-13 12:50:03,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:03,178 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:03,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:50:03,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:03,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash 635276217, now seen corresponding path program 1 times [2024-11-13 12:50:03,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:03,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633857764] [2024-11-13 12:50:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:03,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633857764] [2024-11-13 12:50:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633857764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:03,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:03,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:50:03,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26759798] [2024-11-13 12:50:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:03,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:50:03,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:03,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:50:03,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:03,907 INFO L87 Difference]: Start difference. First operand 282 states and 432 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:04,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:04,570 INFO L93 Difference]: Finished difference Result 701 states and 1076 transitions. [2024-11-13 12:50:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:50:04,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-11-13 12:50:04,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:04,574 INFO L225 Difference]: With dead ends: 701 [2024-11-13 12:50:04,574 INFO L226 Difference]: Without dead ends: 421 [2024-11-13 12:50:04,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:04,576 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:04,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 52 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 12:50:04,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-13 12:50:04,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2024-11-13 12:50:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.4428571428571428) internal successors, (606), 420 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:04,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 606 transitions. [2024-11-13 12:50:04,619 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 606 transitions. Word has length 96 [2024-11-13 12:50:04,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:04,619 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 606 transitions. [2024-11-13 12:50:04,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:04,620 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 606 transitions. [2024-11-13 12:50:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 12:50:04,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:04,624 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:04,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:50:04,624 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:04,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:04,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1225953144, now seen corresponding path program 1 times [2024-11-13 12:50:04,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:04,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085497942] [2024-11-13 12:50:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:04,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085497942] [2024-11-13 12:50:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085497942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:04,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:50:04,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594539216] [2024-11-13 12:50:04,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:04,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:50:04,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:04,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:50:04,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:04,867 INFO L87 Difference]: Start difference. First operand 421 states and 606 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:05,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:05,566 INFO L93 Difference]: Finished difference Result 1118 states and 1639 transitions. [2024-11-13 12:50:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:50:05,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2024-11-13 12:50:05,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:05,572 INFO L225 Difference]: With dead ends: 1118 [2024-11-13 12:50:05,572 INFO L226 Difference]: Without dead ends: 838 [2024-11-13 12:50:05,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:05,576 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 115 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:05,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 226 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 12:50:05,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-13 12:50:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 699. [2024-11-13 12:50:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.330945558739255) internal successors, (929), 698 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 929 transitions. [2024-11-13 12:50:05,614 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 929 transitions. Word has length 102 [2024-11-13 12:50:05,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:05,615 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 929 transitions. [2024-11-13 12:50:05,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 929 transitions. [2024-11-13 12:50:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-13 12:50:05,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:05,617 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:05,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 12:50:05,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:05,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:05,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1500464487, now seen corresponding path program 1 times [2024-11-13 12:50:05,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:05,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361210106] [2024-11-13 12:50:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:05,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:05,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361210106] [2024-11-13 12:50:05,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361210106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:05,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:05,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:50:05,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895754254] [2024-11-13 12:50:05,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:05,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:50:05,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:50:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:05,853 INFO L87 Difference]: Start difference. First operand 699 states and 929 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:06,486 INFO L93 Difference]: Finished difference Result 1396 states and 1962 transitions. [2024-11-13 12:50:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:50:06,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-11-13 12:50:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:06,490 INFO L225 Difference]: With dead ends: 1396 [2024-11-13 12:50:06,490 INFO L226 Difference]: Without dead ends: 838 [2024-11-13 12:50:06,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:06,492 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 52 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:06,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 76 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 12:50:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-13 12:50:06,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2024-11-13 12:50:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.2831541218637992) internal successors, (1074), 837 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1074 transitions. [2024-11-13 12:50:06,513 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1074 transitions. Word has length 121 [2024-11-13 12:50:06,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:06,513 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1074 transitions. [2024-11-13 12:50:06,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1074 transitions. [2024-11-13 12:50:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-13 12:50:06,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:06,517 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 12:50:06,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 