./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label52.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_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/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_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/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_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/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 ddbc486d8837447489a9f02b29f9b0c86837a784a73349e3a6819c320282b326 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:29:03,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:29:03,074 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:29:03,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:29:03,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:29:03,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:29:03,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:29:03,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:29:03,107 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:29:03,108 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:29:03,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:29:03,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:29:03,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:29:03,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:29:03,112 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:29:03,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:29:03,112 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:29:03,112 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:29:03,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:29:03,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:29:03,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:29:03,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:29:03,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:29:03,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:29:03,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:29:03,113 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:29:03,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:29:03,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:29:03,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:29:03,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:29:03,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:29:03,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:29:03,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:29:03,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:29:03,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:29:03,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:29:03,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:29:03,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:29:03,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:29:03,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:29:03,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:29:03,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:29:03,117 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_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/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 -> ddbc486d8837447489a9f02b29f9b0c86837a784a73349e3a6819c320282b326 [2024-11-13 15:29:03,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:29:03,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:29:03,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:29:03,491 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:29:03,491 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:29:03,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem12_label52.c Unable to find full path for "g++" [2024-11-13 15:29:05,532 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:29:06,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:29:06,115 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/sv-benchmarks/c/eca-rers2012/Problem12_label52.c [2024-11-13 15:29:06,164 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/data/27ead1c4e/ad123c0747884c999a9ad58f1054440d/FLAG073619680 [2024-11-13 15:29:06,187 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/data/27ead1c4e/ad123c0747884c999a9ad58f1054440d [2024-11-13 15:29:06,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:29:06,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:29:06,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:29:06,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:29:06,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:29:06,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:29:06" (1/1) ... [2024-11-13 15:29:06,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35c7d421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:06, skipping insertion in model container [2024-11-13 15:29:06,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:29:06" (1/1) ... [2024-11-13 15:29:06,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:29:06,622 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_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/sv-benchmarks/c/eca-rers2012/Problem12_label52.c[3994,4007] [2024-11-13 15:29:07,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:29:07,510 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:29:07,540 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_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/sv-benchmarks/c/eca-rers2012/Problem12_label52.c[3994,4007] [2024-11-13 15:29:08,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:29:08,112 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:29:08,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08 WrapperNode [2024-11-13 15:29:08,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:29:08,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:29:08,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:29:08,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:29:08,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:08,187 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:08,550 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-13 15:29:08,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:29:08,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:29:08,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:29:08,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:29:08,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:08,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:08,605 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:08,839 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 15:29:08,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:08,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:08,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:09,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:09,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:09,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:09,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:29:09,212 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:29:09,212 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:29:09,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:29:09,213 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (1/1) ... [2024-11-13 15:29:09,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:29:09,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:09,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:29:09,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:29:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:29:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:29:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:29:09,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:29:09,552 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:29:09,554 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:29:16,267 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-13 15:29:16,267 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:29:16,314 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:29:16,318 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:29:16,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:29:16 BoogieIcfgContainer [2024-11-13 15:29:16,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:29:16,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:29:16,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:29:16,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:29:16,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:29:06" (1/3) ... [2024-11-13 15:29:16,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d3e97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:29:16, skipping insertion in model container [2024-11-13 15:29:16,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:29:08" (2/3) ... [2024-11-13 15:29:16,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d3e97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:29:16, skipping insertion in model container [2024-11-13 15:29:16,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:29:16" (3/3) ... [2024-11-13 15:29:16,331 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label52.c [2024-11-13 15:29:16,350 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:29:16,352 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem12_label52.c that has 1 procedures, 818 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 