./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label48.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_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/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_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/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_717b3a2c-f29b-4c80-8704-76b30dbff365/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 0d929df4a838f03b0a70e3f4a24ac63ec6782a4f298757e5a2174a7cc8e9071c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:28:52,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:28:52,970 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:28:52,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:28:52,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:28:53,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:28:53,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:28:53,001 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:28:53,001 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:28:53,001 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:28:53,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:28:53,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:28:53,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:28:53,002 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:28:53,002 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:28:53,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:28:53,002 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:28:53,002 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:28:53,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:28:53,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:28:53,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:28:53,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:28:53,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:28:53,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:28:53,003 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:28:53,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:28:53,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:28:53,003 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:28:53,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:28:53,004 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:28:53,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:28:53,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:28:53,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:28:53,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:28:53,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:28:53,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:28:53,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:28:53,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:28:53,004 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:28:53,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:28:53,005 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:28:53,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:28:53,005 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_717b3a2c-f29b-4c80-8704-76b30dbff365/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 -> 0d929df4a838f03b0a70e3f4a24ac63ec6782a4f298757e5a2174a7cc8e9071c [2024-11-13 16:28:53,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:28:53,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:28:53,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:28:53,327 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:28:53,327 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:28:53,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem17_label48.c Unable to find full path for "g++" [2024-11-13 16:28:55,171 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:28:55,717 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:28:55,717 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/sv-benchmarks/c/eca-rers2012/Problem17_label48.c [2024-11-13 16:28:55,751 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/data/c5be83e67/c5512ba39c884c0e8b08ed65de0b7e09/FLAG4cd2ac7fa [2024-11-13 16:28:55,774 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/data/c5be83e67/c5512ba39c884c0e8b08ed65de0b7e09 [2024-11-13 16:28:55,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:28:55,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:28:55,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:28:55,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:28:55,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:28:55,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:28:55" (1/1) ... [2024-11-13 16:28:55,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c723e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:55, skipping insertion in model container [2024-11-13 16:28:55,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:28:55" (1/1) ... [2024-11-13 16:28:55,896 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:28:56,140 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_717b3a2c-f29b-4c80-8704-76b30dbff365/sv-benchmarks/c/eca-rers2012/Problem17_label48.c[6493,6506] [2024-11-13 16:28:56,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:28:56,842 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:28:56,864 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_717b3a2c-f29b-4c80-8704-76b30dbff365/sv-benchmarks/c/eca-rers2012/Problem17_label48.c[6493,6506] [2024-11-13 16:28:57,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:28:57,251 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:28:57,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57 WrapperNode [2024-11-13 16:28:57,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:28:57,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:28:57,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:28:57,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:28:57,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:57,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:57,662 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-13 16:28:57,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:28:57,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:28:57,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:28:57,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:28:57,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:57,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:57,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:57,949 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 16:28:57,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:57,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:58,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:58,179 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:58,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:58,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:58,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:28:58,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:28:58,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:28:58,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:28:58,327 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (1/1) ... [2024-11-13 16:28:58,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:28:58,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:28:58,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:28:58,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:28:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:28:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:28:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:28:58,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:28:58,521 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:28:58,523 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:29:03,347 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-13 16:29:03,348 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:29:03,382 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:29:03,386 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 16:29:03,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:29:03 BoogieIcfgContainer [2024-11-13 16:29:03,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:29:03,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:29:03,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:29:03,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:29:03,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:28:55" (1/3) ... [2024-11-13 16:29:03,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bfafb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:29:03, skipping insertion in model container [2024-11-13 16:29:03,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:28:57" (2/3) ... [2024-11-13 16:29:03,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bfafb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:29:03, skipping insertion in model container [2024-11-13 16:29:03,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:29:03" (3/3) ... [2024-11-13 16:29:03,402 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label48.c [2024-11-13 16:29:03,417 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:29:03,420 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem17_label48.c that has 1 procedures, 590 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 16:29:03,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:29:03,526 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;@a224136, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:29:03,527 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 16:29:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 16:29:03,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 16:29:03,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:03,544 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:03,545 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:03,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2011351648, now seen corresponding path program 1 times [2024-11-13 16:29:03,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:03,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323395110] [2024-11-13 16:29:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:03,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:03,983 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 16:29:03,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:03,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323395110] [2024-11-13 16:29:03,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323395110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:03,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:03,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:29:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492767970] [2024-11-13 