12:50:06,517 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:06,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:06,518 INFO L85 PathProgramCache]: Analyzing trace with hash -661399834, now seen corresponding path program 1 times [2024-11-13 12:50:06,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:06,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270303027] [2024-11-13 12:50:06,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:06,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-13 12:50:06,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:06,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270303027] [2024-11-13 12:50:06,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270303027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:06,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:06,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:50:06,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852731548] [2024-11-13 12:50:06,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:06,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:50:06,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:06,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:50:06,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:06,750 INFO L87 Difference]: Start difference. First operand 838 states and 1074 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:07,304 INFO L93 Difference]: Finished difference Result 1813 states and 2330 transitions. [2024-11-13 12:50:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:50:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2024-11-13 12:50:07,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:07,309 INFO L225 Difference]: With dead ends: 1813 [2024-11-13 12:50:07,309 INFO L226 Difference]: Without dead ends: 1116 [2024-11-13 12:50:07,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:07,311 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 107 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:07,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 34 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 12:50:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2024-11-13 12:50:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1116. [2024-11-13 12:50:07,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.1766816143497758) internal successors, (1312), 1115 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:07,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1312 transitions. [2024-11-13 12:50:07,368 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1312 transitions. Word has length 162 [2024-11-13 12:50:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:07,368 INFO L471 AbstractCegarLoop]: Abstraction has 1116 states and 1312 transitions. [2024-11-13 12:50:07,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1312 transitions. [2024-11-13 12:50:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-13 12:50:07,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:07,373 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 12:50:07,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 12:50:07,373 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:07,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash 492595064, now seen corresponding path program 1 times [2024-11-13 12:50:07,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:07,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175785531] [2024-11-13 12:50:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:07,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:07,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175785531] [2024-11-13 12:50:07,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175785531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:07,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:07,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:50:07,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355702363] [2024-11-13 12:50:07,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:07,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:50:07,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:07,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:50:07,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:07,602 INFO L87 Difference]: Start difference. First operand 1116 states and 1312 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:08,182 INFO L93 Difference]: Finished difference Result 2369 states and 2857 transitions. [2024-11-13 12:50:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:50:08,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2024-11-13 12:50:08,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:08,192 INFO L225 Difference]: With dead ends: 2369 [2024-11-13 12:50:08,193 INFO L226 Difference]: Without dead ends: 1394 [2024-11-13 12:50:08,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:08,198 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 58 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:08,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 215 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 12:50:08,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2024-11-13 12:50:08,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1255. [2024-11-13 12:50:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.1650717703349283) internal successors, (1461), 1254 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1461 transitions. [2024-11-13 12:50:08,243 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1461 transitions. Word has length 179 [2024-11-13 12:50:08,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:08,243 INFO L471 AbstractCegarLoop]: Abstraction has 1255 states and 1461 transitions. [2024-11-13 12:50:08,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1461 transitions. [2024-11-13 12:50:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-13 12:50:08,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:08,251 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-13 12:50:08,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 12:50:08,251 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:08,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2016855537, now seen corresponding path program 1 times [2024-11-13 12:50:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:08,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94827835] [2024-11-13 12:50:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-13 12:50:08,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:08,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94827835] [2024-11-13 12:50:08,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94827835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:08,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:08,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:50:08,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127005535] [2024-11-13 12:50:08,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:08,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:50:08,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:50:08,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:08,497 INFO L87 Difference]: Start difference. First operand 1255 states and 1461 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:09,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:09,079 INFO L93 Difference]: Finished difference Result 1813 states and 2105 transitions. [2024-11-13 12:50:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:50:09,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 201 [2024-11-13 12:50:09,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:09,086 INFO L225 Difference]: With dead ends: 1813 [2024-11-13 12:50:09,086 INFO L226 Difference]: Without dead ends: 1811 [2024-11-13 12:50:09,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:09,088 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 157 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:09,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 11 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 12:50:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2024-11-13 12:50:09,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1255. [2024-11-13 12:50:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.1650717703349283) internal successors, (1461), 1254 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1461 transitions. [2024-11-13 12:50:09,124 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1461 transitions. Word has length 201 [2024-11-13 12:50:09,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:09,124 INFO L471 AbstractCegarLoop]: Abstraction has 1255 states and 1461 transitions. [2024-11-13 12:50:09,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:09,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1461 transitions. [2024-11-13 12:50:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-13 