15:29:16,459 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:29:16,474 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;@2ae8736f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:29:16,474 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:29:16,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states 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 15:29:16,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 15:29:16,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:16,492 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] [2024-11-13 15:29:16,493 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:29:16,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:16,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1977162218, now seen corresponding path program 1 times [2024-11-13 15:29:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:29:16,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358237783] [2024-11-13 15:29:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:16,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:29:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:16,938 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 15:29:16,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:29:16,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358237783] [2024-11-13 15:29:16,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358237783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:16,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:16,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:29:16,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149833448] [2024-11-13 15:29:16,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:16,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:29:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:29:16,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:29:16,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:29:16,975 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 15:29:22,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:22,156 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-13 15:29:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:29:22,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-11-13 15:29:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:22,193 INFO L225 Difference]: With dead ends: 2388 [2024-11-13 15:29:22,195 INFO L226 Difference]: Without dead ends: 1506 [2024-11-13 15:29:22,206 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 15:29:22,211 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 829 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:22,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-13 15:29:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-13 15:29:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-13 15:29:22,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states 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 15:29:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2024-11-13 15:29:22,375 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 30 [2024-11-13 15:29:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:22,376 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2024-11-13 15:29:22,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 15:29:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2024-11-13 15:29:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:29:22,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:22,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:29:22,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:29:22,383 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:29:22,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2125750765, now seen corresponding path program 1 times [2024-11-13 15:29:22,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:29:22,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960290554] [2024-11-13 15:29:22,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:22,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:29:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:29:22,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:29:22,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960290554] [2024-11-13 15:29:22,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960290554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:22,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:22,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:29:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669409990] [2024-11-13 15:29:22,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:22,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:29:22,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:29:22,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:29:22,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:29:22,698 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 15:29:27,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:27,702 INFO L93 Difference]: Finished difference Result 4514 states and 8438 transitions. [2024-11-13 15:29:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:29:27,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-13 15:29:27,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:27,717 INFO L225 Difference]: With dead ends: 4514 [2024-11-13 15:29:27,717 INFO L226 Difference]: Without dead ends: 3010 [2024-11-13 15:29:27,720 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 15:29:27,721 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:27,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-13 15:29:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2024-11-13 15:29:27,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2024-11-13 15:29:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states 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 15:29:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions. [2024-11-13 15:29:27,818 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 103 [2024-11-13 15:29:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:27,818 INFO L471 AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions. [2024-11-13 15:29:27,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 15:29:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions. [2024-11-13 15:29:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 15:29:27,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:27,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:29:27,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:29:27,826 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:29:27,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash -169082705, now seen corresponding path program 1 times [2024-11-13 15:29:27,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:29:27,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52245579] [2024-11-13 15:29:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:27,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:29:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:28,450 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:29:28,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:29:28,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52245579] [2024-11-13 15:29:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52245579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:29:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983805830] [2024-11-13 15:29:28,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:28,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:29:28,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:29:28,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:29:28,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:29:28,458 INFO L87 Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 15:29:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:35,401 INFO L93 Difference]: Finished difference Result 8267 states and 13429 transitions. [2024-11-13 15:29:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:29:35,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2024-11-13 15:29:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:35,424 INFO L225 Difference]: With dead ends: 8267 [2024-11-13 15:29:35,424 INFO L226 Difference]: Without dead ends: 5261 [2024-11-13 15:29:35,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:29:35,429 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:35,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 15:29:35,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2024-11-13 15:29:35,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2024-11-13 15:29:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states 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 15:29:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions. [2024-11-13 15:29:35,620 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 116 [2024-11-13 15:29:35,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:35,621 INFO L471 AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions. [2024-11-13 15:29:35,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 15:29:35,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions. [2024-11-13 15:29:35,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-13 15:29:35,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:35,624 