16:29:03,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:03,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:03,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:04,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:04,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:04,022 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:29:07,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:07,398 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2024-11-13 16:29:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:07,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-13 16:29:07,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:07,416 INFO L225 Difference]: With dead ends: 1644 [2024-11-13 16:29:07,416 INFO L226 Difference]: Without dead ends: 977 [2024-11-13 16:29:07,422 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 16:29:07,425 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 445 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:07,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 504 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-13 16:29:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-13 16:29:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2024-11-13 16:29:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 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 16:29:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2024-11-13 16:29:07,532 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 43 [2024-11-13 16:29:07,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:07,532 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2024-11-13 16:29:07,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:29:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2024-11-13 16:29:07,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 16:29:07,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:07,535 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, 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] [2024-11-13 16:29:07,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:29:07,536 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:07,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:07,537 INFO L85 PathProgramCache]: Analyzing trace with hash 600361738, now seen corresponding path program 1 times [2024-11-13 16:29:07,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:07,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221193589] [2024-11-13 16:29:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:07,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:07,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:07,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221193589] [2024-11-13 16:29:07,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221193589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:07,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:07,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:29:07,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224186076] [2024-11-13 16:29:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:07,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:07,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:07,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:07,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:07,986 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 16:29:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:10,914 INFO L93 Difference]: Finished difference Result 2815 states and 4382 transitions. [2024-11-13 16:29:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:10,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-11-13 16:29:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:10,922 INFO L225 Difference]: With dead ends: 2815 [2024-11-13 16:29:10,922 INFO L226 Difference]: Without dead ends: 1846 [2024-11-13 16:29:10,924 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 16:29:10,925 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:10,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 580 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 16:29:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2024-11-13 16:29:10,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1841. [2024-11-13 16:29:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3505434782608696) internal successors, (2485), 1840 states have internal predecessors, (2485), 0 states have call successors, (0), 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 16:29:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2485 transitions. [2024-11-13 16:29:10,977 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2485 transitions. Word has length 110 [2024-11-13 16:29:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:10,977 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2485 transitions. [2024-11-13 16:29:10,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 16:29:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2485 transitions. [2024-11-13 16:29:10,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-13 16:29:10,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:10,981 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, 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] [2024-11-13 16:29:10,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:29:10,981 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:10,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1716425587, now seen corresponding path program 1 times [2024-11-13 16:29:10,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:10,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347560390] [2024-11-13 16:29:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:10,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:11,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:11,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347560390] [2024-11-13 16:29:11,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347560390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:11,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:11,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:11,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949089901] [2024-11-13 16:29:11,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:11,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:29:11,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:11,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:29:11,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:29:11,583 INFO L87 Difference]: Start difference. First operand 1841 states and 2485 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:29:16,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:16,268 INFO L93 Difference]: Finished difference Result 6767 states and 9263 transitions. [2024-11-13 16:29:16,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:29:16,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-13 16:29:16,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:16,287 INFO L225 Difference]: With dead ends: 6767 [2024-11-13 16:29:16,287 INFO L226 Difference]: Without dead ends: 4928 [2024-11-13 16:29:16,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:29:16,294 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 925 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:16,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 287 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 16:29:16,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2024-11-13 16:29:16,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4875. [2024-11-13 16:29:16,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 1.2870332375871973) internal successors, (6273), 4874 states have internal predecessors, (6273), 0 states have call successors, (0), 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 16:29:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6273 transitions. [2024-11-13 16:29:16,415 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6273 transitions. Word has length 113 [2024-11-13 16:29:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:16,416 INFO L471 AbstractCegarLoop]: Abstraction has 4875 states and 6273 transitions. [2024-11-13 16:29:16,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:29:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6273 transitions. [2024-11-13 16:29:16,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-13 16:29:16,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:16,420 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:16,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:29:16,420 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:16,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:16,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1794705220, now seen corresponding path program 1 times [2024-11-13 16:29:16,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:16,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736720238] [2024-11-13 16:29:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:16,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-13 16:29:16,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:16,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736720238] [2024-11-13 16:29:16,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736720238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:16,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:16,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:29:16,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195239781] [2024-11-13 16:29:16,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:16,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:16,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:16,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:16,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:16,774 INFO L87 Difference]: Start difference. First operand 4875 states and 6273 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 16:29:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:19,049 INFO L93 Difference]: Finished difference Result 14436 states and 18550 transitions. [2024-11-13 16:29:19,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:19,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 16:29:19,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:19,074 INFO L225 Difference]: With dead ends: 14436 [2024-11-13 16:29:19,074 INFO L226 Difference]: Without dead ends: 8277 [2024-11-13 16:29:19,081 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 16:29:19,082 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:19,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 16:29:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2024-11-13 16:29:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 6571. [2024-11-13 16:29:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6570 states have (on average 1.1796042617960427) internal successors, (7750), 6570 states have internal predecessors, (7750), 0 states have call successors, (0), 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 16:29:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 7750 transitions. [2024-11-13 16:29:19,289 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 7750 transitions. Word has length 179 [2024-11-13 16:29:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:19,290 INFO L471 AbstractCegarLoop]: Abstraction has 6571 states and 7750 transitions. [2024-11-13 16:29:19,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 16:29:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 7750 transitions. [2024-11-13 16:29:19,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-13 16:29:19,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:19,294 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:19,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:29:19,295 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:19,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1049806277, now seen corresponding path program 1 times [2024-11-13 16:29:19,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:19,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56278720] [2024-11-13 16:29:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:19,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:19,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:19,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56278720] [2024-11-13 16:29:19,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56278720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:19,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:19,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:19,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713126388] [2024-11-13 16:29:19,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:19,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:19,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:19,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:19,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:19,588 INFO L87 Difference]: Start difference. First operand 6571 states and 7750 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 16:29:21,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:21,966 INFO L93 Difference]: Finished difference Result 16550 states and 19925 transitions. [2024-11-13 16:29:21,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:21,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2024-11-13 16:29:21,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:21,990 INFO L225 Difference]: With dead ends: 16550 [2024-11-13 16:29:21,991 INFO L226 Difference]: Without dead ends: 9981 [2024-11-13 16:29:21,995 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 16:29:21,996 INFO L432 NwaCegarLoop]: 742 mSDtfsCounter, 499 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:21,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 800 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-13 16:29:22,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9981 states. [2024-11-13 16:29:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9981 to 9981. [2024-11-13 16:29:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9981 states, 9980 states have (on average 1.1698396793587174) internal successors, (11675), 9980 states have internal predecessors, (11675), 0 states have call successors, (0), 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 16:29:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9981 states to 9981 states and 11675 transitions. [2024-11-13 16:29:22,189 INFO L78 Accepts]: Start accepts. Automaton has 9981 states and 11675 transitions. Word has length 192 [2024-11-13 16:29:22,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:22,189 INFO L471 AbstractCegarLoop]: Abstraction has 9981 states and 11675 transitions. [2024-11-13 16:29:22,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 16:29:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 9981 states and 11675 transitions. [2024-11-13 16:29:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-13 16:29:22,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:22,193 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:22,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:29:22,193 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:22,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:22,194 INFO L85 PathProgramCache]: Analyzing trace with hash -417423294, now seen corresponding path program 1 times [2024-11-13 16:29:22,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:22,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609636531] [2024-11-13 16:29:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:22,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:22,570 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 16:29:22,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:22,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609636531] [2024-11-13 16:29:22,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609636531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:22,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:22,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:22,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372115802] [2024-11-13 16:29:22,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:22,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:22,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:22,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:22,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:22,572 INFO L87 Difference]: Start difference. First operand 9981 states and 11675 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 16:29:25,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:25,208 INFO L93 Difference]: Finished difference Result 24248 states and 28757 transitions. [2024-11-13 16:29:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 197 [2024-11-13 16:29:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:25,288 INFO L225 Difference]: With dead ends: 24248 [2024-11-13 16:29:25,288 INFO L226 Difference]: Without dead ends: 14269 [2024-11-13 16:29:25,291 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 16:29:25,292 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 477 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:25,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 444 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-13 16:29:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14269 states. [2024-11-13 16:29:25,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14269 to 13397. [2024-11-13 16:29:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13397 states, 13396 states have (on average 1.1923708569722304) internal successors, (15973), 13396 states have internal predecessors, (15973), 0 states have call successors, (0), 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 16:29:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 15973 transitions. [2024-11-13 16:29:25,586 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 15973 transitions. Word has length 197 [2024-11-13 16:29:25,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:25,587 INFO L471 AbstractCegarLoop]: Abstraction has 13397 states and 15973 transitions. [2024-11-13 16:29:25,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 16:29:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 15973 transitions. [2024-11-13 16:29:25,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-13 16:29:25,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:25,599 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:25,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:29:25,599 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:25,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:25,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1466704179, now seen corresponding path program 1 times [2024-11-13 16:29:25,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:25,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687830184] [2024-11-13 16:29:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:25,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 16:29:25,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687830184] [2024-11-13 16:29:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687830184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:25,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:25,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:25,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398303854] [2024-11-13 16:29:25,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:25,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:25,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:25,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:25,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:25,835 INFO L87 Difference]: Start difference. First operand 13397 states and 15973 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 16:29:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:28,798 INFO L93 Difference]: Finished difference Result 30624 states and 36860 transitions. [2024-11-13 16:29:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:28,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 242 [2024-11-13 16:29:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:28,837 INFO L225 Difference]: With dead ends: 30624 [2024-11-13 16:29:28,837 INFO L226 Difference]: Without dead ends: 17229 [2024-11-13 16:29:28,847 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 16:29:28,848 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 460 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:28,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 410 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1392 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 16:29:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17229 states. [2024-11-13 16:29:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17229 to 13379. [2024-11-13 16:29:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13379 states, 13378 states have (on average 1.190611451637016) internal successors, (15928), 13378 states have internal predecessors, (15928), 0 states have call successors, (0), 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 16:29:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13379 states to 13379 states and 15928 transitions. [2024-11-13 16:29:29,049 INFO L78 Accepts]: Start accepts. Automaton has 13379 states and 15928 transitions. Word has length 242 [2024-11-13 16:29:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:29,051 INFO L471 AbstractCegarLoop]: Abstraction has 13379 states and 15928 transitions. [2024-11-13 