12:50:09,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:09,130 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:09,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 12:50:09,130 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:09,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:09,130 INFO L85 PathProgramCache]: Analyzing trace with hash 860482897, now seen corresponding path program 1 times [2024-11-13 12:50:09,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:09,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332132585] [2024-11-13 12:50:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:09,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 12:50:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332132585] [2024-11-13 12:50:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332132585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:09,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:09,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 12:50:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524044450] [2024-11-13 12:50:09,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:09,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 12:50:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:09,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 12:50:09,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:50:09,774 INFO L87 Difference]: Start difference. First operand 1255 states and 1461 transitions. Second operand has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:10,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:10,347 INFO L93 Difference]: Finished difference Result 2424 states and 2831 transitions. [2024-11-13 12:50:10,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 12:50:10,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 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 290 [2024-11-13 12:50:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:10,353 INFO L225 Difference]: With dead ends: 2424 [2024-11-13 12:50:10,353 INFO L226 Difference]: Without dead ends: 1255 [2024-11-13 12:50:10,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:50:10,355 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 142 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:10,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 20 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 12:50:10,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-13 12:50:10,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2024-11-13 12:50:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.1602870813397128) internal successors, (1455), 1254 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1455 transitions. [2024-11-13 12:50:10,403 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1455 transitions. Word has length 290 [2024-11-13 12:50:10,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:10,404 INFO L471 AbstractCegarLoop]: Abstraction has 1255 states and 1455 transitions. [2024-11-13 12:50:10,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.57142857142857) internal successors, (249), 6 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1455 transitions. [2024-11-13 12:50:10,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-13 12:50:10,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:10,410 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:10,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 12:50:10,410 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:10,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1344568107, now seen corresponding path program 1 times [2024-11-13 12:50:10,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:10,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012137190] [2024-11-13 12:50:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:10,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-13 12:50:11,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:11,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012137190] [2024-11-13 12:50:11,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012137190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:11,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:11,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:50:11,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418391789] [2024-11-13 12:50:11,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:11,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:50:11,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:50:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:11,114 INFO L87 Difference]: Start difference. First operand 1255 states and 1455 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:11,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:11,706 INFO L93 Difference]: Finished difference Result 2369 states and 2765 transitions. [2024-11-13 12:50:11,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:50:11,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 326 [2024-11-13 12:50:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:11,734 INFO L225 Difference]: With dead ends: 2369 [2024-11-13 12:50:11,735 INFO L226 Difference]: Without dead ends: 1255 [2024-11-13 12:50:11,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:11,736 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 137 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:11,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 159 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 12:50:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-13 12:50:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1116. [2024-11-13 12:50:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.1318385650224214) internal successors, (1262), 1115 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1262 transitions. [2024-11-13 12:50:11,768 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1262 transitions. Word has length 326 [2024-11-13 12:50:11,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:11,768 INFO L471 AbstractCegarLoop]: Abstraction has 1116 states and 1262 transitions. [2024-11-13 12:50:11,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:11,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1262 transitions. [2024-11-13 12:50:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-13 12:50:11,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:11,774 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-13 12:50:11,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 12:50:11,774 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:11,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:11,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1228778041, now seen corresponding path program 1 times [2024-11-13 12:50:11,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:11,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512580434] [2024-11-13 12:50:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:11,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-13 12:50:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:12,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512580434] [2024-11-13 12:50:12,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512580434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:12,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:12,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:50:12,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928349099] [2024-11-13 12:50:12,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:12,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:50:12,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:12,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:50:12,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:12,107 INFO L87 Difference]: Start difference. First operand 1116 states and 1262 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:12,735 INFO L93 Difference]: Finished difference Result 2786 states and 3188 transitions. [2024-11-13 12:50:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:50:12,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 328 [2024-11-13 12:50:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:12,742 INFO L225 Difference]: With dead ends: 2786 [2024-11-13 12:50:12,742 INFO L226 Difference]: Without dead ends: 1811 [2024-11-13 12:50:12,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:12,744 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:12,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 205 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 12:50:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2024-11-13 12:50:12,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1811. [2024-11-13 12:50:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 1.1171270718232045) internal successors, (2022), 1810 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2022 transitions. [2024-11-13 12:50:12,790 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2022 