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 15:29:35,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:29:35,625 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:29:35,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1290774569, now seen corresponding path program 1 times [2024-11-13 15:29:35,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:29:35,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337157756] [2024-11-13 15:29:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:35,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:29:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 15:29:36,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:29:36,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337157756] [2024-11-13 15:29:36,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337157756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:29:36,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190704690] [2024-11-13 15:29:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:36,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:36,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:36,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:36,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:29:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:36,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:29:36,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 15:29:36,754 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:29:36,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190704690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:36,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:29:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-13 15:29:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758547524] [2024-11-13 15:29:36,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:36,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:29:36,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:29:36,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:29:36,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:29:36,758 INFO L87 Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:29:40,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:40,794 INFO L93 Difference]: Finished difference Result 14275 states and 22313 transitions. [2024-11-13 15:29:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:29:40,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2024-11-13 15:29:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:40,823 INFO L225 Difference]: With dead ends: 14275 [2024-11-13 15:29:40,824 INFO L226 Difference]: Without dead ends: 9767 [2024-11-13 15:29:40,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:29:40,831 INFO L432 NwaCegarLoop]: 659 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:40,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 666 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-13 15:29:40,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2024-11-13 15:29:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2024-11-13 15:29:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3878763055498669) internal successors, (13554), 9766 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states 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 15:29:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13554 transitions. [2024-11-13 15:29:41,073 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13554 transitions. Word has length 171 [2024-11-13 15:29:41,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:41,074 INFO L471 AbstractCegarLoop]: Abstraction has 9767 states and 13554 transitions. [2024-11-13 15:29:41,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:29:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13554 transitions. [2024-11-13 15:29:41,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-13 15:29:41,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:41,080 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 15:29:41,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:29:41,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:41,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:29:41,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1359806717, now seen corresponding path program 1 times [2024-11-13 15:29:41,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:29:41,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741281030] [2024-11-13 15:29:41,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:41,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:29:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:29:41,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:29:41,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741281030] [2024-11-13 15:29:41,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741281030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:41,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:41,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:29:41,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840983449] [2024-11-13 15:29:41,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:41,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:29:41,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:29:41,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:29:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:29:41,732 INFO L87 Difference]: Start difference. First operand 9767 states and 13554 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 15:29:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:46,712 INFO L93 Difference]: Finished difference Result 23324 states and 32177 transitions. [2024-11-13 15:29:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:29:46,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2024-11-13 15:29:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:46,756 INFO L225 Difference]: With dead ends: 23324 [2024-11-13 15:29:46,756 INFO L226 Difference]: Without dead ends: 14273 [2024-11-13 15:29:46,766 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 15:29:46,767 INFO L432 NwaCegarLoop]: 694 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:46,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 708 Invalid, 3500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-13 15:29:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14273 states. [2024-11-13 15:29:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 14273. [2024-11-13 15:29:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.2779568385650224) internal successors, (18239), 14272 states have internal predecessors, (18239), 0 states have call successors, (0), 0 states 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 15:29:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18239 transitions. [2024-11-13 15:29:47,139 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 18239 transitions. Word has length 187 [2024-11-13 15:29:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:47,139 INFO L471 AbstractCegarLoop]: Abstraction has 14273 states and 18239 transitions. [2024-11-13 15:29:47,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 15:29:47,140 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 18239 transitions. [2024-11-13 15:29:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-13 15:29:47,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:47,145 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 15:29:47,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:29:47,145 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:29:47,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1422843932, now seen corresponding path program 1 times [2024-11-13 15:29:47,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:29:47,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811114925] [2024-11-13 15:29:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:29:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-13 15:29:47,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:29:47,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811114925] [2024-11-13 15:29:47,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811114925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:47,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:47,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:29:47,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917512850] [2024-11-13 15:29:47,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:47,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:29:47,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:29:47,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:29:47,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:29:47,536 INFO L87 Difference]: Start difference. First operand 14273 states and 18239 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 15:29:51,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:51,958 INFO L93 Difference]: Finished difference Result 39058 states and 50794 transitions. [2024-11-13 15:29:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:29:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 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 261 [2024-11-13 15:29:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:52,019 INFO L225 Difference]: With dead ends: 39058 [2024-11-13 15:29:52,019 