16:29:29,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 16:29:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 13379 states and 15928 transitions. [2024-11-13 16:29:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-13 16:29:29,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:29,058 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:29:29,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:29:29,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:29,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:29,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2057080530, now seen corresponding path program 1 times [2024-11-13 16:29:29,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:29,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062618393] [2024-11-13 16:29:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:29,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:29:29,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:29,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062618393] [2024-11-13 16:29:29,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062618393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:29,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:29,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:29,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208854224] [2024-11-13 16:29:29,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:29,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:29,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:29,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:29,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:29,472 INFO L87 Difference]: Start difference. First operand 13379 states and 15928 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:29:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:32,266 INFO L93 Difference]: Finished difference Result 30622 states and 36711 transitions. [2024-11-13 16:29:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:32,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2024-11-13 16:29:32,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:32,297 INFO L225 Difference]: With dead ends: 30622 [2024-11-13 16:29:32,297 INFO L226 Difference]: Without dead ends: 17245 [2024-11-13 16:29:32,306 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 16:29:32,307 INFO L432 NwaCegarLoop]: 813 mSDtfsCounter, 356 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:32,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 888 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 16:29:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17245 states. [2024-11-13 16:29:32,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17245 to 16812. [2024-11-13 16:29:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16812 states, 16811 states have (on average 1.1727440366426745) internal successors, (19715), 16811 states have internal predecessors, (19715), 0 states have call successors, (0), 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 16:29:32,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16812 states to 16812 states and 19715 transitions. [2024-11-13 16:29:32,497 INFO L78 Accepts]: Start accepts. Automaton has 16812 states and 19715 transitions. Word has length 259 [2024-11-13 16:29:32,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:32,498 INFO L471 AbstractCegarLoop]: Abstraction has 16812 states and 19715 transitions. [2024-11-13 16:29:32,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:29:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 16812 states and 19715 transitions. [2024-11-13 16:29:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-13 16:29:32,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:32,502 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:32,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:29:32,503 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:32,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:32,503 INFO L85 PathProgramCache]: Analyzing trace with hash 309324949, now seen corresponding path program 1 times [2024-11-13 16:29:32,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:32,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154073080] [2024-11-13 16:29:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:32,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 16:29:33,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:33,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154073080] [2024-11-13 16:29:33,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154073080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:29:33,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717116085] [2024-11-13 16:29:33,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:33,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:29:33,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:29:33,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:29:33,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:29:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:33,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:29:33,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:29:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 16:29:33,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:29:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-13 16:29:34,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717116085] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 16:29:34,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:29:34,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-13 16:29:34,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157969716] [2024-11-13 16:29:34,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:34,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:29:34,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:34,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:29:34,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:29:34,053 INFO L87 Difference]: Start difference. First operand 16812 states and 19715 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 16:29:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:38,362 INFO L93 Difference]: Finished difference Result 47275 states and 56056 transitions. [2024-11-13 16:29:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:29:38,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 267 [2024-11-13 16:29:38,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:38,411 INFO L225 Difference]: With dead ends: 47275 [2024-11-13 16:29:38,412 INFO L226 Difference]: Without dead ends: 28306 [2024-11-13 16:29:38,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:29:38,428 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 1062 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 1224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1224 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:38,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 150 Invalid, 3490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1224 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 16:29:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28306 states. [2024-11-13 16:29:38,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28306 to 27875. [2024-11-13 16:29:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27875 states, 27874 states have (on average 1.1424625098658248) internal successors, (31845), 27874 states have internal predecessors, (31845), 0 states have call successors, (0), 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 16:29:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27875 states to 27875 states and 31845 transitions. [2024-11-13 16:29:38,821 INFO L78 Accepts]: Start accepts. Automaton has 27875 states and 31845 transitions. Word has length 267 [2024-11-13 16:29:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:38,821 INFO L471 AbstractCegarLoop]: Abstraction has 27875 states and 31845 transitions. [2024-11-13 16:29:38,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 16:29:38,822 INFO L276 IsEmpty]: Start isEmpty. Operand 27875 states and 31845 transitions. [2024-11-13 16:29:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-13 16:29:38,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:38,830 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:38,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:29:39,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 16:29:39,035 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:39,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash 26588271, now seen corresponding path program 1 times [2024-11-13 16:29:39,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:39,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195326390] [2024-11-13 16:29:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:39,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-13 16:29:39,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:39,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195326390] [2024-11-13 16:29:39,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195326390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:39,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:39,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:39,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491294602] [2024-11-13 16:29:39,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:39,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:39,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:39,394 INFO L87 Difference]: Start difference. First operand 27875 states and 31845 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 16:29:41,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:41,595 INFO L93 Difference]: Finished difference Result 64690 states and 73399 transitions. [2024-11-13 16:29:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:41,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 361 [2024-11-13 16:29:41,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:41,626 INFO L225 Difference]: With dead ends: 64690 [2024-11-13 16:29:41,626 INFO L226 Difference]: Without dead ends: 36817 [2024-11-13 16:29:41,644 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 16:29:41,644 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 485 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:41,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 283 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 16:29:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36817 states. [2024-11-13 16:29:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36817 to 36367. [2024-11-13 16:29:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36367 states, 36366 states have (on average 1.122422042567233) internal successors, (40818), 36366 states have