transitions. Word has length 328 [2024-11-13 12:50:12,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:12,790 INFO L471 AbstractCegarLoop]: Abstraction has 1811 states and 2022 transitions. [2024-11-13 12:50:12,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2022 transitions. [2024-11-13 12:50:12,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-13 12:50:12,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:12,798 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-13 12:50:12,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 12:50:12,798 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:12,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:12,799 INFO L85 PathProgramCache]: Analyzing trace with hash 442365204, now seen corresponding path program 1 times [2024-11-13 12:50:12,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:12,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732652984] [2024-11-13 12:50:12,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:12,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2024-11-13 12:50:13,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:13,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732652984] [2024-11-13 12:50:13,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732652984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:50:13,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:50:13,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:50:13,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408578287] [2024-11-13 12:50:13,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:50:13,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:50:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:50:13,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:13,167 INFO L87 Difference]: Start difference. First operand 1811 states and 2022 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:13,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:13,794 INFO L93 Difference]: Finished difference Result 3618 states and 4082 transitions. [2024-11-13 12:50:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:50:13,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 341 [2024-11-13 12:50:13,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:13,795 INFO L225 Difference]: With dead ends: 3618 [2024-11-13 12:50:13,796 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 12:50:13,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:50:13,799 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 115 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:13,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 222 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 12:50:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 12:50:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 12:50:13,800 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) [2024-11-13 12:50:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 12:50:13,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 341 [2024-11-13 12:50:13,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:13,800 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 12:50:13,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 12:50:13,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 12:50:13,805 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 12:50:13,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 12:50:13,808 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:50:13,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 12:50:14,099 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 12:50:14,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 12:50:14 BoogieIcfgContainer [2024-11-13 12:50:14,118 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 12:50:14,119 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 12:50:14,119 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 12:50:14,119 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 12:50:14,120 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:50:01" (3/4) ... [2024-11-13 12:50:14,122 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 12:50:14,143 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-13 12:50:14,145 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 12:50:14,145 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 12:50:14,146 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 12:50:14,293 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 12:50:14,294 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 12:50:14,294 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 12:50:14,295 INFO L158 Benchmark]: Toolchain (without parser) took 15694.31ms. Allocated memory was 117.4MB in the beginning and 293.6MB in the end (delta: 176.2MB). Free memory was 91.0MB in the beginning and 149.3MB in the end (delta: -58.2MB). Peak memory consumption was 118.2MB. Max. memory is 16.1GB. [2024-11-13 12:50:14,296 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 12:50:14,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.33ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 64.3MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 12:50:14,297 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.62ms. Allocated memory is still 117.4MB. Free memory was 64.3MB in the beginning and 56.5MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 12:50:14,297 INFO L158 Benchmark]: Boogie Preprocessor took 118.94ms. Allocated memory is still 117.4MB. Free memory was 56.5MB in the beginning and 47.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 12:50:14,297 INFO L158 Benchmark]: RCFGBuilder took 1769.31ms. Allocated memory is still 117.4MB. Free memory was 46.8MB in the beginning and 54.7MB in the end (delta: -7.8MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2024-11-13 12:50:14,298 INFO L158 Benchmark]: TraceAbstraction took 12938.99ms. Allocated memory was 117.4MB in the beginning and 293.6MB in the end (delta: 176.2MB). Free memory was 54.0MB in the beginning and 160.3MB in the end (delta: -106.3MB). Peak memory consumption was 74.0MB. Max. memory is 16.1GB. [2024-11-13 12:50:14,298 INFO L158 Benchmark]: Witness Printer took 175.22ms. Allocated memory is still 293.6MB. Free memory was 160.3MB in the beginning and 149.3MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 12:50:14,300 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.33ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 64.3MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.62ms. Allocated memory is still 117.4MB. Free memory was 64.3MB in the beginning and 56.5MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 118.94ms. Allocated memory is still 117.4MB. Free memory was 56.5MB in the beginning and 47.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1769.31ms. Allocated memory is still 117.4MB. Free memory was 46.8MB in the beginning and 54.7MB in the end (delta: -7.8MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * TraceAbstraction took 12938.99ms. Allocated memory was 117.4MB in the beginning and 293.6MB in the end (delta: 176.2MB). Free memory was 54.0MB in the beginning and 160.3MB in the end (delta: -106.3MB). Peak memory consumption was 74.0MB. Max. memory is 16.1GB. * Witness Printer took 175.22ms. Allocated memory is still 293.6MB. Free memory was 160.3MB in the beginning and 149.3MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. 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: 95]: 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, 206 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.5s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1138 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1138 mSDsluCounter, 1296 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 669 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4178 IncrementalHoareTripleChecker+Invalid, 4847 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 669 mSolverCounterUnsat, 1240 mSDtfsCounter, 4178 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1811occurred in iteration=10, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 973 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 2173 NumberOfCodeBlocks, 2173 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2162 ConstructedInterpolants, 0 QuantifiedInterpolants, 4777 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 1700/1700 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: 592]: Loop Invariant Derived loop invariant: (((((((a10 <= 0) && (8 <= a19)) && (14 == a4)) && (a12 == 0)) || ((((a19 <= 9) && (14 == a4)) && (a12 == 0)) && (a10 != 0))) || (((14 == a4) && (a12 == 0)) && (a19 == 6))) || (((a10 == 1) && (14 == a4)) && (a12 == 0))) RESULT: Ultimate proved your program to be correct! [2024-11-13 12:50:14,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51c41a-b067-4f20-8c03-f1d46a9adbde/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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