INFO L226 Difference]: Without dead ends: 25538 [2024-11-13 15:29:52,032 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 15:29:52,033 INFO L432 NwaCegarLoop]: 1283 mSDtfsCounter, 736 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:52,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1291 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 15:29:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-13 15:29:52,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 25538. [2024-11-13 15:29:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25538 states, 25537 states have (on average 1.2637741316521127) internal successors, (32273), 25537 states have internal predecessors, (32273), 0 states have call successors, (0), 0 states 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 15:29:52,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25538 states to 25538 states and 32273 transitions. [2024-11-13 15:29:52,643 INFO L78 Accepts]: Start accepts. Automaton has 25538 states and 32273 transitions. Word has length 261 [2024-11-13 15:29:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:52,647 INFO L471 AbstractCegarLoop]: Abstraction has 25538 states and 32273 transitions. [2024-11-13 15:29:52,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 15:29:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 25538 states and 32273 transitions. [2024-11-13 15:29:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-13 15:29:52,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:52,670 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:29:52,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:29:52,671 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:29:52,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2050343277, now seen corresponding path program 1 times [2024-11-13 15:29:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:29:52,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292771952] [2024-11-13 15:29:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:52,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:29:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-13 15:29:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:29:53,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292771952] [2024-11-13 15:29:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292771952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:53,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:53,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:29:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046881043] [2024-11-13 15:29:53,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:53,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:29:53,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:29:53,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:29:53,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:29:53,400 INFO L87 Difference]: Start difference. First operand 25538 states and 32273 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 15:29:57,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:57,479 INFO L93 Difference]: Finished difference Result 50323 states and 63788 transitions. [2024-11-13 15:29:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:29:57,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 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 319 [2024-11-13 15:29:57,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:57,548 INFO L225 Difference]: With dead ends: 50323 [2024-11-13 15:29:57,549 INFO L226 Difference]: Without dead ends: 25538 [2024-11-13 15:29:57,568 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 15:29:57,569 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 690 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:57,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 427 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 15:29:57,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25538 states. [2024-11-13 15:29:58,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25538 to 21783. [2024-11-13 15:29:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21783 states, 21782 states have (on average 1.1813883022679277) internal successors, (25733), 21782 states have internal predecessors, (25733), 0 states have call successors, (0), 0 states 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 15:29:58,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 25733 transitions. [2024-11-13 15:29:58,081 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 25733 transitions. Word has length 319 [2024-11-13 15:29:58,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:58,083 INFO L471 AbstractCegarLoop]: Abstraction has 21783 states and 25733 transitions. [2024-11-13 15:29:58,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 15:29:58,084 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 25733 transitions. [2024-11-13 15:29:58,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-11-13 15:29:58,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:58,099 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:29:58,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:29:58,100 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:29:58,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:58,101 INFO L85 PathProgramCache]: Analyzing trace with hash 61266638, now seen corresponding path program 1 times [2024-11-13 15:29:58,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:29:58,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115007268] [2024-11-13 15:29:58,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:58,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:29:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 124 proven. 230 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 15:29:59,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:29:59,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115007268] [2024-11-13 15:29:59,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115007268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:29:59,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752635991] [2024-11-13 15:29:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:59,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:59,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:59,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:59,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:29:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:59,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:29:59,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:59,803 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-13 15:29:59,807 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:29:59,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752635991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:59,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:29:59,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 15:29:59,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718445771] [2024-11-13 15:29:59,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:59,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:29:59,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:29:59,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:29:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:29:59,809 INFO L87 Difference]: Start difference. First operand 21783 states and 25733 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 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 15:30:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:04,516 INFO L93 Difference]: Finished difference Result 58584 states and 70114 transitions. [2024-11-13 15:30:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:04,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 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 409 [2024-11-13 15:30:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:04,570 INFO L225 Difference]: With dead ends: 58584 [2024-11-13 15:30:04,571 INFO L226 Difference]: Without dead ends: 37554 [2024-11-13 15:30:04,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:30:04,591 INFO L432 NwaCegarLoop]: 937 mSDtfsCounter, 670 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:04,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 944 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2295 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-13 15:30:04,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2024-11-13 15:30:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 37554. [2024-11-13 15:30:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37554 states, 37553 states have (on average 1.1895454424413496) internal successors, (44671), 37553 states have internal predecessors, (44671), 0 states have call successors, (0), 0 states 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 15:30:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37554 states to 37554 states and 44671 transitions. [2024-11-13 15:30:05,556 INFO L78 Accepts]: Start accepts. Automaton has 37554 states and 44671 transitions. Word has length 409 [2024-11-13 15:30:05,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:05,561 INFO L471 AbstractCegarLoop]: Abstraction has 37554 states and 44671 transitions. [2024-11-13 15:30:05,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 