internal predecessors, (40818), 0 states have call successors, (0), 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 16:29:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36367 states to 36367 states and 40818 transitions. [2024-11-13 16:29:42,151 INFO L78 Accepts]: Start accepts. Automaton has 36367 states and 40818 transitions. Word has length 361 [2024-11-13 16:29:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:42,151 INFO L471 AbstractCegarLoop]: Abstraction has 36367 states and 40818 transitions. [2024-11-13 16:29:42,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 16:29:42,152 INFO L276 IsEmpty]: Start isEmpty. Operand 36367 states and 40818 transitions. [2024-11-13 16:29:42,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-13 16:29:42,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:42,163 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:29:42,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 16:29:42,164 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:42,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2075472960, now seen corresponding path program 1 times [2024-11-13 16:29:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:42,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586635519] [2024-11-13 16:29:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:42,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-13 16:29:42,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:42,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586635519] [2024-11-13 16:29:42,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586635519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:42,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:42,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:42,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361670325] [2024-11-13 16:29:42,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:42,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:42,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:42,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:42,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:42,672 INFO L87 Difference]: Start difference. First operand 36367 states and 40818 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 16:29:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:44,736 INFO L93 Difference]: Finished difference Result 79526 states and 89552 transitions. [2024-11-13 16:29:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:44,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 382 [2024-11-13 16:29:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:44,770 INFO L225 Difference]: With dead ends: 79526 [2024-11-13 16:29:44,770 INFO L226 Difference]: Without dead ends: 43161 [2024-11-13 16:29:44,790 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 16:29:44,791 INFO L432 NwaCegarLoop]: 731 mSDtfsCounter, 272 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:44,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 793 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 16:29:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43161 states. [2024-11-13 16:29:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43161 to 43161. [2024-11-13 16:29:45,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43161 states, 43160 states have (on average 1.1083178869323447) internal successors, (47835), 43160 states have internal predecessors, (47835), 0 states have call successors, (0), 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 16:29:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43161 states to 43161 states and 47835 transitions. [2024-11-13 16:29:45,426 INFO L78 Accepts]: Start accepts. Automaton has 43161 states and 47835 transitions. Word has length 382 [2024-11-13 16:29:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:45,427 INFO L471 AbstractCegarLoop]: Abstraction has 43161 states and 47835 transitions. [2024-11-13 16:29:45,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 16:29:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 43161 states and 47835 transitions. [2024-11-13 16:29:45,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-13 16:29:45,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:45,435 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, 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, 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, 1] [2024-11-13 16:29:45,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 16:29:45,436 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:45,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:45,436 INFO L85 PathProgramCache]: Analyzing trace with hash -418838124, now seen corresponding path program 1 times [2024-11-13 16:29:45,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:45,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084555690] [2024-11-13 16:29:45,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:45,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 16:29:46,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:46,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084555690] [2024-11-13 16:29:46,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084555690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:46,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:46,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:46,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027609407] [2024-11-13 16:29:46,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:46,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:46,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:46,153 INFO L87 Difference]: Start difference. First operand 43161 states and 47835 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:29:48,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:48,314 INFO L93 Difference]: Finished difference Result 98273 states and 108802 transitions. [2024-11-13 16:29:48,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:48,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2024-11-13 16:29:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:48,356 INFO L225 Difference]: With dead ends: 98273 [2024-11-13 16:29:48,356 INFO L226 Difference]: Without dead ends: 55114 [2024-11-13 16:29:48,373 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 16:29:48,374 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 336 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:48,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 635 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 16:29:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55114 states. [2024-11-13 16:29:48,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55114 to 52106. [2024-11-13 16:29:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52106 states, 52105 states have (on average 1.1077055944726995) internal successors, (57717), 52105 states have internal predecessors, (57717), 0 states have call successors, (0), 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 16:29:48,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52106 states to 52106 states and 57717 transitions. [2024-11-13 16:29:48,935 INFO L78 Accepts]: Start accepts. Automaton has 52106 states and 57717 transitions. Word has length 405 [2024-11-13 16:29:48,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:48,936 INFO L471 AbstractCegarLoop]: Abstraction has 52106 states and 57717 transitions. [2024-11-13 16:29:48,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:29:48,936 INFO L276 IsEmpty]: Start isEmpty. Operand 52106 states and 57717 transitions. [2024-11-13 16:29:48,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-13 16:29:48,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:48,946 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, 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, 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, 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] [2024-11-13 16:29:48,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 16:29:48,946 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:48,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:48,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1994717071, now seen corresponding path program 1 times [2024-11-13 16:29:48,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:48,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285908173] [2024-11-13 16:29:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:48,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 16:29:49,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:49,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285908173] [2024-11-13 16:29:49,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285908173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:49,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:49,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:29:49,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815454335] [2024-11-13 16:29:49,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:49,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:29:49,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:49,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:29:49,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:29:49,804 INFO L87 Difference]: Start difference. First operand 52106 states and 57717 transitions. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 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 16:29:53,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:53,921 INFO L93 Difference]: Finished difference Result 130213 states and 143849 transitions. [2024-11-13 16:29:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:29:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 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 448 [2024-11-13 16:29:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:54,141 INFO L225 Difference]: With dead ends: 130213 [2024-11-13 16:29:54,141 INFO L226 Difference]: Without dead ends: 77684 [2024-11-13 16:29:54,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:29:54,160 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 780 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:54,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 161 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-13 16:29:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77684 states. [2024-11-13 16:29:54,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77684 to 69116. [2024-11-13 16:29:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69116 states, 69115 states have (on average 1.1004991680532445) internal successors, (76061), 69115 states have internal predecessors, (76061), 0 states have call successors, (0), 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 16:29:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69116 states to 69116 states and 76061 transitions. [2024-11-13 16:29:54,960 INFO L78 Accepts]: Start accepts. Automaton has 69116 states and 76061 transitions. Word has length 448 [2024-11-13 16:29:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:54,961 INFO L471 AbstractCegarLoop]: Abstraction has 69116 states and 76061 transitions. [2024-11-13 16:29:54,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 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 16:29:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 69116 states and 76061 transitions. [2024-11-13 16:29:54,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-11-13 16:29:54,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:54,972 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:29:54,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 16:29:54,972 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:54,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash -915265096, now seen corresponding path program 1 times [2024-11-13 16:29:54,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:54,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287698178] [2024-11-13 16:29:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:29:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-13 16:29:55,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:29:55,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287698178] [2024-11-13 16:29:55,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287698178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:29:55,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:29:55,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:29:55,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906335614] [2024-11-13 16:29:55,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:29:55,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:29:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:29:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:29:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:29:55,856 INFO L87 Difference]: Start difference. First operand 69116 states and 76061 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 16:29:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:29:58,160 INFO L93 Difference]: Finished difference Result 153595 states and 169224 transitions. [2024-11-13 16:29:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:29:58,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 455 [2024-11-13 16:29:58,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:29:58,238 INFO L225 Difference]: With dead ends: 153595 [2024-11-13 16:29:58,238 INFO L226 Difference]: Without dead ends: 84056 [2024-11-13 16:29:58,271 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 16:29:58,271 INFO L432 NwaCegarLoop]: 649 mSDtfsCounter, 446 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:29:58,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 701 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 16:29:58,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84056 states. [2024-11-13 16:29:59,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84056 to 82333. [2024-11-13 16:29:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82333 states, 82332 states have (on average 1.1011149978137298) internal successors, (90657), 82332 states have internal predecessors, (90657), 0 states have call successors, (0), 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 16:29:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82333 states to 82333 states and 90657 transitions. [2024-11-13 16:29:59,383 INFO L78 Accepts]: Start accepts. Automaton has 82333 states and 90657 transitions. Word has length 455 [2024-11-13 16:29:59,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:29:59,383 INFO L471 AbstractCegarLoop]: Abstraction has 82333 states and 90657 transitions. [2024-11-13 16:29:59,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 16:29:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 82333 states and 90657 transitions. [2024-11-13 16:29:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-13 16:29:59,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:29:59,394 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 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] [2024-11-13 16:29:59,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 16:29:59,395 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:29:59,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:29:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1202878245, now seen corresponding path program 1 times [2024-11-13 16:29:59,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:29:59,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80605127] [2024-11-13 16:29:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:29:59,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:29:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-13 16:30:00,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80605127] [2024-11-13 16:30:00,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80605127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:00,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:00,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:30:00,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373028215] [2024-11-13 16:30:00,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:00,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:30:00,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:00,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:30:00,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:30:00,040 INFO L87 Difference]: Start difference. First operand 82333 states and 90657 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 16:30:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:30:01,367 INFO L93 Difference]: Finished difference Result 162524 states and 178775 transitions. [2024-11-13 16:30:01,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:30:01,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 469 [2024-11-13 16:30:01,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:30:01,427 INFO L225 Difference]: With dead ends: 162524 [2024-11-13 16:30:01,427 INFO L226 Difference]: Without dead ends: 80193 [2024-11-13 16:30:01,455 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 16:30:01,456 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 622 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:30:01,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 103 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:30:01,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80193 states. [2024-11-13 16:30:02,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80193 to 80178. [2024-11-13 16:30:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80178 states, 80177 states have (on average 1.0985569427641344) internal successors, (88079), 80177 states have internal predecessors, (88079), 0 states have call successors, (0), 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 16:30:02,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80178 states to 80178 states and 88079 transitions. [2024-11-13 16:30:02,480 INFO L78 Accepts]: Start accepts. Automaton has 80178 states and 88079 transitions. Word has length 469 [2024-11-13 16:30:02,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:30:02,480 INFO L471 AbstractCegarLoop]: Abstraction has 80178 states and 88079 transitions. [2024-11-13 16:30:02,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 16:30:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 80178 states and 88079 transitions. [2024-11-13 16:30:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-13 16:30:02,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:30:02,492 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:30:02,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 16:30:02,492 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:30:02,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1400748654, now seen corresponding path program 1 times [2024-11-13 16:30:02,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:02,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812575183] [2024-11-13 16:30:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:02,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-13 16:30:03,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:03,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812575183] [2024-11-13 16:30:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812575183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:03,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:03,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:30:03,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142836051] [2024-11-13 16:30:03,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:03,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:03,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:03,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:03,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:03,617 INFO L87 Difference]: Start difference. First operand 80178 states and 88079 transitions. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 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 16:30:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:30:07,318 INFO L93 Difference]: Finished difference Result 189350 states and 207625 transitions. [2024-11-13 16:30:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:07,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 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 487 [2024-11-13 16:30:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:30:07,398 INFO L225 Difference]: With dead ends: 189350 [2024-11-13 16:30:07,398 INFO L226 Difference]: Without dead ends: 104916 [2024-11-13 16:30:07,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:07,430 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 746 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:30:07,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 220 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-13 16:30:07,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104916 states. [2024-11-13 16:30:08,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104916 to 100611. [2024-11-13 16:30:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100611 states, 100610 states have (on average 1.0951197694066197) internal successors, (110180), 100610 states have internal predecessors, (110180), 0 states have call successors, (0), 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 16:30:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100611 states to 100611 states and 110180 transitions. [2024-11-13 16:30:08,645 INFO L78 Accepts]: Start accepts. Automaton has 100611 states and 110180 transitions. Word has length 487 [2024-11-13 16:30:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:30:08,646 INFO L471 AbstractCegarLoop]: Abstraction has 100611 states and 110180 transitions. [2024-11-13 16:30:08,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 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 16:30:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 100611 states and 110180 transitions. [2024-11-13 16:30:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-13 16:30:08,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:30:08,654 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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 16:30:08,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 16:30:08,654 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:30:08,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:08,654 INFO L85 PathProgramCache]: Analyzing trace with hash 501165127, now seen corresponding path program 1 times [2024-11-13 16:30:08,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:08,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710152627] [2024-11-13 16:30:08,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:08,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2024-11-13 16:30:09,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:09,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710152627] [2024-11-13 16:30:09,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710152627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:09,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:09,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:30:09,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541021088] [2024-11-13 16:30:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:09,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:30:09,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:09,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:30:09,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:30:09,237 INFO L87 Difference]: Start difference. First operand 100611 states and 110180 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 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 16:30:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:30:11,723 INFO L93 Difference]: Finished difference Result 213971 states and 234379 transitions. [2024-11-13 16:30:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:30:11,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 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 492 [2024-11-13 16:30:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:30:11,841 INFO L225 Difference]: With dead ends: 213971 [2024-11-13 16:30:11,841 INFO L226 Difference]: Without dead ends: 113362 [2024-11-13 16:30:11,887 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 16:30:11,888 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 399 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:30:11,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 320 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 16:30:12,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113362 states. [2024-11-13 16:30:13,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113362 to 110800. [2024-11-13 16:30:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110800 states, 110799 states have (on average 1.0898564066462693) internal successors, (120755), 110799 states have internal predecessors, (120755), 0 states have call successors, (0), 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 16:30:13,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110800 states to 110800 states and 120755 transitions. [2024-11-13 16:30:13,287 INFO L78 Accepts]: Start accepts. Automaton has 110800 states and 120755 transitions. Word has length 492 [2024-11-13 16:30:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:30:13,288 INFO L471 AbstractCegarLoop]: Abstraction has 110800 states and 120755 transitions. [2024-11-13 16:30:13,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 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 16:30:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 110800 states and 120755 transitions. [2024-11-13 16:30:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-13 16:30:13,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:30:13,298 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:30:13,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 16:30:13,298 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:30:13,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1597257392, now seen corresponding path program 1 times [2024-11-13 16:30:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:13,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191171526] [2024-11-13 16:30:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2024-11-13 16:30:14,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:14,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191171526] [2024-11-13 16:30:14,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191171526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:14,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:14,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:30:14,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027702952] [2024-11-13 16:30:14,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:14,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:14,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:14,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:14,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:14,203 INFO L87 Difference]: Start difference. First operand 110800 states and 120755 transitions. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 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 16:30:17,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:30:17,527 INFO L93 Difference]: Finished difference Result 232233 states and 253625 transitions. [2024-11-13 16:30:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:17,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 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 503 [2024-11-13 16:30:17,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:30:17,639 INFO L225 Difference]: With dead ends: 232233 [2024-11-13 16:30:17,639 INFO L226 Difference]: Without dead ends: 121010 [2024-11-13 16:30:17,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:17,678 INFO L432 NwaCegarLoop]: 684 mSDtfsCounter, 827 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:30:17,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 748 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 16:30:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121010 states. [2024-11-13 16:30:18,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121010 to 106945. [2024-11-13 16:30:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106945 states, 106944 states have (on average 1.0883640035906643) internal successors, (116394), 106944 states have internal predecessors, (116394), 0 states have call successors, (0), 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 16:30:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106945 states to 106945 states and 116394 transitions. [2024-11-13 16:30:19,021 INFO L78 Accepts]: Start accepts. Automaton has 106945 states and 116394 transitions. Word has length 503 [2024-11-13 16:30:19,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:30:19,021 INFO L471 AbstractCegarLoop]: Abstraction has 106945 states and 116394 transitions. [2024-11-13 16:30:19,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 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 16:30:19,022 INFO L276 IsEmpty]: Start isEmpty. Operand 106945 states and 116394 transitions. [2024-11-13 16:30:19,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-13 16:30:19,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:30:19,038 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:30:19,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 16:30:19,038 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:30:19,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:19,039 INFO L85 PathProgramCache]: Analyzing trace with hash -816846561, now seen corresponding path program 1 times [2024-11-13 16:30:19,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:19,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310563295] [2024-11-13 16:30:19,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:19,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 427 proven. 41 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-13 16:30:20,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:20,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310563295] [2024-11-13 16:30:20,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310563295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:30:20,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645909528] [2024-11-13 16:30:20,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:20,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:20,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:30:20,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:30:20,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:30:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:20,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:30:20,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:30:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 455 proven. 82 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-13 16:30:21,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:30:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 455 proven. 