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 15:30:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 37554 states and 44671 transitions. [2024-11-13 15:30:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-13 15:30:05,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:05,587 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, 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, 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] [2024-11-13 15:30:05,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:30:05,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:05,789 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:30:05,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:05,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1229741154, now seen corresponding path program 1 times [2024-11-13 15:30:05,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:30:05,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328633823] [2024-11-13 15:30:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:05,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:30:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 15:30:06,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:30:06,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328633823] [2024-11-13 15:30:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328633823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:06,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:06,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:06,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304494803] [2024-11-13 15:30:06,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:06,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:06,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:30:06,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:06,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:06,380 INFO L87 Difference]: Start difference. First operand 37554 states and 44671 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 15:30:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:10,772 INFO L93 Difference]: Finished difference Result 95383 states and 114715 transitions. [2024-11-13 15:30:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:10,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 410 [2024-11-13 15:30:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:10,856 INFO L225 Difference]: With dead ends: 95383 [2024-11-13 15:30:10,856 INFO L226 Difference]: Without dead ends: 58582 [2024-11-13 15:30:10,888 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 15:30:10,889 INFO L432 NwaCegarLoop]: 1219 mSDtfsCounter, 703 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:10,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1227 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-13 15:30:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58582 states. [2024-11-13 15:30:11,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58582 to 57080. [2024-11-13 15:30:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57080 states, 57079 states have (on average 1.1586397799540986) internal successors, (66134), 57079 states have internal predecessors, (66134), 0 states have call successors, (0), 0 states 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 15:30:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57080 states to 57080 states and 66134 transitions. [2024-11-13 15:30:11,943 INFO L78 Accepts]: Start accepts. Automaton has 57080 states and 66134 transitions. Word has length 410 [2024-11-13 15:30:11,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:11,944 INFO L471 AbstractCegarLoop]: Abstraction has 57080 states and 66134 transitions. [2024-11-13 15:30:11,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 15:30:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 57080 states and 66134 transitions. [2024-11-13 15:30:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2024-11-13 15:30:11,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:11,954 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, 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:11,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:30:11,955 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:30:11,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash -132166078, now seen corresponding path program 1 times [2024-11-13 15:30:11,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:30:11,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404134155] [2024-11-13 15:30:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:11,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:30:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-13 15:30:12,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:30:12,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404134155] [2024-11-13 15:30:12,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404134155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:12,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:12,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:12,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361098945] [2024-11-13 15:30:12,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:12,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:12,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:30:12,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:12,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:12,628 INFO L87 Difference]: Start difference. First operand 57080 states and 66134 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 15:30:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:17,662 INFO L93 Difference]: Finished difference Result 149455 states and 174891 transitions. [2024-11-13 15:30:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:17,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 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 416 [2024-11-13 15:30:17,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:17,783 INFO L225 Difference]: With dead ends: 149455 [2024-11-13 15:30:17,784 INFO L226 Difference]: Without dead ends: 93128 [2024-11-13 15:30:17,823 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 15:30:17,823 INFO L432 NwaCegarLoop]: 528 mSDtfsCounter, 709 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:17,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 534 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 15:30:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93128 states. [2024-11-13 15:30:18,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93128 to 87120. [2024-11-13 15:30:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87120 states, 87119 states have (on average 1.1410714080740136) internal successors, (99409), 87119 states have internal predecessors, (99409), 0 states have call successors, (0), 0 states 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 15:30:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87120 states to 87120 states and 99409 transitions. [2024-11-13 15:30:19,052 INFO L78 Accepts]: Start accepts. Automaton has 87120 states and 99409 transitions. Word has length 416 [2024-11-13 15:30:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:19,053 INFO L471 AbstractCegarLoop]: Abstraction has 87120 states and 99409 transitions. [2024-11-13 15:30:19,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 15:30:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 87120 states and 99409 transitions. [2024-11-13 15:30:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-13 15:30:19,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:19,064 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:19,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:30:19,065 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:30:19,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:19,065 INFO L85 PathProgramCache]: Analyzing trace with hash -958980483, now seen corresponding path program 1 times [2024-11-13 15:30:19,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:30:19,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795613074] [2024-11-13 15:30:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:19,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:30:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-13 15:30:19,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:30:19,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795613074] [2024-11-13 15:30:19,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795613074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:19,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:19,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:19,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289853531] [2024-11-13 15:30:19,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:19,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:30:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:19,953 INFO L87 Difference]: Start difference. First operand 87120 states and 99409 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 15:30:24,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:24,087 INFO L93 Difference]: Finished difference Result 177242 states and 201913 transitions. [2024-11-13 15:30:24,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:24,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 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 418 [2024-11-13 15:30:24,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:24,170 INFO L225 Difference]: With dead ends: 177242 [2024-11-13 15:30:24,170 INFO L226 Difference]: Without dead ends: 90875 [2024-11-13 15:30:24,201 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 15:30:24,202 INFO L432 NwaCegarLoop]: 993 mSDtfsCounter, 761 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:24,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1000 Invalid, 2637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-13 15:30:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90875 states. [2024-11-13 15:30:25,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90875 to 81863. [2024-11-13 15:30:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81863 states, 81862 states have (on average 1.108182062495419) internal successors, (90718), 81862 states have internal predecessors, (90718), 0 states have call successors, (0), 0 states 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 15:30:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81863 states to 81863 states and 90718 transitions. [2024-11-13 15:30:25,406 INFO L78 Accepts]: Start accepts. Automaton has 81863 states and 90718 transitions. Word has length 418 [2024-11-13 15:30:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:25,407 INFO L471 AbstractCegarLoop]: Abstraction has 81863 states and 90718 transitions. [2024-11-13 15:30:25,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 15:30:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 81863 states and 90718 transitions. [2024-11-13 15:30:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-13 15:30:25,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:25,416 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 15:30:25,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:30:25,416 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:30:25,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:25,417 INFO L85 PathProgramCache]: Analyzing trace with hash -142196206, now seen corresponding path program 1 times [2024-11-13 15:30:25,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:30:25,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967804009] [2024-11-13 15:30:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:25,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:30:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2024-11-13 15:30:25,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:30:25,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967804009] [2024-11-13 15:30:25,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967804009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:25,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:25,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:25,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543786893] [2024-11-13 15:30:25,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:25,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:25,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:30:25,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:25,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:25,707 INFO L87 Difference]: Start difference. First operand 81863 states and 90718 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:30,064 INFO L93 Difference]: Finished difference Result 181748 states and 201973 transitions. [2024-11-13 15:30:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:30,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 442 [2024-11-13 15:30:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:30,235 INFO L225 Difference]: With dead ends: 181748 [2024-11-13 15:30:30,236 INFO L226 Difference]: Without dead ends: 100638 [2024-11-13 15:30:30,269 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 15:30:30,270 INFO L432 NwaCegarLoop]: 1109 mSDtfsCounter, 844 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:30,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1117 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-13 15:30:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100638 states. [2024-11-13 15:30:31,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100638 to 96883. [2024-11-13 15:30:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96883 states, 96882 states have (on average 1.097758097479408) internal successors, (106353), 96882 states have internal predecessors, (106353), 0 states have call successors, (0), 0 states 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 15:30:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96883 states to 96883 states and 106353 transitions. [2024-11-13 15:30:31,613 INFO L78 Accepts]: Start accepts. Automaton has 96883 states and 106353 transitions. Word has length 442 [2024-11-13 15:30:31,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:31,614 INFO L471 AbstractCegarLoop]: Abstraction has 96883 states and 106353 transitions. [2024-11-13 15:30:31,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:30:31,614 INFO L276 IsEmpty]: Start isEmpty. Operand 96883 states and 106353 transitions. [2024-11-13 15:30:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-13 15:30:31,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:31,624 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:30:31,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:30:31,624 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:30:31,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash 594729363, now seen corresponding path program 1 times [2024-11-13 15:30:31,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:30:31,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913742205] [2024-11-13 15:30:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:31,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:30:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 15:30:32,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:30:32,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913742205] [2024-11-13 15:30:32,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913742205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:32,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:32,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:32,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884548470] [2024-11-13 15:30:32,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:32,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:32,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:30:32,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:32,819 INFO L87 Difference]: Start difference. First operand 96883 states and 106353 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 15:30:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:36,663 INFO L93 Difference]: Finished difference Result 207282 states and 227112 transitions. [2024-11-13 15:30:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:36,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 480 [2024-11-13 15:30:36,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:36,771 INFO L225 Difference]: With dead ends: 207282 [2024-11-13 15:30:36,771 INFO L226 Difference]: Without dead ends: 111152 [2024-11-13 15:30:36,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:36,816 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 733 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:36,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 937 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-13 15:30:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111152 states. [2024-11-13 15:30:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111152 to 102140. [2024-11-13 15:30:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102140 states, 102139 states have (on average 1.0943028617863892) internal successors, (111771), 102139 states have internal predecessors, (111771), 0 states have call successors, (0), 0 states 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 15:30:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102140 states to 102140 states and 111771 transitions. [2024-11-13 15:30:38,370 INFO L78 Accepts]: Start accepts. Automaton has 102140 states and 111771 transitions. Word has length 480 [2024-11-13 15:30:38,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:38,370 INFO L471 AbstractCegarLoop]: Abstraction has 102140 states and 111771 transitions. [2024-11-13 15:30:38,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 15:30:38,371 INFO L276 IsEmpty]: Start isEmpty. Operand 102140 states and 111771 transitions. [2024-11-13 15:30:38,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2024-11-13 15:30:38,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:38,383 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, 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, 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, 2, 2, 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] [2024-11-13 15:30:38,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:30:38,384 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:30:38,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:38,384 INFO L85 PathProgramCache]: Analyzing trace with hash -494975708, now seen corresponding path program 1 times [2024-11-13 15:30:38,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:30:38,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842482810] [2024-11-13 15:30:38,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:38,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:30:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-13 15:30:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:30:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842482810] [2024-11-13 15:30:38,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842482810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:38,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:38,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:38,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701632771] [2024-11-13 15:30:38,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:38,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:38,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:30:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:38,927 INFO L87 Difference]: Start difference. First operand 102140 states and 111771 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 15:30:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:43,965 INFO L93 Difference]: Finished difference Result 232816 states and 255659 transitions. [2024-11-13 15:30:43,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:43,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 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 15:30:43,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:44,138 INFO L225 Difference]: With dead ends: 232816 [2024-11-13 15:30:44,138 INFO L226 Difference]: Without dead ends: 131429 [2024-11-13 15:30:44,606 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 15:30:44,607 INFO L432 NwaCegarLoop]: 1223 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:44,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1231 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 15:30:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131429 states. [2024-11-13 15:30:45,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131429 to 127674. [2024-11-13 15:30:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127674 states, 127673 states have (on average 1.0866353888449398) internal successors, (138734), 127673 states have internal predecessors, (138734), 0 states have call successors, (0), 0 states 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 15:30:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127674 states to 127674 states and 138734 transitions. [2024-11-13 15:30:46,076 INFO L78 Accepts]: Start accepts. Automaton has 127674 states and 138734 transitions. Word has length 567 [2024-11-13 15:30:46,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:46,076 INFO L471 AbstractCegarLoop]: Abstraction has 127674 states and 138734 transitions. [2024-11-13 15:30:46,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 15:30:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand 127674 states and 138734 transitions. [2024-11-13 15:30:46,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2024-11-13 15:30:46,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:46,138 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:30:46,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:30:46,138 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:30:46,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:46,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1420696779, now seen corresponding path program 1 times [2024-11-13 15:30:46,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:30:46,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79951573] [2024-11-13 15:30:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:46,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:30:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 528 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-13 15:30:49,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:30:49,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79951573] [2024-11-13 15:30:49,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79951573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:49,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:49,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:30:49,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736976671] [2024-11-13 15:30:49,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:49,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:30:49,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:30:49,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:30:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:30:49,200 INFO L87 Difference]: Start difference. First operand 127674 states and 138734 transitions. Second operand has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 0 states have call successors, (0), 0 states 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 15:31:01,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:01,479 INFO L93 Difference]: Finished difference Result 343409 states and 372520 transitions. [2024-11-13 15:31:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:31:01,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 0 states have call successors, (0), 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 1035 [2024-11-13 15:31:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:01,789 INFO L225 Difference]: With dead ends: 343409 [2024-11-13 15:31:01,789 INFO L226 Difference]: Without dead ends: 214980 [2024-11-13 15:31:01,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:31:01,837 INFO L432 NwaCegarLoop]: 607 mSDtfsCounter, 1946 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 8407 mSolverCounterSat, 2909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 11316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2909 IncrementalHoareTripleChecker+Valid, 8407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:01,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 652 Invalid, 11316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2909 Valid, 8407 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2024-11-13 15:31:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214980 states. [2024-11-13 15:31:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214980 to 129176. [2024-11-13 15:31:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129176 states, 129175 states have (on average 1.0849390361912135) internal successors, (140147), 129175 states have internal predecessors, (140147), 0 states have call successors, (0), 0 states 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 15:31:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129176 states to 129176 states and 140147 transitions. [2024-11-13 15:31:04,301 INFO L78 Accepts]: Start accepts. Automaton has 129176 states and 140147 transitions. Word has length 1035 [2024-11-13 15:31:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:04,302 INFO L471 AbstractCegarLoop]: Abstraction has 129176 states and 140147 transitions. [2024-11-13 15:31:04,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 0 states have call successors, (0), 0 states 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 15:31:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 129176 states and 140147 transitions. [2024-11-13 15:31:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2024-11-13 15:31:04,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:04,377 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, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:04,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 15:31:04,378 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:31:04,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:04,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1489213549, now seen corresponding path program 1 times [2024-11-13 15:31:04,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:31:04,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197721529] [2024-11-13 15:31:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:04,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:31:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 453 proven. 125 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-13 15:31:09,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:31:09,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197721529] [2024-11-13 15:31:09,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197721529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:31:09,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307213055] [2024-11-13 15:31:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:09,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:09,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:09,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:09,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:31:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:09,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:31:09,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 509 proven. 69 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-13 15:31:11,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:31:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 15:31:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307213055] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 15:31:12,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:31:12,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 4] total 11 [2024-11-13 15:31:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131375616] [2024-11-13 15:31:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:12,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:31:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:31:12,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:31:12,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:31:12,665 INFO L87 Difference]: Start difference. First operand 129176 states and 140147 transitions. Second operand has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 0 states 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 15:31:17,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:17,497 INFO L93 Difference]: Finished difference Result 285386 states and 310501 transitions. [2024-11-13 15:31:17,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:31:17,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 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 1043 [2024-11-13 15:31:17,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:17,682 INFO L225 Difference]: With dead ends: 285386 [2024-11-13 15:31:17,682 INFO L226 Difference]: Without dead ends: 156963 [2024-11-13 15:31:17,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2092 GetRequests, 2083 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:31:17,753 INFO L432 NwaCegarLoop]: 1287 mSDtfsCounter, 87 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:17,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1295 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-13 15:31:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156963 states. [2024-11-13 15:31:19,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156963 to 144947. [2024-11-13 15:31:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144947 states, 144946 states have (on average 1.0791191202240835) internal successors, (156414), 144946 states have internal predecessors, (156414), 0 states have call successors, (0), 0 states 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 15:31:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144947 states to 144947 states and 156414 transitions. [2024-11-13 15:31:19,480 INFO L78 Accepts]: Start accepts. Automaton has 144947 states and 156414 transitions. Word has length 1043 [2024-11-13 15:31:19,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:19,481 INFO L471 AbstractCegarLoop]: Abstraction has 144947 states and 156414 transitions. [2024-11-13 15:31:19,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 0 states 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 15:31:19,481 INFO L276 IsEmpty]: Start isEmpty. Operand 144947 states and 156414 transitions. [2024-11-13 15:31:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2024-11-13 15:31:19,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:19,600 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, 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, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:19,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:31:19,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e566cc0f-c08c-47dc-b864-da5bdfdcabf1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:31:19,804 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:31:19,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:19,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1404750873, now seen corresponding path program 1 times [2024-11-13 15:31:19,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:31:19,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584614522] [2024-11-13 15:31:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:31:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1239 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2024-11-13 15:31:21,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:31:21,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584614522] [2024-11-13 15:31:21,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584614522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:21,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:21,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:31:21,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250197656] [2024-11-13 15:31:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:21,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:31:21,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:31:21,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:31:21,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:31:21,491 INFO L87 Difference]: Start difference. First operand 144947 states and 156414 transitions. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 15:31:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:25,263 INFO L93 Difference]: Finished difference Result 292145 states and 315095 transitions. [2024-11-13 15:31:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:31:25,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 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 1114 [2024-11-13 15:31:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:25,422 INFO L225 Difference]: With dead ends: 292145 [2024-11-13 15:31:25,422 INFO L226 Difference]: Without dead ends: 144947 [2024-11-13 15:31:25,739 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 15:31:25,739 INFO L432 NwaCegarLoop]: 1221 mSDtfsCounter, 232 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:25,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1228 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 15:31:25,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144947 states. [2024-11-13 15:31:27,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144947 to 130678. [2024-11-13 15:31:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130678 states, 130677 states have (on average 1.0615257466883996) internal successors, (138717), 130677 states have internal predecessors, (138717), 0 states have call successors, (0), 0 states 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 15:31:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130678 states to 130678 states and 138717 transitions. [2024-11-13 15:31:27,296 INFO L78 Accepts]: Start accepts. Automaton has 130678 states and 138717 transitions. Word has length 1114 [2024-11-13 15:31:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:27,297 INFO L471 AbstractCegarLoop]: Abstraction has 130678 states and 138717 transitions. [2024-11-13 15:31:27,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 15:31:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 130678 states and 138717 transitions. [2024-11-13 15:31:27,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1204 [2024-11-13 15:31:27,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:27,359 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:31:27,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 15:31:27,359 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:31:27,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash 912628409, now seen corresponding path program 1 times [2024-11-13 15:31:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:31:27,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902312098] [2024-11-13 15:31:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:27,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:31:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1212 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-13 15:31:28,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:31:28,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902312098] [2024-11-13 15:31:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902312098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:28,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:28,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:31:28,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893178687] [2024-11-13 15:31:28,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:28,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:31:28,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:31:28,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:31:28,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:31:28,610 INFO L87 Difference]: Start difference. First operand 130678 states and 138717 transitions. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 15:31:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:32,840 INFO L93 Difference]: Finished difference Result 287639 states and 304763 transitions. [2024-11-13 15:31:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:31:32,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 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 1203 [2024-11-13 15:31:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:32,983 INFO L225 Difference]: With dead ends: 287639 [2024-11-13 15:31:32,983 INFO L226 Difference]: Without dead ends: 157714 [2024-11-13 15:31:33,041 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 15:31:33,041 INFO L432 NwaCegarLoop]: 1142 mSDtfsCounter, 88 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:33,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1149 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-13 15:31:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157714 states.