82 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-13 16:30:22,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645909528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:30:22,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:30:22,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-13 16:30:22,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257159614] [2024-11-13 16:30:22,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:30:22,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 16:30:22,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:22,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 16:30:22,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:30:22,326 INFO L87 Difference]: Start difference. First operand 106945 states and 116394 transitions. Second operand has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 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 16:30:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:30:33,312 INFO L93 Difference]: Finished difference Result 249664 states and 271344 transitions. [2024-11-13 16:30:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:30:33,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 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 532 [2024-11-13 16:30:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:30:33,441 INFO L225 Difference]: With dead ends: 249664 [2024-11-13 16:30:33,441 INFO L226 Difference]: Without dead ends: 138029 [2024-11-13 16:30:33,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1084 GetRequests, 1068 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:30:33,496 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 7341 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 8283 mSolverCounterSat, 1793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7341 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 10076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1793 IncrementalHoareTripleChecker+Valid, 8283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:30:33,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7341 Valid, 260 Invalid, 10076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1793 Valid, 8283 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2024-11-13 16:30:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138029 states. [2024-11-13 16:30:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138029 to 122213. [2024-11-13 16:30:35,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122213 states, 122212 states have (on average 1.0703367918044056) internal successors, (130808), 122212 states have internal predecessors, (130808), 0 states have call successors, (0), 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 16:30:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122213 states to 122213 states and 130808 transitions. [2024-11-13 16:30:35,293 INFO L78 Accepts]: Start accepts. Automaton has 122213 states and 130808 transitions. Word has length 532 [2024-11-13 16:30:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:30:35,293 INFO L471 AbstractCegarLoop]: Abstraction has 122213 states and 130808 transitions. [2024-11-13 16:30:35,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 101.11111111111111) internal successors, (910), 9 states have internal predecessors, (910), 0 states have call successors, (0), 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 16:30:35,294 INFO L276 IsEmpty]: Start isEmpty. Operand 122213 states and 130808 transitions. [2024-11-13 16:30:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2024-11-13 16:30:35,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:30:35,306 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2024-11-13 16:30:35,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:30:35,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717b3a2c-f29b-4c80-8704-76b30dbff365/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:30:35,507 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:30:35,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:35,507 INFO L85 PathProgramCache]: Analyzing trace with hash 718319580, now seen corresponding path program 1 times [2024-11-13 16:30:35,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:35,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332952009] [2024-11-13 16:30:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:35,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-13 16:30:36,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:36,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332952009] [2024-11-13 16:30:36,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332952009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:36,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:36,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:30:36,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815965315] [2024-11-13 16:30:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:36,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:30:36,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:36,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:30:36,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:36,721 INFO L87 Difference]: Start difference. First operand 122213 states and 130808 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 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 16:30:40,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:30:40,671 INFO L93 Difference]: Finished difference Result 264462 states and 282527 transitions. [2024-11-13 16:30:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:30:40,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 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 567 [2024-11-13 16:30:40,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:30:40,807 INFO L225 Difference]: With dead ends: 264462 [2024-11-13 16:30:40,807 INFO L226 Difference]: Without dead ends: 141825 [2024-11-13 16:30:40,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:30:40,862 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 741 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:30:40,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 155 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-13 16:30:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141825 states. [2024-11-13 16:30:42,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141825 to 131153. [2024-11-13 16:30:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131153 states, 131152 states have (on average 1.0690496523118214) internal successors, (140208), 131152 states have internal predecessors, (140208), 0 states have call successors, (0), 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 16:30:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131153 states to 131153 states and 140208 transitions. [2024-11-13 16:30:42,783 INFO L78 Accepts]: Start accepts. Automaton has 131153 states and 140208 transitions. Word has length 567 [2024-11-13 16:30:42,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:30:42,783 INFO L471 AbstractCegarLoop]: Abstraction has 131153 states and 140208 transitions. [2024-11-13 16:30:42,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 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 16:30:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 131153 states and 140208 transitions. [2024-11-13 16:30:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2024-11-13 16:30:42,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:30:42,804 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, 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, 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:30:42,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 16:30:42,804 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:30:42,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:42,804 INFO L85 PathProgramCache]: Analyzing trace with hash -193245129, now seen corresponding path program 1 times [2024-11-13 16:30:42,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:42,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987216898] [2024-11-13 16:30:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:42,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:30:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 16:30:43,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:30:43,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987216898] [2024-11-13 16:30:43,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987216898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:30:43,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:30:43,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:30:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061427053] [2024-11-13 16:30:43,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:30:43,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:30:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:30:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:30:43,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:30:43,318 INFO L87 Difference]: Start difference. First operand 131153 states and 140208 transitions. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 16:30:45,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:30:45,763 INFO L93 Difference]: Finished difference Result 261430 states and 279201 transitions. [2024-11-13 16:30:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:30:45,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 614 [2024-11-13 16:30:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:30:45,868 INFO L225 Difference]: With dead ends: 261430 [2024-11-13 16:30:45,868 INFO L226 Difference]: Without dead ends: 131129 [2024-11-13 16:30:45,914 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 16:30:45,914 INFO L432 NwaCegarLoop]: 626 mSDtfsCounter, 286 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:30:45,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 660 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 16:30:45,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131129 states. [2024-11-13 16:30:47,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131129 to 129427. [2024-11-13 16:30:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129427 states, 129426 states have (on average 1.061834561834562) internal successors, (137429), 129426 states have internal predecessors, (137429), 0 states have call successors, (0), 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 16:30:47,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129427 states to 129427 states and 137429 transitions. [2024-11-13 16:30:47,857 INFO L78 Accepts]: Start accepts. Automaton has 129427 states and 137429 transitions. Word has length 614 [2024-11-13 16:30:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:30:47,857 INFO L471 AbstractCegarLoop]: Abstraction has 129427 states and 137429 transitions. [2024-11-13 16:30:47,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 16:30:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 129427 states and 137429 transitions. [2024-11-13 16:30:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2024-11-13 16:30:47,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:30:47,891 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:30:47,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 16:30:47,892 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:30:47,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:30:47,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1211183408, now seen corresponding path program 1 times [2024-11-13 16:30:47,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:30:47,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721671461] [2024-11-13 16:30:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:30:47,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:30:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat